Cek saldo emoney · Hendri Budi Setiawan

Indonesians can finally check their transit card balance on iPhone: a post with 410k views, and a name that got the keyword right

What it is A free iPhone app that reads the balance of Indonesian bank prepaid cards (e-Money, Flazz, Brizzi, TapCash, JakCard) when you hold them to the back of the phone. No login required.

Why it took off For years, iPhone users checking balances had to log into a bank app or go to an ATM. It was the first in its category to officially launch. The developer's video post on Threads that day got 410k views, and the app name matched the phrase people were searching word for word.

CHow you could follow it Don't build another balance-checker in Indonesia. Take the same playbook to a market where the official app is missing (check Touch 'n Go, EZ-Link, T-money, etc. first), or build a paid upgrade in Indonesia with expense receipts, Shortcuts support, and per-transaction history.

Grade C: the playbook is clear and the development effort is small, so it's worth learning from. But this niche has already crowded to five or six players in two months, the paying one has taken the lead, and the original app itself has no revenue. Whether it works in another market depends on whether local official apps have a gap, which is not yet verified. Being talked about in small circles

Data (updated daily) · First seen 2026-08-17 · Indonesia rating 737 · Charted in 11-08 of 1 stores: iOS · best category chart rank · by store
Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Lower rank is higher; gaps mean it wasn't charted that day
iOS · Ratings count · Indonesia
Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Apple doesn't publish download counts; rating growth is a proxy for downloads.

Cek saldo emoney is a free iPhone utility: hold Indonesian bank prepaid cards to the back of your phone and the balance shows up. It launched in Aug 17, hit the charts on the day of a Threads post, and kept getting installs because "the name is the search term." The product itself has nothing exclusive. In the same week at least three other Indonesian developers shipped the same kind of app, and the one actually taking in money is a different one. What's worth learning is the playbook, and the niche is already crowded.

A post saying "just launched, still fresh"

On 2026 Aug 17 at 5:42 pm, Indonesian developer Naufal Rusada (@naufal_r97) posted a video on Threads with a single line: "Hallo warga threads baru rilis di appstore dan masih fresh aplikasi cek saldo emoney nihh" (Hi Threads folks, an app for checking e-money balances just launched on the App Store, it's still fresh).

By Nov 6 the post had 411k views, 2,800 likes, 496 replies, and 431 shares (Threads page, 11-06). In the comments he added that Apple hadn't indexed it yet, so people should download via the link, and added "may those who give five stars be blessed with fortune, aamiin."

The earliest batch of App Store reviews were all written in those first few days. On Aug 25 someone wrote "Dapet info dari threads" (found it on Threads). On Aug 19 another wrote: "No need to open the bank app or hunt around for a balance-check menu!"

What it is

An app that does just one thing: open it, hold the card to the back of your iPhone, and the balance appears in seconds. It supports Mandiri e-Money, BCA Flazz, BRI Brizzi, BNI TapCash, and JakCard. No login, no signup, no charge, no in-app purchases. One review from Sep 4 is titled "No ads." Checked balances are saved automatically, so you can track changes.

The first paragraph of the store page states the user pain point: "No more queuing at convenience stores or hunting for an ATM just to find out how much is left on your card."

Indonesia's toll roads, the KRL commuter train, and TransJakarta buses all run on these prepaid cards. Android apps that read card balances over NFC appeared around 2018 years ago. On iPhone, you either had to log into the matching bank's app (which only works with that bank's cards and asks for your PIN) or go to an ATM. "How to check e-money balance on iPhone" tutorials with millions of views have been circulating on TikTok for 2021–2023 years. The demand was always there. Nobody had turned it into a convenient tool.

How it took off

Three things stacked together:

Early to market. At least three Indonesian developers were building the same thing that week. Saldoku also posted on Threads in Aug 17, but on iOS it was still only on TestFlight. The CekSaldo developer teased it on Aug 16, and the official iOS version shipped in Sep 27. This one was the only one that week you could download straight from the App Store.
Its post drew the most traffic. Saldoku's post got 22.6k views, the CekSaldo developer's post 4,400, and this one 410k.
The name is the search term. The app is called "Cek saldo emoney," which matches the phrase Indonesians search word for word. After the Threads wave passed, it still gets 2–16 new ratings a day (App Store, 10-28 to 11-06). That volume can only come from store search (inferred, high confidence).

Timeline	Metric
Listed 08-17	Threads launch post, 411k views
08-17 → 10-28	665 ratings in total, about 9 per day on average
10-28 → 11-06	Added 64, about 6 per day. In Indonesia's Utilities free chart it slid from #56 to #89
11-06	731 ratings, average 4.88

Many ratings but few written reviews (only thirty-some on the store page), plus the developer openly asking for five stars, so a system rating prompt likely fired inside the app (inferred). Also, the developer listed on the store is Hendri Budi Setiawan, who has a string of apps launched in the past 2026 years, including Quran recognition, Bible chat, football prediction, and pottery identification. Naufal's own account has a dozen tool and religious apps too, in a very similar style. The two are most likely one small team publishing apps under multiple developer accounts (inferred, unverified).

It's slowly fading, not accelerating. The version is stuck at 1.0.1 from Aug 19, and in October the developer was still asking on Threads, "Haven't touched this app in a while, what should I update?"

What users still want

Nearly all reviews are five stars, but the requests cluster:

"Would be much better if it connected to Apple Shortcuts." (10-07)
"Add a button that jumps to the top-up app, it'd be easier." (09-21)
"Balance history should be per transaction, not per day, so you can see how much each trip cost." (08-31)
"KAI's Multi Trip card (Kartu Multi Trip) still can't be read." (08-19)
"Next, build top-ups!" (08-18)

Another kind of demand shows up in the Threads replies: receipts for company expense claims. Toll fees are something many office workers need to claim back, and that's the opening for paid features.

Who it's competing with

Product	Scale	Compared with alternatives
CekSaldo: e-Toll & e-Money	iOS has 34 ratings but is already #25 on Indonesia's Utilities Top Grossing chart. Android has 24k installs, 7 more in 8,263 days (Google Play, 11-06).	Launched on iOS in late September with more features: e-receipts from 8 toll-road operators, card transaction history, a community, and a Premium subscription. The developer's single TikTok video hit 1.26M views. The one actually making money in this niche.
Cetak Resi Transaksi E-Toll	338 ratings, free chart #127	Launched in March, supports more card types, and updates often. Its name is "Print receipts," so it doesn't capture the "check balance" search term.
Saldoku	Threads launch post, 22.6k views	Launched the same day. Official iOS release not verified.
Emoney Info: NFC Card Reader	13 ratings	Launched 4 months earlier with an English name and no promotion. It didn't take off.
TapCard: Cek Saldo E-Money	2 ratings	10-26 launched. Copy is nearly identical, classic copycat.
BNI Tapcash Go	837 ratings, average 2.09	Bank's official app, only accepts one card type. No updates since 2024 December.
Bank apps, DANA, Shopee and others	Top players	Requires login, mainly for top-ups, only works with its own cards

The short version: NFC card reading is public knowledge in the Android world, so anyone can build it. Its edge is distribution, not product. And on features, it has already been passed by CekSaldo and Cetak Resi.

If it were you

Bottom line: another balance-checker app in Indonesia is late. Five or six showed up in two months, and one is already charging. The part worth copying is the playbook: find local NFC needs that Android has had for years and iPhone never got, name the app with the exact words locals search, and post a real-person demo on the platforms locals use most on launch day.

Who it's for: indie devs who can write iOS, know Core NFC card-reading commands, and understand a particular Asian market's language and habits. Build scope is small, one or two weeks to ship.

Who it's not for: anyone expecting a free balance checker to earn money on its own. It doesn't. The money in this category sits in add-ons (expense-report receipts, transaction export), and someone has to keep up with card-type compatibility.

How to do it: two paths. One is to switch markets: Malaysia's Touch 'n Go, Singapore's EZ-Link, Taiwan's EasyCard and iPass, Korea's T-money, Hong Kong's Octopus. Before building, search the local App Store for the local names. Where the official app already reads cards on iPhone (EasyCard, Octopus), the space is small, so look for markets where the official side is missing. The other is to stay in Indonesia and do what users explicitly ask for: Shortcuts (tap card, balance pops up), per-transaction logs, KAI cards, one-tap top-up links, plus high-speed toll receipt export for expense reports, billed per use or per month. The second path goes head-to-head with CekSaldo, so it has to be clearly better.

How to get users: copy it. Name the app with the local search phrase. On launch day, post a real-person short video of "tap card, get balance" on the platforms that are hot locally (Threads and TikTok in Indonesia). Pitch phone shops and tutorial accounts on "it works on iPhone too." Inside the app, ask for a rating right after the first successful balance check, and aim for the first hundred ratings.

When is "before": if you switch markets, the earlier the better. Once someone owns the exact search terms in this category, latecomers struggle to break in. In Indonesia it went from the first app to a crowded field in a week to two months.

Signs you've misread this: ① the target market's official or wallet app already supports tap-to-check on iPhone, so there's no gap; ② a month after launch, organic search (not social posts) still brings in only a few ratings a day, meaning nobody in that market searches the store for this; ③ in Indonesia, CekSaldo's Top Grossing rank drops out of the top 100, meaning paid features like expense receipts can't carry revenue, and staying in Indonesia to build a paid version isn't worth it.

iOS store page ↗

Research notes: competitor table, acquisition evidence, full research report

Competitors

Name	Where	Launched	Scale	How it differs from this one
Bank apps such as Livin' by Mandiri, BRImo and myBCA	iOS	Years	Major bank apps	Only works with its own bank's cards, requires login and PIN, can update balance and top up. This one needs no login and reads multiple banks' cards, but it's read-only.
E-money features in DANA, Tokopedia, Shopee and Grab	iOS	Years	Super apps	Requires login, buried deep, mainly for top-ups. This one opens and scans right away.
iOS Shortcuts NFC automation	Big-company features	iOS 13 and up	Several TikTok tutorials with millions of views	Built into the system, but it can't read balances by itself
BNI Tapcash Go	iOS	2021-05	837 ratings, average 2.09	Made by the official side, only supports TapCash, poor reviews, no updates since 2024-12
Cetak Resi Transaksi E-Toll	iOS	2026-03-10	338 ratings, +7 in 15 days, #127 free in Utilities	Broader card-type support, shows transaction locations, updated often. The name suggests printing receipts rather than checking balances.
CekSaldo: e-Toll & e-Money(PT Hamanto Studio Aja)	iOS	iOS 2026-09-27;Android 2026-10-15	iOS: 34 ratings but already #25 in Utilities Top Grossing. Android: 24k installs, +8,263 in 7 days (googleplay library).	Has high-speed e-toll receipts, in-card records and a community, with a Premium subscription. Leans hard on TikTok (one video at 1.26M views). Already making money.
Saldoku — Cek Saldo e-Money(Yusril Rapsanjani)	iOS	2026-08-17 posts TestFlight	Launch Threads post: 22.6k views. Android already live.	Same product launched the same day, but iOS was only on TestFlight then. Current App Store status not verified.
Emoney Info: NFC Card Reader	iOS	2026-04-19	13 ratings	Built earlier, but English name and no promotion, so it didn't take off.
Android card-reading apps like eSaldo Info	Android	Starting around 2018	Each has a decent install base	Android has had this for years. iPhone has never had it.

Where users come from

Verified Threads launch video post: @naufal_r97 post from 2026-08-17: 411K views, 2.8K likes, 496 replies, 256 reposts, 431 shares
Inferred App Store search (ASO): name and bundle (com.ceksaldo.emoney) match the search phrase "cek saldo emoney" word for word. After the Threads wave passed, it still gained 3–16 new ratings a day.
Verified Public request for five stars / in-app rating prompt: the author wrote on Threads that people who give five stars will have good luck. 731 ratings but very few written reviews suggests an in-app rating prompt.
Inferred TikTok "iPhone can check e-money too" trend: iPhone shop accounts 27secondbysultan (300k views, 2026-11-03) and steknostore (40k views) cover this, but it can't be confirmed they used this app.

Research report: Cek saldo emoney (iOS 6801944056)

In one line: a free, no-login, no-IAP iPhone utility that reads balances off Indonesian bank prepaid cards (Mandiri e-Money, BCA Flazz, BRI Brizzi, BNI TapCash, JakCard and more) over NFC. It worked because on the day 2026-08-17 went live, author Naufal Rusada's video post on Threads got 411K views, catching a long-running need: iPhone users who want to check their e-money balance without logging into a stack of bank apps. The app name is the exact phrase people search for, and the steady volume comes from store search. There's nothing exclusive in the product itself, and at least 3 other Indonesian indie devs shipped the same app that same week. It took off because it launched early, got the name right, and rode one big post.

1. How to read the data card

Only charted in Indonesia. appstore library app_day (id region): ratings count 2026-10-28 is 665,11-06 is 729,10 days, adding 64, about 2–16 a day. Velocity over 7 days vs 50,30 days: 64 (rating_velocity_30d).
From launch (08-17) to 10-28 is 72 days, averaging about 9.2 ratings a day. Over the last 10 days it's about 6.4 a day. So the recall's "steady growth" is really a post-launch peak slowly fading, not acceleration.
Indonesia Utilities free chart: 10-28 #56 → 11-06 #89, falling steadily (appstore.app_day). Never charted overall.
Average rating 4.88 from 731 ratings (iTunes lookup, 2026-11-06), but the store page shows only about ten written reviews. Many ratings with few reviews usually means the system rating prompt fired inside the app. The author also wrote on Threads: "Yang ngasih bintang 5 rejekinya lancar semua, aamiin" (people who give five stars will have smooth fortune) [^t2].
Version is still 1.0.1 (2026-08-19), no updates since. The release note says only "now you can check JakCard balances." On Threads the author asked followers "what should I update, I haven't touched this app in ages" [^t1].
Monetization: free, no in-app purchases (iTunes lookup). One 9-05 review is titled "No ads" (fast, no ads) [^r]. The recall says it "collects ad data so it monetizes through ads." There's no evidence for this. As far as I can see, it has no revenue.

2. Who built it

The store developer is Hendri Budi Setiawan (developer id 1874514897, a newer account). Under it are also Quran identifier, Verora Bible chat, Soccer Predictions AI, Pottery identifier, TokCleaner and Crypto Trading Sim, all from the past 2026 years. They're testing many niches (appstore.app table).
The one actually promoting it is Threads user Naufal Rusada (@naufal_r97). His own developer account (id 1722210615) has a dozen utility and religious apps, like Doa dan Dzikir, Fiqih Wanita, Holy Bible and Prayer, Vaultify and Remage, with a style close to Hendri's account. So these two accounts are likely one small team publishing apps under several developer accounts (inferred, not verified). His Threads bio reads "Butuh aplikasi request saja saya buatin gratiss" (request any app and I'll build it for free).

3. Competitors

Competitors	Platform	Launched	Scale	How it differs
Livin' by Mandiri (and bank apps like BRImo and myBCA)	iOS/Android	Years	Major bank apps	Only works with its own bank's cards, requires login and PIN entry (Mandiri's official flow is "log in → e-money → view/update balance" [^m]). Can update balance and top up. This one needs no login and reads multiple banks' cards, but it's read-only and can't top up.
E-money features in DANA, Tokopedia, Shopee and Grab	iOS/Android	Years	Super apps	Requires login, buried deep, mainly for top-ups. This one opens and scans right away.
iOS Shortcuts NFC automation	System feature	iOS 13 and up	Lots of TikTok tutorials: trugs.time's 2023 video at 1.56M views, warunkgadget at 3.19M	Free, but it only launches other apps and can't read balances itself
BNI Tapcash Go	iOS	2021-05	837 ratings, average 2.09	Made by the official side, only supports TapCash, poor reviews, no updates since 2024-12
Cetak Resi Transaksi E-Toll(PT Metalarc)	iOS	2026-03-10	338 ratings, +7 in 15 days, #127 free in Utilities	Broader card-type support (new and old applets, Flazz Gen1/2), shows transaction locations, updated often (4.5.x). The name suggests "printing receipts," not "checking balances."
CekSaldo: e-Toll & e-Money(PT Hamanto Studio Aja,@robihamanto)	iOS + Android	iOS 2026-09-27 (app id lower than this one, developer 08-16 already teased it on Threads). Android 2026-10-15.	iOS has only 34 ratings but is already #25 in the Utilities Top Grossing chart. Android: 24k installs, +8,263 in 7 days (googleplay library).	More features: high-speed e-toll receipts from 8 toll operators, in-card records, streak tracking, a community, and a Premium subscription. Very heavy on TikTok (1.26M and 610k views). It's a rival that launched at the same time, and it's already earning.
Saldoku — Cek Saldo e-Money(Yusril Rapsanjani)	iOS(TestFlight)/Android	2026-08-17 posts TestFlight on Threads	That post: 22.6k views, 299 likes [^s]	Same-day launch of the same product, but iOS only had TestFlight at the time; our database has no official iOS version (unverified)
Emoney Info: NFC Card Reader	iOS	2026-04-19	13 ratings, average 3.85	Launched 4 months earlier under an English name with no promotion, and it never took off
Android card-reader apps (eSaldo Info and others)	Android	Starting around 2018	Each has a decent install base	Android has had these for years; iPhone has been missing one all along

Verdict: Reading Indonesian e-money cards over NFC on iPhone has been technically doable for a while. BNI Tapcash Go has done it for 2021 years, and Emoney Info for 2026-04. What nobody has done is turn it into a hit: a multi-card, no-login app with a localized name. In mid-2026-08, at least 3 Indonesian indie developers pushed apps of this type in the same week, and the race was over who listed first and got seen first.

4. Growth tactics (evidence)

Threads launch post (confirmed, main driver): @naufal_r posted a video on 97 2026-08-17 17:42: "Hallo warga threads baru rilis di appstore dan masih fresh aplikasi cek saldo emoney nihh". It got 411K views, 2.8K likes, 496 replies, 256 reposts and 431 shares [^t3]. The same day he added a comment: "Just listed, Apple hasn't indexed it yet, so use the link for now", and asked people to leave five stars [^t2]. That night he posted thanks to "everyone who reposted this balance-check app" (seen through quote posts from others). The same week Threads also had similar posts for Saldoku (22.6K views) and robihamanto (4.4K). This creator's post drew the most traffic of them all.
Store search / ASO (inferred, strong evidence): The app name "Cek saldo emoney" and bundle id com.ceksaldo.emoney match the exact search terms users type. A Jina search for "cek saldo emoney iPhone" ranks its store page first. After the Threads wave passed, it still gets 3–16 new ratings a day, and that organic volume can only come from search. Competitors in this iOS category are few and none has taken off, so an exact-match name can hold a top spot for a long time.
TikTok buzz around "e-money works on iPhone too" (inferred): From 9 2026 to November, a batch of iPhone shops and tutorial accounts talked about checking balances on iPhone via NFC (secondbysultan's video had 27k plays, steknostore's 9-26 2026-11-03 300 40k plays). I couldn't confirm which app they used. The biggest TikTok account was robihamanto, the creator behind rival CekSaldo. This content taught users that the task was possible, and when they searched the App Store, they often landed on this app.
In-app rating prompts + public requests for five stars (confirmed/inferred): Public five-star requests on Threads are confirmed. Whether the app shows a rating prompt is inferred, based on how few written reviews come with the ratings (731).
No evidence of paid acquisition, media or celebrity promotion: x-radar finds nothing in the last 90 days. Indozone's roundup of "7 e-money balance apps" lists Saldoku, E-Chis, BNI TapCash Go and several bank apps, and doesn't mention it [^i].

5. Why it charted

The demand has been there all along: Indonesian toll roads, KRL and TransJakarta all use prepaid cards, and checking a balance means going to an ATM or convenience store, or logging into several bank apps. "How to check e-money on iPhone" has had several million-view tutorials on TikTok over the past 2021–2023 years, so people have wanted this for a long time. iOS just never had a smooth tool for it.
Launch timing and the big-account post: It went live on the App Store the same day as 08-17 (Saldoku was still on TestFlight then, and CekSaldo only listed at the end of September). The Threads post drew 410k views, which gave it its first few hundred ratings. Those ratings then helped it rank higher in store search.
The name is the search term: Its ongoing volume depends on people searching "cek saldo emoney".
Free, no login, reads multiple cards: Bank apps require login and only support their own cards. BNI's official app has a rating of 2.09, and this app is smoother to use. Its 4.88 rating also reflects that, though part of it comes from prompted reviews.

6. Differentiation

The product has essentially nothing exclusive. The card-reading protocol is public knowledge in the Android community (GitHub has plugins like prepaidcard_reader), and CekSaldo, Saldoku, Emoney Info and Cetak Resi support about the same cards, possibly more. What it really has over others is distribution: it listed first, its name is an exact search term, and its launch post drew the most traffic. On features it has already fallen behind. CekSaldo has e-receipts, in-card transaction history and subscriptions, and Cetak Resi covers more card types and updates more often, while this app hasn't been updated since 08-19. So differentiation didn't drive its success. Being first, plus ASO, plus Threads did.

7. Visibility and copycat risk

Visibility: circulating in small circles. It went viral once on Indonesian Threads (410k views), but there are no revenue figures (it never monetized), no dedicated media coverage, and no discussion on X.
Copycats: TapCard: Cek Saldo E-Money (Mohammad Novian Akbar, listed 2026-10-26, 2 ratings), with almost identical copy: "no login, multi-card, local storage, export PDF/CSV". CekSaldo and Saldoku are contemporaneous rivals, and neither counts as copying it.
The one making real money in this niche is CekSaldo. With only 34 iOS ratings, it reached #25 on the Indonesian Utilities Top Grossing chart. That means the Utilities Top Grossing bar is low, and people will pay for upsells like "high-speed e-receipts (for expense reports)". Threads users have even said in comments that reimbursement needs receipts [^t4].

8. What others can learn

Find local NFC needs that Android has had for years but iPhone hasn't (look at what iOS opened up for card reading after 13). Use the exact words locals search with as the app name, and on launch day post a real-person demo video on the social platforms that are popular locally (Threads and TikTok in Indonesia).
Replicate in other markets: Malaysia's Touch 'n Go, Taiwan's EasyCard/iPass, Singapore's EZ-Link, Korea's T-money, Hong Kong's Octopus. First check whether the local market already has an official app or a mature third-party one. Octopus and EasyCard already have official apps, so there's less room there.
Monetization can follow CekSaldo: balance checks free, high-speed receipt and expense export as the paid must-have.

9. Uncertain

There's no rating curve for the first two weeks after the August listing (the database starts at 10-28), so it's impossible to tell how many ratings the Threads wave actually contributed.
What the relationship is between Hendri Budi Setiawan and Naufal Rusada (same team? ghost posting?) is unverified.
Whether the app has ads or triggers rating prompts wasn't checked, since I didn't install it.
Whether Saldoku officially listed on iOS is unverified.
Several developers started around mid-August at the same time. I found no evidence of a shared trigger (such as an open-source library or AI coding tool that made APDU commands easier to write, or a push for the Aug 17 national holiday).

[^t1]: Threads @naufal_r97 profile, www.threads.com/@naufal_r97 [^t2]: Reply from Threads @naufal_r97 on 2026-08-17, www.threads.com/@naufal_r97/post/DcKl6t0Eea5 [^t3]: Threads @naufal_r97 launch post 2026-08-17, www.threads.com/@naufal_r97/post/DcKWWAXk9cn (scraped via r.jina.ai, 2026-11-06) [^t4]: Reply from Threads @slowerhiker, www.threads.com/@slowerhiker/post/DcKzG5xkgyX [^s]: Threads @yurapsanjani 2026-08-17, www.threads.com/@yurapsanjani/post/DcIa2bmCWAU [^m]: www.bankmandiri.co.id/e-money/cara-cek-saldo [^r]: App Store reviews page, apps.apple.com/id/app/cek-saldo-emoney/id6801944056?see-all=… [^i]: tekingame.indozone.id/gadget/921041714/7-aplikasi-cek-saldo-… Other data: appstore database (app_day, app_profile, app tables, 2026-10-28 to 11-06), googleplay database app_profile (2026-11-06), iTunes lookup (2026-11-06), TikHub TikTok search (2026-11-06).

This article was written by AI from public data and the data we collect daily. Numbers are sourced, and inferences are labeled.