Copying a two-month hit and reaching 400k installs in six weeks: the knockoff account of Vietnamese mobile game crosshair app "AimPro"
What it is An Android tool that overlays a crosshair on the screen for shooter mobile game players. It now doubles as an iPhone-style home screen, monetized only through ads.
Why it took off It launched a near-identical App while the original "Aimpro" was adding tens of thousands a day. It caught the traffic from store searches for "aimpro", and it most likely also ran Facebook video acquisition.
CHow you could follow it Stop building crosshairs and learn its playbook instead. Watch local regional tool charts. When a hit emerges, ship a version that targets the same search terms within two weeks and start buying installs. Or build a permission-based utility that iOS can't offer, and add in-app purchases instead of relying only on ads.
- Data (updated daily) · first launch 2026-08-19 · 11-07 installs 692,091
Android · Total installs worldwide Data 2026-10-29 → 2026-11-07 (10 days, 10 observations). Google's detail page only refreshes install counts every other day, so a flat day doesn't mean nobody installed.Android · Ratings count (cumulative) Data 2026-10-29 → 2026-11-07 (10 days, 10 observations)
A one-person studio in Hanoi, Vietnam, called KueMiin published an app nearly identical in name to "Aimpro", the crosshair tool that was hot in the same city. Within six weeks it hit 400k installs and now sits at 690k. It has no new features and no in-app purchases, and later it packed an entire iPhone-style fake home screen into the app. Here's what it is, where the traffic came from, how it makes money, and whether you should follow it.
A "tâm ảo" video with 70k views
In Jul 2026 6, a Vietnamese TikTok account mh08.loveyou posted a video titled "Chia Sẻ Aimlock Tâm Ảo Bá Nhất Ob54 Được Nhiều Idol Sử Dụng" (sharing the strongest virtual crosshair in the OB54 version, used by many idols). It has 70k views. Videos like this are everywhere among Vietnamese Free Fire players, with single posts ranging from a few thousand to over a hundred thousand views (TikTok search "tâm ảo free fire", 11-06).
"Tâm ảo" means a virtual crosshair: a floating overlay on your phone that draws a cross in the middle of the screen, which you aim with while playing a shooter mobile game. The mechanics are simple and need just two things: Android's "display over other apps" permission and a few dozen crosshair images. iOS doesn't grant that permission, so this business only exists on Android.
Amid this buzz, Jun 22, UniStarSoft, another Vietnamese developer, launched "Aimpro - Custom Crosshair". By Aug 18 it had 1.48M installs, adding 50k to 200k per day (Google Play install counts, third-party estimates). The next day, Aug 19, KueMiin released "Aimpro: Custom crosshair maker", package name aimpromaker.
What it is
A mobile crosshair overlay tool: pick a style, adjust size, color, opacity, and position, set which games it appears in automatically, and toggle it from the notification bar. The store page includes a disclaimer: "Visual overlay only. Not auto-aim, not a auto-clicker, not a recoil tool, does not modify game data."
What users actually want is more direct. The top-rated review (50 people found it helpful) from Oct 8 reads: "this app good but we need better head shot than now please". Players want headshots, and a transparent cross image can't deliver that, which is part of why ratings in this category are generally low.
In Oct 22, the 1.0.11 version grew the APK from 60 MB to 155 MB (per APKPure version history) and was renamed "AimPro: Crosshair & Launcher". The second paragraph of the store page now reads: "AimPro also replaces your home screen: after installing, you can set it as your default launcher." It includes an App Library, a Control Center, a "status bar Dynamic Island," glass panels, a lock screen, weather, a calculator, photos, AI chat, and a QR scanner. The crosshair is now just one icon inside a fake iPhone home screen.
Where the traffic came from: the name, paid acquisition, and existing demand
| Date | Cumulative global installs |
|---|---|
| 09-08 | 821 |
| 09-11 | 5,407 |
| 09-19 | 108,647 |
| 10-05 | 340,655 |
| 10-08 | 407,671 |
| 10-29 | 574,414 |
| 11-06 | 692,091 |
Source: Google Play install counts, 9–October; figures are third-party estimates.
Two steep climbs: from Sep 11 to 19, eight days added 100k; from Oct 4 to 8, it added nearly 200k more, with single-day peaks above 60k. Since then it has been adding over ten thousand a day, with 7k added in the last 118 days.
The first source is the name (confirmed). Vietnamese players spread the word "download Aimpro", and searching "aimpro" on Play brings up two apps. In Nov 2, on the Vietnam Tools free chart, the original ranked #11 and this one ranked #40, still using the old name "Aimpro: Custom crosshair maker".
The second is Facebook video ads (inferred). It has at least two Facebook pages: one named "Aimpro: Custom crosshair maker", with the video "Custom Aim For Free Fire" at 16k views and only 17 reactions; another created this year, with a video at 10k views. High views with almost no engagement looks like ad creative, and the staircase pattern of 100k over eight days and 60k in a single day looks more like an ad schedule than organic growth. I couldn't directly see how many ads it runs in the Meta Ad Library.
The third is existing demand (confirmed). Shooter mobile game players in Vietnam, Thailand, and India were already looking for this kind of tool. But no creator has specifically covered this app. Searching "aimpro" on TikTok turns up a US creator teaching CS2 aim training, whose course is also called AIMPRO.
Engagement is very low: 690k installs have only 935 ratings, a ratio of 0.14%. The original had 5.49M installs and 93k ratings, a 1.7% ratio, 12 times higher. The rating is 3.6, and the Vietnam store shows 3.2. From the outside you can't tell how many installs came from ads and were opened once and abandoned, but the ratio suggests many did (inferred).
Where the money comes from: only ads, so it has to be your home screen
There are no in-app purchases. The store page is marked "Contains ads," and it has never charted on any top-grossing list. Its only revenue can come from ad impressions.
A crosshair tool is something you open before a match, so you might open it a few times a day, which means few ad impressions. Becoming the default home screen changes that: every press of the Home button lands in it, interstitial and open-app ad impressions multiply, and retention rises with them (inferred; revenue isn't publicly visible).
This isn't its idea alone. From 2026 7 to October, a large batch of new Google Play apps with "Launcher" in their names appeared, many with nothing to do with home screens: shooters, mahjong matching games, cleaners, video downloaders, beauty cameras. Several have 500k to 1.3M installs. Reddit users are already complaining about "games that are really launcher swaps."
Mind the timing: the home screen was added in Oct 22, while the two growth waves came in mid-September and early October. The home screen isn't why it took off; it's a way to squeeze more traffic out of it after it took off. Daily installs after the update are about the same as before.
Who it's competing with
| Product | Launched | Scale (Google Play, 11-06) | Notes |
|---|---|---|---|
| Aimpro - Custom Crosshair (UniStarSoft, Vietnam) | 2026-06-22 | 5.49M installs, +7k in the last 340 days, 4.75 stars | This year's original hit, crosshair only |
| Custom Aim - Crosshair Pro(ItDeveApps) | 2015 | 18.7M installs | Established, in-app purchases $0.99–16.99 |
| Crosshair Pro: Custom Scope(Pipi Chick Studio) | 2019 | 14M installs, +7k in the last 120 days | In-app purchases up to $99.99, has charted on the Indonesia Tools top-grossing list |
| Custom Crosshair & Aim(ManojPandey9q) | 2026-08-25 | 330k installs | 6 days after AimPro, mainly India |
| AimDot - Custom Crosshair FPS | 2026-10-21 | 197k installs, +7k in the last 160 days | The newest follower, copy that nearly mirrors the original, and its weekly growth has already passed AimPro's |
It's a follower itself, and others are now passing it. The barrier to entry is a floating window plus a pile of images; anyone who can write Android code could build it in two weeks.
Who is behind it
KueMiin is registered in Hanoi under a person named BUI LE DUC. Since 2021 it has published 24 apps, about 3M installs in total (AppBrain). The list reads like trend-chasing: a Sprunki-style monster music DIY game (920k installs), a BitLife-style life sim, a US class-action claim helper, and 3D parallax wallpapers. The playbook is consistent: when someone's app takes off, ship a clone right away, slap a name on it, buy ads, and monetize through ads. The original, UniStarSoft, is also run by a Vietnamese developer, and I don't know whether the two are connected.
If it were you
My take: this app itself isn't worth following. What you can take from it is the playbook. The crosshair category is already packed, and this year's upside was divided among the original and a string of copycats.
Who it suits: small teams that already mass-publish utility apps on Google Play, have Facebook / Google ad accounts, and can calculate payback from ad eCPM. Especially those with experience in Android-heavy markets like Vietnam, India, and Indonesia.
Who it doesn't suit: people who want to build a product with reputation and subscription revenue; indie developers who don't buy paid acquisition and wait only for organic traffic; anyone who can't live with a 3-star rating or the risk of Google pulling the app at any time for "impersonation / misleading" behavior.
How to do it: stop building crosshairs. Learn three things. First, watch the local Tools charts: when a tool hits a million installs within a month, ship a version that catches the same search terms within two weeks. Second, pick permission-based tools that iOS can't do but Android can (floating windows, home screens, lock screens, notification bars), where competition is only among small Android shops. Third, if you do build a crosshair, build the half it skipped: like Pipi Chick, crosshair packs by game plus in-app purchases, not just ads.
How to acquire users: store search terms plus vertical short videos on Facebook, with creatives that use gameplay footage with crosshair effects; start with big markets like Vietnam, Thailand, and India, where Free Fire and PUBG Mobile are popular.
When the window closes: these follower windows usually last only one to two months after the original takes off. The crosshair wave has passed. The original started growing in June, and new copycats were still joining as late as October, so there's a tail, but it won't last into next year.
What would mean I got this wrong: if AimPro's home-screen version shows a clear rise in ratings and daily installs over the next month or two (say, a rating-to-install ratio approaching the original's 1%), that would suggest "crosshair + home screen" is something users actually want and not just a monetization device, and that combination would be worth taking seriously. Conversely, if Google starts removing these "disguised launcher" apps in bulk, the second path closes.
Research notes: competitor table, acquisition evidence, full research report
- Competitors
Name Where Launched Scale How it differs from this one Aimpro - Custom Crosshair(UniStarSoft) Android 2026-06-22 5,494,023 installs, +7K in the last 341,752,93 days, rating 4.75, Vietnam TOOLS free #11–32 This year's original hit, named after AimPro's name; crosshair only, no home screen; far higher rating and engagement than AimPro Custom Aim - Crosshair Pro(ItDeveApps) Android 2015-10-16 18.7M installs, 166K ratings, in-app purchases $0.99–16.99 Established leader, runs on in-app purchases; AimPro has none and relies only on ads Crosshair Pro: Custom Scope(Pipi Chick Studio) Android 2019-09-07 14.0M installs, +7 in the last 118,732 days, Indonesia TOOLS top-grossing #105 An in-app purchase product with top-grossing signals; AimPro charges nothing Custom Crosshair & Aim(ManojPandey9q) Android 2026-08-25 329,160 installs Copycat from the same period, mainly India; no home screen AimDot - Custom Crosshair FPS Android 2026-10-21 196,668 installs, +164,265 in the last 7 days Newer copycat, in-app purchases $6.99–79.99, weekly growth already exceeds AimPro's Game Mode / Game Mode Pro: Launcher & HUD and similar gaming launchers Android 2024 Game Mode(devayu labs)6.6M Same game-plus-launcher format, but positioned as game acceleration; AimPro is a crosshair first, wrapped in a fake iOS home screen Crosshair X(CenterPoint Gaming) Other 2023 ago (Steam) Highest single TikTok official-account post: 5.66M views Paid PC version, driven by TikTok content; AimPro is phone-only and has no content - Where users come from
- Confirmed piggybacking on a same-name hit to capture store search: 2026-08-19 listed as "Aimpro: Custom crosshair maker" with package name aimpromaker, nearly identical to UniStarSoft's "Aimpro - Custom Crosshair", which was already at 6-22M installs when this one launched 1.48; on the Vietnam TOOLS chart it still uses the old name and shares a chart with the original (11-02: original #11, this one #40)
- Inferred Facebook video ads: two Facebook pages, Aimpro 11 "Aimpro: Custom crosshair maker" (video at 16k views, 17 reactions) and "AimPro - Headshot & Crosshair Helper" (10k views). High views with low engagement looks like ad creative; the steep climb of 8k over 100 days in mid-September and 60k in a single day in early October looks like an ad schedule. Not tracked in the metaads/googleads libraries, and I couldn't find the ads directly in the ad library.
- Confirmed natural demand from Vietnamese Free Fire players for "tâm ảo" virtual crosshairs: many Vietnamese Free Fire tâm ảo / aimlock sharing videos on TikTok (3–170k views per post, TikHub); but I found no creator content made specifically for AimPro itself
- Confirmed third-party APK sites: Softonic, Uptodown, APKPure, and AppBrain all list it
- Confirmed a default home screen (launcher) raises retention and ad impressions: 1.0.11 (2026-10-22) APK grew from 60 to 155 MB; the description was rewritten around an iOS-style home screen and prompts users to set it as the default Home; during the same period many non-launcher apps on Play were renamed "xx Launcher"
Why AimPro: Crosshair & Launcher (com.kuemiin.aimpromaker) was able to take off
Channel: Google Play · Developer KueMiin (BUI LE DUC, Hanoi, Vietnam) · Store launch 2026-08-19 · As of 2026-11-06 worldwide cumulative 692,091 installs. Sources: our googleplay library (app_profile / app_day / app_day_extAppstoreSpy estimate, chart_rank, v_chart), googleads / metaads libraries, the Google Play store page, APKPure version page, Facebook pages, TikHub TikTok search, x-radar.
Bottom line
This isn't a category they invented. It's a small Vietnamese studio copying a local hit: UniStarSoft Jun 22, also a Vietnamese developer, launched "Aimpro - Custom Crosshair" (a mobile game crosshair overlay), which grew to 1.48M in two months. KueMiin followed in Aug 19 with an almost identical name, "Aimpro: Custom crosshair maker", riding the "Aimpro" search traffic, plus (very likely) Facebook video paid acquisition, reaching 690k. In late October it also packed a full iOS-style home screen (launcher) into the app and renamed it "AimPro: Crosshair & Launcher". The likely goal: get users to set it as their default home screen, turning a one-time crosshair tool into an ad slot that opens every time the screen lights up. The differentiator (adding a launcher) came after the growth, not the reason for it.
1. Data: how much did it actually grow?
- Worldwide cumulative installs (googleplay.app_day_ext, AppstoreSpy estimate + our own collection):
- 09-08:821; 09-11:5,407; 09-14:26,117; 09-18:91,008; 09-19:108,647 → from September 11–19, up 100k in 8 days. That was the first wave of growth.
- 10-01:201,751; 10-05:340,655 (10-04/05 two-day gain about +126k); 10-08:407,671 (single day +65k) → second surge in early October.
- Since then it has settled at roughly 10k per day: 10-17 502,142; 10-29 574,414; 11-06 692,091. Last 7 days +117,677 (app_profile.installs_gain_7d, about 17k/day).
- Only 935 ratings, a rating-to-install ratio of about 0.14%. Its same-name rival UniStarSoft sits at 93,290 / 5,494,023 ≈ 1.7%, roughly 12x higher. Rating 3.6, written reviews almost 0 (app_snap.written_reviews = 2). That points to very low user engagement, and a lot of the installs are probably low-intent traffic (paid acquisition or desktop prompts). Inference, not verified.
- Charting: it has only hit the category Top Free chart. Vietnam TOOLS Top Free 10-29 #90 → 11-02 best #40 → 11-06 #116; Thailand TOOLS best #77 (10-31); India, Argentina, Malaysia and Indonesia only between #150 and #200 (chart_rank). It has never charted on Top Grossing and has no in-app purchases (offers_iap = False), marked "Contains ads", so its revenue can only come from ads.
2. Competitors: a crowded category that keeps getting copied
"Mobile game screen crosshair overlays" (Android's Display over other apps permission, which iOS does not allow, so they basically only exist on Android) is an old category. This year it heated up again among Free Fire players in Vietnam/Southeast Asia (called "tâm ảo", virtual crosshair in Vietnamese; many Free Fire "tâm ảo" share videos on TikTok, each with 30k–170k views, per TikHub search).
| Product | Where | Launched | Scale (googleplay library, 2026-11-06) | How it differs from AimPro |
|---|---|---|---|---|
| Aimpro - Custom Crosshair (UniStarSoft, Vietnam, com.customcrosshair.aimpro) | Android | 2026-06-22 | 5,494,023 installs, last 7 days +341,752, rating 93K/4.75, charted on Vietnam TOOLS Top Free #11–#32,7 | The real hit in this category this year. AimPro's name was modeled on it; pure crosshair, no in-app purchases, no launcher |
| Custom Aim - Crosshair Pro(ItDeveApps) | Android | 2015 | 18.7M installs, 166K ratings, in-app purchases $0.99–16.99 | Veteran, relies on in-app purchases |
| Crosshair Pro: Custom Scope(Pipi Chick Studio) | Android | 2019 | 14.0M installs, last 7 days +118,732, in-app purchases up to $99.99, reached #105 on Indonesia TOOLS Top Grossing | The only one in the category with a clear revenue signal |
| Crosshair Pro - Custom Scope(Orange Infotech) | Android | 2024 | 924K | Same product |
| Custom Crosshair & Aim(ManojPandey9q) | Android | 2026-08-25 | 329,160, +33,576 in the last 7 days | Another copycat 6 days after AimPro |
| AimDot - Custom Crosshair FPS ("SEGA Golf Charity INC.") | Android | 2026-10-21 | 196,668, last 7 days +164,265, Vietnam TOOLS #32 | The newest copycat, with listing copy nearly lifted from UniStarSoft's; its weekly gain has already passed AimPro's |
| Game Mode (devayu labs), Panda Touch Pro, Game Mode Pro: Launcher & HUD (G19 Mobile) | Android | 2024 | 5–6M tier | "Game mode / game launcher" apps, closest in form to AimPro's "crosshair + launcher" |
| Crosshair X(CenterPoint Gaming) | PC / Steam | 2023 ago | TikTok account centerpointgaming has a single video with up to 5.66M views | Paid PC version, driven by TikTok content |
| Built-in crosshairs on monitors and TVs (TCL Game Master, etc.) | Hardware feature | — | — | Big-screen use case, not phones |
Bottom line: it has nothing exclusive. The category's top spots are held by 2015/2019-year-old products. This year's new hit is UniStarSoft; AimPro is one of the second-tier copycats, and newer ones like AimDot are already outpacing it.
3. Growth tactics: where users come from
- Riding the hit's name to capture store search (confirmed). UniStarSoft's "Aimpro - Custom Crosshair" launched 6-22, and by 8-18 had 1.48M installs, with 5–200k added per day (app_day_ext). KueMiin launched right when it was hottest (8-19), with package name
aimpromakerand the title "Aimpro: Custom crosshair maker", differing from the hit by only a suffix. On the Vietnam chart the old title still appears (v_chart: 2026-11-02 Vietnam TOOLS #40 "Aimpro: Custom crosshair maker", while UniStarSoft was at #11 the same day). When Vietnamese users pass along "download Aimpro", searching "aimpro" in the store returns both. - Facebook video ads (likely, not directly verified in the ad library). It has at least two Facebook pages: "Aimpro: Custom crosshair maker" (facebook.com/Aimpro11, video "Custom Aim For Free Fire" with 16k views and only 17 reactions) and "AimPro - Headshot & Crosshair Helper" (page id 61593054994140, created this year, video with 10k views). High views, almost zero engagement, is the typical look of ad creative. Our metaads / googleads libraries don't track it (not on our list, so not finding it doesn't mean it isn't running), and the Meta ad library web view returns nothing without logging in. The steep 9-11-to-9-19 climb of 8k over 100 days, and the single-day jumps of around 60k at 10-04/10-08, also look more like an ad spending schedule than organic growth.
- Organic demand from Vietnamese Free Fire players (background, confirmed). Vietnamese TikTok has plenty of "tâm ảo / aimlock" share videos (per TikHub search), so the demand is already there. But no TikTok or YouTube creator content made specifically for AimPro turned up (only one Indian YouTube video, "AimPro App Kaise Use Kare", which can't be confirmed as referring to this Aimpro). x-radar returned 0 results for "aimpro".
- Third-party APK sites carry it (confirmed, small scale): Softonic, Uptodown, APKPure and AppBrain all index its old name, "Aimpro: Custom crosshair maker".
4. What's going on with the "Launcher"
- APKPure version history: 1.0.0 (8-25) – 1.0.10 (9-24), package size 36–60 MB; 1.0.11 (10-22) package size jumped to 155 MB, and 1.0.12 (10-28) and 1.0.13 (11-03) both stay above 150 MB. The store listing now adds a full iOS-style home screen: App Library, Control Center, a "Status bar island", glass panels, lock screen, weather / clock / calculator / gallery / AI chat / QR scanner, and a prompt to set it as the default home screen after installing. The crosshair has become one entry point inside a launcher.
- This isn't an isolated case. The googleplay library shows a large batch of new apps with "Launcher" in the name, launched 2026 between 7 and October, many with nothing to do with home screens: Tricky Couples Launcher and Shooting Skies Launcher (Hero Fighting Games, games), Arrow Launcher, Car Launcher: Road Puzzle, Mahjong Triple: Tile Launcher, JunkRemover Launcher, XOX Video Downloader & Launcher, Beauty Camera & Photo Launcher. Several have 50–1.3M installs. On Reddit's r/degoogle, someone complained about "changing your launcher (home) app disguised as a game".
- Motive (inference, not verified): a crosshair tool is a low-frequency tool used once at the start of a session, so it shows few ads. Once it's the default home screen, users hit Home and land in it every time, multiplying ad impressions for app-open and interstitial placements and boosting retention. Launchers also aren't subject to background-launch restrictions. For an app that monetizes only through ads and has no in-app purchases, this is the most direct way to monetize 690k installs.
- The change happened in 10-22, while its two surges came in mid-September and early October. So the launcher is not what drove the growth; it's a monetization tactic adopted after the growth.
5. Developer profile: a Vietnamese "trend-chasing" studio
KueMiin (BUI LE DUC, Hà Nội, [email protected]) shows on AppBrain 2021 apps since 24, with roughly 3M cumulative installs. The apps under the same account look like trend-chasing: Monster Music DIY (Sprunki/Incredibox-style monster music, 920k installs), 8 Billion Lives: Life Sim (BitLife-style life sim, launched 2026-10-22, +20k in the last 7 days), TrackOne: Claim & Class Action (US class-action claim craze), Depth Wallpaper & 3D Parallax, SleepFan, Catch the Artist, Monster Attack: Arrow Breakout. The playbook is to see someone else's app take off, clone it fast, buy traffic, and monetize with ads. UniStarSoft (contact email [email protected]) is also Vietnamese; whether the two are related is unverified.
6. How many people have seen it
Almost nobody knows about it yet: no media coverage, 0 posts on X, no public revenue, no TrustMRR listing. But the category itself isn't short on people. The hit UniStarSoft is already at 5.49M, and in October AimDot showed up as a new copycat gaining 160k a week. The barrier to entry is very low (an overlay permission plus a few dozen crosshair images).
7. What to borrow
- On Google Play, within the first month after a local/regional hit takes off, a near-identical package grabs search traffic, paired with Facebook video paid acquisition. A two- or three-person studio can reach hundreds of thousands of installs in 6 weeks.
- Low-frequency tool → default home screen: bundle the tool into an iOS-style launcher, turning a "one-time tool" into an ad slot opened every day. This was a clear trend on Play in the second half of 2026 (see the list in section 4), but it carries policy risk (misleading, hijacking the default home screen), and it drags down ratings (this app has 3.6 stars).
- When picking products, look for permission-driven tools that iOS can't do but Android can (overlays, launchers). Competition there is only among small Android shops.
8. Uncertain
- Meta / Google ads: did they run them, and how much? Two Facebook pages have video creatives that look like ads, but I couldn't find the actual number of live ads in the ad library.
- Which countries are installs coming from? We only have the global total. The charts only show it low in category rankings in Vietnam and Thailand, so the install split is unknown.
- Retention and ad revenue after the launcher change: no visibility. Going by the 7-day install increase (about 17k/day), it looks about the same as before the rename, so the launcher didn't clearly drive new installs.
- Are UniStarSoft and KueMiin the same people or partners? Both have developers with the surname Bùi and are based in Vietnam. Not verified.
- Risk of removal from Google Play for "misleading" or impersonation. Hasn't happened.