Emoji Battery Friends: a Vietnamese publisher opens another account in the crowded emoji battery niche

Emoji Battery Friends is an Android status bar customizer that swaps the battery icon for bears, hearts, and stars. In about a week and a bit, it gained 21k installs and climbed to #23 on the US personalized Top Free chart. Looking closer, there's nothing new here. The same category already has two apps with tens of millions of installs and a dozen with millions, and its package name suffix is identical to two other "sibling" apps. This piece covers how it got going, how this category makes money, and why, for a small team, it's worth understanding but not worth chasing head-on.

A one-star review that 4 people marked as helpful

In Nov 2026 5, a US user named Stacy Howell left this on its store page:

Couldn't even get to the images for all 5 thousand ads in the first 1 minute… Uninstalled....save your time.

4 people marked it helpful (Google Play, 11-06). On the same page, the two reviews right next to it read "great app🥰" and "Good."

These reviews sum up the whole category: the idea is cute, lots of people download it, the ads are everywhere, some people uninstall on the spot, and others leave five stars without a second thought.

What it actually is

The store title is "Emoji Battery Friends – Emoji Battery Icon & Custom Status Bar". Six features listed: emoji battery icons (animated, changing with charge level), status bar color and size, stickers you drag onto the status bar ("a bear, a star, or a sleepy cat"), status bar gestures, notch decorations, and one-tap reset.

The mechanism is explained in the last paragraph of the description: it uses Android's AccessibilityService to draw a fake status bar at the very top of the screen, covering the system one. iPhone doesn't allow this, so it's an Android-only trick. On TikTok, the iPhone version of this trend is fake tutorials using Shortcuts / widgets. One such video from @iphonnation has 12.4M views.

Money comes from two places: ads, plus in-app purchases of $2.99–$6.99 per item (Google Play, 11-06). It hasn't charted on any top-grossing list, so IAP is probably not the main income. Ads likely do most of the earning (inferred).

The developer page lists Pham Quang Truong, with an address in My Dinh, Hanoi. The Growly account also has 9 other apps, including AI hairstyle, AI photo retouch, and the AI speaking tutor LunaSpeak, with about 20.8M installs combined.

How it grew

Google Play installs (cumulative):

In 7 days it gained 21,012 installs, 11-06 7,904 a day, and is still accelerating. On the same day it sat on the personalized free charts in 7 countries: US #23, India #35, Brazil #54, Canada #127, followed by Australia, UAE and Germany.

Take these numbers with a grain of salt. First, #23 on the US personalized chart needs only about 4 thousand global installs a day. The entry bar for this chart is low, so the rank looks better than the real volume. Second, 4.65 ratings with 2 stars and not one single one-star review. The daily new ratings / new installs is about 0.76%, which is high for a utility app and looks like an in-app prompt nudging people to rate (inferred, unverified).

Who it competes with: it's a copycat itself

Apps with emoji battery / status bar in the name are among the biggest on Google Play (Google Play installs, 11-06):

11-06 of the top 50 on the US store's personalized Top Free chart are 7 apps like this. Emoji Battery Friends sits in the lower half: about 1/20 new installs a week, which is all ZAppsolution's app.

How low the bar is: the source code marketplace Codester sells an "Emoji Battery Status Bar with AdMob Ads Android" kit for $19. Most of the top players in this space are Vietnamese studios.

How the volume happens: one codebase, several accounts

The biggest clue is in the package name. Emoji Battery Friends' package name ends in emoji.battery.icon.statusbar.sticker.customize. STARVIA's "Battery Emoji Buddies" (listed in September, already 780k installs) and OMG! Bros' "Battery Emoji Buddies & Themes" (listed 10-29) end in exactly the same string.

In TikTok's ad transparency library, a Vietnamese company called LUTECH SOFTWARE TECHNOLOGY is linked to Growly's LunaSpeak, STARVIA's emoji battery app, and another OMG! Bros app. The ad landing pages point straight to these Play package names. Lutech's website calls itself a "mobile app and distribution" company, and a "Lutech Studio" account is also putting out emoji battery apps.

Put together: Growly, STARVIA, and OMG! Bros are very likely several developer accounts of the same publisher, running the same code under different names and icons, spreading across the store to take more search slots and chart spots. Whichever account performs best gets more ad budget (inferred, fairly confident; no business registration confirms it).

How much this app itself spends on acquisition isn't visible from outside. What is visible: LunaSpeak under the same account has two Meta Pages running 274 and 108 active ads, 6,258 in total historically. The AI photo app Genify has run 4,711 ads, all "install app" ads (Meta Ad Library, 11-05/06). This group clearly buys paid acquisition. Good ranking with small absolute volume fits a "test in the US on a small budget until it pays back" playbook (inferred).

The category has steady organic buzz on TikTok, with emoji battery videos at 8 million+ views, but they promote other apps. On X, nobody has mentioned it in nearly 30 days, and no media has covered it.

What users are complaining about

Its own store page has few reviews. Look at the sister app STARVIA's "Battery Emoji Buddies": 150 US reviews on Google Play (late October): 63 one-star, 68 five-star, with almost nothing in between. The one-star reasons almost all boil down to one thing:

Flooded with ads just to install the thing. Also wants to access entire phone… Uninstalled immediately.(10-28) way too many Ads after every click 😕(10-27) Cute idea but not worth it with all the ads(10-30)

Most five-star reviews are just "good", "nice", or "excellent". What users want (cute battery icons) is real. What they hate is the ads and the accessibility permission that asks for access to the whole phone. This is the only visible gap in the category.

If it were you

Bottom line: This is a category that Vietnamese publishers have turned into a red ocean with multiple accounts and paid acquisition. Emoji Battery Friends is one new account in that system, not a new opportunity. What you can learn is the playbook, not the product.

Who it suits: Overseas tool teams that already monetize with AdMob, run install ads on Meta / Google, and have several developer accounts. For them it's a proven pipeline. A $19 source kit with a new skin is enough to enter and test.

Who it doesn't suit: Indie devs who don't buy ads and want organic traffic only, or anyone without multiple developer accounts who can't absorb Google Play's review risk around "duplicate content" and accessibility permission abuse.

How to build it, if you really want to: Don't make the Nth copy of the same thing. Two angles are worth testing. One is to go the opposite way: a clean version with few ads and a one-time purchase, put "No ads flood" on the first screen of the store listing, and catch the users who uninstall within a minute. The other is to study ZAppsolution and Tools for Everyday and layer a new mechanic on top. They added Shimeji, a screen pet, and that single app reached 300 million.

How to get users: Store search is the main channel, so write the title and subtitle around "emoji battery" and "status bar". On TikTok, shoot 10-second before-and-after videos like "my battery became a little bear". The category has a precedent of millions of organic views. Then put a small budget behind the US personalized chart. A few thousand installs a day can get you into the top 25.

When it's too late: There's no clear window. The category started growing in spring 2026, and new accounts were still entering every week as of November. The window has stayed open but is getting more crowded.

What would show I'm wrong: If Emoji Battery Friends reaches STARVIA's scale (hundreds of thousands of installs) within a month with good retention, the category isn't saturated and new accounts can still get a big share of traffic. Conversely, STARVIA's daily adds have already dropped from a peak of about 90k to 13k. If this app also falls off within two or three weeks, each new account lasts only a month or two, and what matters is endlessly launching new accounts, not making any single one good.