Someone else's hit, its Android version: a Vietnamese tools studio beat everyone by 9 days cloning "draw a stroke, get a melody", reaching 1.65M installs in a month

A Google Play app called Draw Music: Sketch to Sound launched on Oct 2, reached 1.65M installs by Nov 6, and ranked #5 on the US Google Play Music free chart. The idea isn't its own: the original was an artist's web toy that blew up on X and TikTok in September. What it did was narrower: in the weeks before the original shipped an Android version (and when that version still cost money), it put a free version in the store first. Below: how it caught the traffic, where the money comes from, and why this particular window has already closed. What's worth keeping is the playbook.

"Avoid the AI-made knockoffs"

On Oct 11, original creator Tala Schlossberg finally uploaded Play_Music_Theory to Google Play. The update note was a single line: "First public release... (avoid fake copycats made by AI)", meaning don't download the AI-generated knockoffs.

Too late. Banix Studio's Draw Music had already been live for 9 days by then. By Nov 6, the original's Android version had 1,602 installs, while Banix's had 1.65M (Google Play install count, 11-06), a gap of roughly a thousand to one.

The original's Android version was paid. A review on its store page reads: "A web app charging $3, and then you pay again to unlock features... bro, I could just open the free web version."

What it is

A canvas. Draw a stroke with your finger and press play to hear a melody. The store page is blunt about what's under the canvas: an invisible 32×20 grid, time on the horizontal axis and pitch on the vertical. Every stroke snaps to the nearest cell and lands on the beat. Scales include pentatonic, major and minor, so "you can't play a wrong note." Four colors map to four instruments (electric piano, marimba, synth pad, bells), and layering them gives you polyphony. There's also a template library (birds, animals, landscapes) you can tap to hear. It exports WAV and MIDI and works fully offline.

The core interaction matches the original. What it adds is templates, export, and above all: it's free. The cost is ads. On Nov 4 it shipped another update with a "color wheel 200+ instruments" feature and "multiple canvases."

Banix Studio is no newcomer. The address on its store listing is in Thai Binh Province, Vietnam, and it already has Easy Piano Keyboard - Piano88 (2,100 million+ installs) and Draw Animation (17M installs), about 45M installs across all its apps. For a shop that already makes music and drawing tools, cloning a toy like this is easy.

The demand was lit by someone else

The original playmusictheory.net first spread on X in mid-September, then hit TikTok. The official account posted "see what your dream vacation sounds like" on Sep 17, which got 12.5M views. Comment sections and hashtag pages kept asking the same question: "What's the app where you draw and it makes music?" TikTok even had a topic aggregation page for "the drawing makes music trend."

At the time the original was only web plus a paid-upfront iOS app. Android users searching the store for "draw music" saw Banix first, with a title that used exactly those two words. Around Oct 17, ordinary users started naming it in videos ("app: Draw Music: Sketch to Sound"), and the second wave of users followed that name to find it.

The original's heat faded quickly. Its official account's videos after mid-October mostly got a few thousand to tens of thousands of views (TikTok, 11-06). Banix's curve kept climbing, thanks to the next step.

The heat faded, so it bought more

Growth curve (third-party estimate): about 900 installs on Oct 10, 15 per day by day 27k, 19 per day by day 127k, then ~370k extra in one day on day 21, 22k by day 690, and after that adding 5–60k a day. The jump around day 21 is unexplained; it could be a first paid push or store featuring.

What we can confirm is what happened after Oct 22: a batch of TikTok accounts with 100k to 1.27M followers posted videos on the same theme, including @restoration.aya (1.27M followers), @ninaandfam867 (1.11M), @devontecycles (1.04M), @decker1k (730k, caption tagged #ad and named Draw Music: Sketch to Sound), plus @7berry's "Download on Google Play!" and @jpdoestto's "you can use it offline too" (matching its "100% offline" pitch). These posts are all labeled as commercial content on TikTok, and each gets only a few hundred to 50k views, far below follower counts. This is typical mid-tier creator seeding. Spend is unknown.

The result: on the US music free chart it sat at #29 every day from Oct 6 through Nov 5, #3 in Canada, #3–4 in Brazil, and it charted in 30 countries in total. Its best overall US free rank was #128 (11-01).

Where the money comes from: ads turned up high

Free to download, with ads, and one in-app purchase at $4.99–$9.99 (Pro removes ads). On the music Top Grossing chart it sits between #180 and #200 across more than a dozen stores including the US, Netherlands, Saudi Arabia, South Africa and Nigeria, and its rank is slowly rising. Revenue isn't high, but it's real paying users.

Ads are what users complain about most. Rating 3.9 (store page, 11-06), with clusters at 1 stars and 5 stars. The most useful one-star review came from Dana West, Oct 19,408 people marked it helpful:

"Way too many ads. After 5 to 10 minutes I'd already been forced through 15+ ads. Tap anything and another ad pops up 3 times... even pausing shows an ad, and a banner covering a third of the screen stays on."

The developer replied the same day: "Sorry, but to keep maintaining this free app we need ad revenue. If you don't want ads, you can buy the Pro version." Another user, Reyna, wrote: "I saw it on Apple and I've wanted to play it ever since... there are more ads than on a piracy site." Polish-store reviews complain about "ads popping up and my drawing disappearing after I spent ages on it" and "stuck on the loading screen."

This is a novelty toy, and loading ads at peak interest to recoup fast is the standard move for a shop like this. Retention is probably weak (inference).

Who it's competing with

Banix was 13 days ahead of #2 and got roughly 7 times the installs. Anyone who entered in late October got a fraction of that.

If it were you

Grade C. This app itself has nothing left to copy. What's valuable is the playbook it demonstrated.

One-line verdict: the window for "draw a stroke, get a melody" on Android closed in mid-October. The original's heat faded, and what's left is bought traffic. Making a copy now means competing on price with an established shop that already owns the name, the charts and the creator channels.

Who it suits: small shops or solo devs that already run a set of similar tool apps, have ready-made project templates and ad-monetization plus creator channels, and can ship a new app within two weeks.

Who it doesn't suit: indie devs who want to build a product from zero around this specific mechanic; anyone planning a "better draw-to-music app" with subscriptions (this is a toy, not a tool, and users leave after a few days).

How to play it: don't chase this one, chase the next. Watch TikTok and X for web toys or paid iOS apps that suddenly blow up. Three checks: people in the comments ask "what's the app called"; the original has no Android version, or charges for one; the core interaction can be built in a week or two. If all three hold, ship a free Android version and use the words people asked for in the comments as your title.

How to get users: in week one, live off organic spillover, since the search terms are the traffic. Once it starts moving, run a mid-tier creator push immediately (100k to 1M followers, on-topic content) to turn short-lived heat into a chart position, then let the chart bring organic installs. Recoup ads and the ad-removal IAP while the heat lasts.

When to be early: this kind of window usually runs 2–4 weeks after the original goes viral. Anything that ships more than a month after the original blew up will most likely get scraps, like the 6 apps that came after BigSoft.

Signs you've misread it: ① Banix still adds over 50k installs a day and stays in the top 100 of the Top Grossing chart at the end of November. That means the mechanic has a long tail, not just a passing fad, and late entrants still have room. ② Someone has launched a clearly different version in another language or platform (say, a free iOS version, a tablet version, or a kids' education angle) and it's working. That means part of the category hasn't been claimed. ③ The original creator sues or gets the clones taken down. In that case the risk of copying this path has to be recalculated.

Data and sources

• Installs, ratings, charts: Google Play store pages and charts, as of 11-06. Daily curves since launch are third-party estimates.
• Reviews: English and Polish review sections of the Google Play store page (10-14 to 10-30).
• Original: playmusictheory.net, App Store, Google Play net.playmusictheory.app (update note 10-11).
• TikTok: official @play_music_theory account videos (from 9-17); creator posts from @restoration.aya, @ninaandfam867, @devontecycles, @decker1k, @7berry, @jpdoestto and others (10-22 to 11-06; labeled as commercial content by the platform).
• Developer: Google Play developer page (registered address in Thai Binh Province, Vietnam), AppBrain.
• Where the text says "inference", "estimate" or "unexplained", those are inferences and estimates.