How I built 10 free Android apps from my phone
By Frantz Vardman · 2026-11-15
I'm Frantz Vardman, and I don't build apps at a desk. Every one of my 10 Android apps, and the app store that delivers them, was built from my phone.
That sounds like a gimmick until you see how the work actually splits up. The phone is where I decide what the app should do, test it in my hand, and catch the things that feel wrong. The heavy lifting happens somewhere else.
The phone is the remote control
I describe what I want to an AI coding assistant, it writes and edits the Kotlin code, and the code lives in a GitHub repository. Nothing gets compiled on my phone. When the code changes, GitHub's servers build the app, run its tests, take screenshots of every screen, and produce a signed install file. I download that file, install it, and use it like anyone else would.
Testing in my hand is the part I won't hand off. When Own It dropped me into the middle of the page on first launch, or a button did nothing, I found it because I was using the app like a real person, not reading a test report.
Builds that cost nothing
Private repositories on GitHub's free plan get a limited number of build minutes a month, and Android builds eat them fast. I hit 90% in the middle of a month. The fix: public repositories get free build minutes. I moved the build jobs into a public repository that pulls the private code with a token, so the code stays private and the builds stay free. A small watcher checks for changes every hour and only rebuilds the apps that changed.
What I built this way
- Own It: the business side of music for independent artists
- Safe to Spend: what you can safely spend until payday
- Signal Fire: staying in touch and first aid when there's no cell signal
- Rex Voice: voice cloning that runs entirely on the phone, with spoken consent
- Bombs & Bullion: an arcade game with 10 animal superheroes
- …and five more, all free, offline, with no account and no ads
Rules I hold every app to
No account. No ads. Nothing leaves the phone unless the app clearly needs it. Medical and legal content comes from official sources and says so. And every app gets a plain privacy policy before it ships.
If you want the exact setup, the build files and the steps, I packaged them into a playbook.
Go further
Free Builds Playbook: Ship Android Apps on $0 CI
Build, test, sign and publish Android apps without paying for build minutes, keep your code private, and get updates onto every phone automatically.
$29 · See it →I Built 4 Android Apps From My Phone
The exact workflow I used to build four Android apps from a phone with AI and free cloud tools.
$15 · See it →Frantz Vardman builds free Android apps, runs the Free Lane app store and produces music as AceThe_Kid. More about Frantz.