Hebrew learning app: from side project to a subscription business
Designed, built and marketed solo. Paywall experiments, onboarding and ASO, then a native iOS version.
3,200
active users
4×
ARR in a year
Independent developer · Pärnu, Estonia
I build and sell my own apps. I'll build yours the same way.
Android, iOS and Flutter apps for founders, plus WordPress for agencies. One senior developer from scope to store release — with paying users of my own to prove the process works.
my_products.log updated Nov 2026
- 3,200
- active Android users, Hebrew learning app
- 7.41%
- day-7 download-to-paid on iOS
- 4×
- subscription revenue growth in 12 months
- Kotlin → Swift
- native SwiftUI port, shipped to the App Store
- Kotlin · Jetpack Compose
- Swift · SwiftUI
- Flutter
- WordPress · Astro
- RevenueCat · Firebase
- AI features in production
Four ways to work together
Fixed scope or a monthly retainer. Contracts and invoices in EUR.
01 / Founders MVP development Mobile or AI-powered MVP in 6–8 weeks, fixed price, code you own. from €5,700 → 02 / Startups Fractional CTO Part-time technical lead: architecture, hiring, vendors, roadmap. from €750/mo → 03 / Agencies White-label development Overflow capacity for apps and WordPress, under your brand, NDA by default. from €30/h → 04 / Businesses WordPress & maintenance Custom themes, content pipelines, updates and monitoring on a plan. from €120/mo →
Proof, not promises
Android to native iOS in SwiftUI
Compose app rebuilt natively for iOS with shared product logic and StoreKit subscriptions.
7.41%
day-7 download-to-paid
Korean Alphabet: Hangul
Hangul course with Phrase X-Ray breakdowns and stroke-order practice, ported natively to iOS.
10K+
downloads on Google Play
An EU developer, not an outsourcing chain
You talk to the person who writes the code. Overlaps with Berlin, Helsinki and Amsterdam working hours.
- CET+1 time zoneOverlap with all of Europe and the US East Coast mornings.
- EU-based, EU-friendlyBased in Estonia, contracts and invoices in EUR, data processing agreement on request.
- You own everythingCode, accounts and store listings sit in your name from day one.
- AI-assisted, senior-reviewedI use AI tools to build faster, so you pay less. Every line is reviewed and shipped by me.
How a project runs
- 01 20-minute call Your idea, users and deadline. Honest answer on fit.
- 02 Written scope & fixed quote Features, milestones and price on one page.
- 03 Weekly builds A test build on your phone every week, not a demo at the end.
- 04 Launch & handover Store release, analytics, docs. Support plan if you want it.
Not sure about budget yet?
Describe your app in one sentence and see a price range and timeline in 30 seconds.
Questions clients ask first
How much does an app cost?
Most MVPs I build land between €5,500 and €12,000. After a 20-minute call you get a fixed quote in writing, so the number does not move during the build.
Native or Flutter?
Flutter when you need both stores fast on one budget. Native Kotlin and Swift when performance, platform features or long-term polish matter more. I build both and will tell you which fits.
Who owns the code?
You do. The repository, developer accounts and store listings are in your name from the first day.
Can you work under our agency brand?
Yes. White-label work with an NDA, your tools and your process. Your client never needs to know I exist.
What happens after launch?
You can take the code to your own team with full docs, or keep me on a monthly support plan for updates, fixes and new features.