Mobile app development: iOS and Android
We build mobile products starting from the actual user experience: native iOS and Android apps, cross-platform solutions and mobile-first web apps, all connected to the same backend.
At a glance
Start4AI develops mobile applications: native iOS (Swift/SwiftUI), native Android (Kotlin/Jetpack Compose) and cross-platform, when technically and commercially justified. Portfolio project: BeatRequest, a live music platform and mobile app for live events, with QR-code song requests and Stripe payments in 135 currencies; the native iOS and Android app is downloadable from the App Store and Google Play.
Native, cross-platform, or mobile-first web?
The choice isn't ideological, it's contextual: budget, required system features, update cadence and audience.
- Native iOS — Swift and SwiftUI, integration with the Apple ecosystem, App Store publishing
- Native Android — Kotlin and Jetpack Compose, Android-specific integrations, Google Play publishing
- Cross-platform — a single codebase, when system features are limited and speed matters
- Mobile-first web — no install needed, ideal for occasional users or guests
What we deliver in a mobile project
The interface, the backend, authentication, push notifications, payments where relevant, an admin panel and store-submission preparation. Analytics and error monitoring are included from the first version, so you see what users actually do, not what we assume they do.
Where AI fits into a mobile app
In-app conversational assistants, semantic search, image or document processing straight from the phone, personalized recommendations and voice agents. All of it runs on the same backend as the rest of your system, not as an isolated feature.
How we deliver a mobile project
- 01Scope: audience, main flow, required system features and target platforms
- 02Technical decision: native, cross-platform, or mobile-first web, with the reasoning documented
- 03Prototype of the critical flow, tested on a real device
- 04Iterative build, with test builds distributed to your team
- 05Store preparation: developer accounts, store assets, privacy policy
- 06Launch, error monitoring, and a 30-day warranty
Mobile project from our portfolio
BeatRequest — live music platform and mobile app for live events
- Problem
- Artists and DJs received song requests chaotically, through notes, shouting or messages, with no simple way to accept them or get paid.
- Solution
- We built a live music platform: a permanent QR code through which the audience sends song requests, dedications and tips from their phone browser, plus a live console for the artist. Payments are processed via Stripe, supporting 135 currencies.
- Result
- The audience participates without installing anything, and the artist sees requests in real time. The native iOS and Android app is downloadable from the App Store and Google Play.
How the budget is structured
- Scope + technical decision
- Fixed price, 1 week
- First working version
- Invoiced per accepted stage
- Store publishing
- Estimated separately; Apple and Google fees are paid by you
- Maintenance and OS updates
- Optional monthly package
A mobile app has a recurring cost: every major iOS or Android version requires upkeep.
When we do NOT recommend a mobile app
- Users would open the app only a few times a year — a web solution fits better
- There's no distribution plan; publishing an app doesn't automatically bring users
- The budget covers only the launch, with nothing for updates and maintenance
Frequently asked questions
- Do you build native iOS and Android apps?
- Yes. We work natively with Swift and SwiftUI on iOS and Kotlin and Jetpack Compose on Android, and cross-platform only when technically and commercially justified.
- Do you have apps published on the App Store and Google Play?
- Our public portfolio includes BeatRequest, a live music platform and mobile app. The native iOS and Android app is downloadable from the App Store and Google Play. We don't present apps we haven't published as already shipped.
- How much does a mobile app cost?
- It depends on the flows, integrations and platforms. We set the budget after the Scope phase, priced per accepted stage, with no code written beforehand.
- Do you help with store submission too?
- Yes. We prepare the builds, store assets and privacy policy, and go through the review process using your own developer accounts.
Have a mobile app idea?
Describe your user and the main flow, and we'll tell you honestly whether native, cross-platform, or mobile-first web makes the most sense.