Mobile app development

Mobile app development for iOS and Android

We build iOS and Android apps in React Native and Flutter from one codebase, from the first MVP to release on the App Store and Google Play, connected to your backend and APIs.

Get your free technical audit See our work

Free audit in 3 to 5 days. Pay only after each milestone is approved. Only 1 to 2 new clients at a time.

What we build

Apps people keep on their phones

Cross-platform apps

One React Native or Flutter codebase for iOS and Android, so you ship both at once.

Native iOS apps

Swift apps where native performance or device features matter.

App MVPs

The core experience first, scoped into milestones, so you can test with real users quickly.

Store releases

App Store and Google Play submission, reviews and updates handled for you.

Push, offline and payments

Push notifications, offline mode and in-app purchases.

Backend and APIs

The server, database and APIs your app needs, or a clean connection to the ones you have.

Who it is for

Who it is for

  • Founders launching their first app.
  • Startups with a web product that customers want on their phones.
  • Teams with an app that crashes, lags or was left half-finished by a previous developer.

How it works

From free audit to launch, in milestones you approve

  1. 01

    Free audit

    Your idea or existing app reviewed in 3 to 5 days, with a roadmap.

  2. 02

    Milestones you approve

    Clear scope and a timeline you sign off before work starts.

  3. 03

    Build with a PM and QA

    Daily written updates; QA tests every build on real devices before you see it.

  4. 04

    Release and grow

    Store submission, launch and improvements month to month.

See our full process

Technologies

What we build it with

  • React Native
  • Expo
  • Flutter
  • Swift
  • Java
  • Firebase
  • Supabase
  • Node.js

Proof

Apps we have shipped

Sanitavia

A science-based weight-loss product for the French market, with iOS and Android apps delivering personalised nutrition programs.

Foodiary

A German nutrition-coaching platform with 350+ certified coaches. "Elkspire built Foodiary's app experience with real care for the details." Felix Mergenthaler, CEO, Foodiary.

See all our work →

Pricing

Mobile App Development pricing

  • App builds are milestone projects starting under $5K, paid after each approved milestone. For ongoing app work, the Startup Team is $2,500 a month.

Need a team for ongoing work instead? See the Startup Team.

Questions

Mobile App Development: frequently asked questions

Milestone projects start under $5K. The free audit scopes your app into milestones, and you pay only after you approve each one.

Both build iOS and Android from one codebase. React Native suits teams already using JavaScript or React; Flutter suits apps with heavily custom interfaces. The audit recommends one for your product.

Yes. We handle submission, store review and updates, using your own developer accounts.

Yes. The audit shows what to keep and what to rebuild, so you do not pay to start over.

You do. The code lives in your GitHub and the apps are published under your store accounts.

Yes. We build offline mode, push notifications and in-app payments when your product needs them.

Related

Step one is free

Not sure where to start? Get a free technical audit.

You get a clear plan in 3 to 5 days, whether or not you work with us.

Book your free audit call