Native or cross-platform?

Cross-platform frameworks like React Native suit most business apps and save time and money. Native makes sense for apps that depend heavily on device features or demanding graphics. We recommend one after discovery.

Do you handle App Store and Google Play submission?

Yes. We prepare listings, screenshots, privacy details and builds, and manage the review process for both stores.

You do. The code, design files and store accounts are yours.

iOS & Android App Development

04 · Mobile App Development01 of 07

Fast, polished iOS and Android apps, designed around the few things your users do every day.

Most apps are deleted within days because they're slow, confusing or pointless after the first use. We design and build apps around the handful of jobs your users come back for, make them fast and reliable, and launch on both stores with analytics in place.

Start a project

What's included

Platforms from one project: iOS and Android: 2; Platforms from one project: iOS and Android
Between test builds on your own phone: 2 wks; Between test builds on your own phone
Typical timeline for a first release: 12–20 wks; Typical timeline for a first release

iOS

Your order is on its way

Android

iOS & Android apps · illustration

iPhone and iPad appsAndroid appsNative performanceOffline supportAccounts and paymentsPush notificationsApp Store launchAnalyticsiPhone and iPad appsAndroid appsNative performanceOffline supportAccounts and paymentsPush notificationsApp Store launchAnalytics

Sound familiar?

The problems we hear most often before someone asks us about iOS & Android apps.

Downloaded, opened once, deleted

Apps that try to do everything end up doing nothing well, and users don't come back.

Two apps, double the cost

Building separately for iOS and Android doubles the work and the bugs, unless there's a real reason to.

Launch day surprises

Rejected store submissions, crashes on older phones and missing analytics turn launch into firefighting.

What's included

Product discovery

We define the core jobs, the must-have features for launch and what can wait.

App design

Native-feeling UI for both platforms, prototyped and tested before development.

Development

Cross-platform or native code, chosen for your needs, with clean architecture that scales.

Backend and APIs

Accounts, data, payments and integrations built securely, or connected to your existing systems.

Testing on real devices

Old and new phones, different screen sizes and poor connections, before users find the problems.

Store launch

Store listings, screenshots, review guidelines and submission handled for both stores.

How we do it

01/ 04

You follow every step live in Mission Control, your project dashboard: tasks, files, approvals and a launch forecast.

1
Discover
Users, goals and the smallest set of features that makes the app genuinely useful.
2
Design and prototype
Screens and a clickable prototype, tested with users before we build.
3
Build in sprints
Two-week sprints with a test build on your phone after each one.
4
Launch and learn
Store submission, monitoring and analytics, then improvements based on real usage.

Platforms from one project: iOS and Android

2 wks

Between test builds on your own phone

12–20 wks

Typical timeline for a first release

Built for

Who this is for.

Startups building their first app

Businesses adding an app for loyal customers

Companies replacing an outdated app

Teams turning an internal process into an app

Tools we useReact NativeExpoSwiftKotlinNode.jsPostgreSQLFirebaseStripe

Helpful extras

Try it yourself, or see what's built in.

Built in · AILaunch Probability ConeNot a deadline. A probability.See how it works

Built in · AIGhost UsersFive AI customers test every build before you do.See how it works

Questions

iOS & Android apps, answered.

Something else on your mind? Ask the Zelvorm Concierge in the corner, or talk to the team.

It depends on features, platforms, integrations and the backend. After discovery we give a fixed quote for the first release. Our guide to mobile app costs explains the main drivers.