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Mobile apps

Native iOS and Android app development

We build native iOS and Android apps for your customers or your field teams, prototyped first and connected to your backend, with offline mode when the work needs it.

Get a proposal

Projects: fixed price after a free discovery call. Ongoing plans from $249/month. See plans and prices →

A designer sketches an app's screens on paper with a marker
Who it's for

Is it for you?

What's included

What we build with you

01

Native iOS and Android apps

Swift and Kotlin, with the feel each platform's users expect.

02

Works offline

Data saved on the phone and synced when the signal returns.

03

Notifications and device features

Alerts, camera, GPS, barcode scanning or signatures, as the work needs.

04

Store publishing

We prepare both store listings and see the app through review.

TechnologiesSwiftKotliniOSAndroidREST APIsWebhooksNode.jsPython / FlaskPostgreSQLCI/CD
Example code
// saved on the phone first, // sent when there is signal export async function saveJob(job) { await local.jobs.put(job) if (await isOnline()) await syncPending() }
How we work

How we run your project

01

Discovery (free)

We define users, key tasks and offline needs, then put a fixed price in writing. Nothing is billed until you approve it.

02

Design

Test the key screens on your phone before any code is written.

03

Build

Two-week sprints with a live demo and test builds for your device.

04

Launch

We publish to the stores, train your team and watch for crashes.

Brands we've worked for

  • Adobe
  • Nike
  • Bank of America
  • Cotopaxi
  • Thumbtack
  • H-E-B
  • GIANT
  • CGuard Pro
  • Fresh Feel Cleaning

Our team has worked with these brands. Logos belong to their respective owners.

FAQ

Questions about mobile apps

Should I build a native app or a cross-platform app?

Native apps (Swift for iOS, Kotlin for Android) get the most from the camera, GPS, offline storage and speed. Cross-platform can be fine for simple, content-driven apps. We help you choose during discovery.

How much does it cost to develop a mobile app?

It depends on screens, user types, offline mode, device features and whether you need iOS, Android or both. We put a fixed price in writing after a free discovery call, and you pay nothing before approving it. Updates after launch can run on monthly plans from $249.

Can a mobile app work without an internet connection?

Yes. The app stores data on the phone, lets people keep working and syncs once the signal returns. It has to be designed in from the start, so we decide it in discovery.

Let's talk

Get a proposal

Tell us what you need. Discovery is free, and you get a fixed price before any work starts.

Optional. If you'd rather we call you.

A person on the team reads it and replies within one business day (Monday to Friday, 9am–6pm Central Time). Or write to us at hello@devonauts.com

Already a client? Get help in your portal