Mobile App Development

We build cross-platform mobile apps that feel native, ship fast, and scale with your user base — from MVP to App Store launch and beyond.

This is the same offline-first discipline behind Thornridge Health's patient scheduling app — if you're building for a regulated space, see how we approach healthcare software development specifically.

22%

Fewer missed appointments (Thornridge Health)

98%

Client retention

24hr

Average response time

Why Avenva

What sets working with us apart

You own the code

No proprietary lock-in — the repository, infrastructure, and IP are yours from day one.

No vendor lock-in

Standard, well-documented stacks, so your next team (or ours) can extend it without a rewrite.

One team, start to finish

The same engineers scope, build, and support your project — no hand-offs between sales and delivery.

Direct access to engineers

You talk to the people writing the code, not an account manager relaying messages.

Fixed-scope, transparent pricing

Clear estimates before work starts, and no surprise change orders for work that was always in scope.

Support after launch

Launch day isn't the finish line — we stay on for monitoring, fixes, and iteration.

What's included

What we deliver

Cross-platform builds

One React Native / Expo codebase shipped natively to iOS and Android, so you're not funding two separate teams to maintain feature parity.

Native modules & integrations

Push notifications, biometrics, payments, camera, and other device-level APIs — the parts that actually break in cross-platform apps if they're not handled properly.

Offline-first architecture

Local-first data sync so the app keeps working on a spotty connection instead of showing a blank screen the moment signal drops.

App Store & Play Store launch

We handle submission, compliance review, and release management end to end, including the rejection-and-resubmit cycle that catches first-time submitters off guard.

Is this you?

Where this actually pays off

You're validating an idea, not committing to a five-year build

An MVP scoped to the two or three features that actually test your hypothesis, built to extend later instead of thrown away once you learn something.

Your web product needs a real mobile presence

Push notifications, offline access, and camera/biometric integration are things a mobile web page can't do properly — that's usually the line where a native app earns its cost.

A previous app got stuck mid-build or abandoned by another team

We inherit React Native codebases regularly. Sometimes it's salvageable, sometimes a rebuild is faster than untangling it — we'll tell you honestly which one you're looking at.

You need iOS and Android without doubling the budget

Cross-platform makes sense for the large majority of apps. The exceptions are heavy graphics, AR, or deep native performance work — worth flagging early if that's your case.

Our approach

How we run this engagement

01

Product scoping

Define MVP scope, platforms, and release milestones.

02

UI/UX design

Platform-aware interfaces that respect iOS and Android conventions.

03

Development

Sprints with TestFlight / internal track builds for continuous testing.

04

Launch & support

Store submission, crash monitoring, and post-launch iteration.

Tech we use

Built on a proven, modern stack

React Native

One codebase shipping natively to iOS and Android instead of two parallel builds.

Expo

Faster iteration and over-the-air updates without waiting on app store review for every fix.

Swift

Native iOS performance and platform APIs when React Native alone isn't enough.

Kotlin

Native Android performance and platform APIs for the pieces that need it.

Firebase

Push notifications, auth, and realtime sync without standing up that infrastructure yourself.

GraphQL

Mobile clients fetch exactly the data they need, which matters on slower networks.

Proof

Work we've shipped like this

“Our staff don't even notice when a clinic's connection drops mid-appointment — the app just keeps working. That reliability is what we actually needed.”

ER

Elena Ruiz

Clinical Director, Thornridge Health

Questions

Things people ask before starting

Can't find what you're looking for? Reach out and we'll answer directly.

Cross-platform (React Native/Expo) covers the large majority of apps well and costs meaningfully less to build and maintain. We'd recommend fully native only for graphics-heavy, AR, or deep hardware-integration apps — and we'll say so upfront if that's your case rather than defaulting to whichever we'd prefer to build.