Mobile App Development Company
Avenva is a mobile app development company that builds cross-platform iOS and Android 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.
- You own the code
- Fixed price before work starts
- Reply within one business day
22%
Fewer missed appointments (Thornridge Health)
98%
Client retention
24hr
Average response time
Mobile app development services for iOS and Android
Not sure what you need yet?
Tell us the problem on a free call. We will suggest what to build first and what can wait.
Book a free callCross-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.
When to hire an app development company
If one of these sounds familiar, that is usually the moment we get the call.
Talk it throughYou'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 point where a native app is worth the extra 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, so it's worth flagging early if that's your case.
How we run this engagement
Product scoping
Define MVP scope, platforms, and release milestones.
UI/UX design
Platform-aware interfaces that respect iOS and Android conventions.
Development
Sprints with TestFlight / internal track builds for continuous testing.
Launch & support
Store submission, crash monitoring, and post-launch iteration.
How pricing works
Step 1
Free call
Tell us what you need. We ask questions and suggest what to build first.
Step 2
Written scope
You get every feature of the first version listed in writing.
Step 3
Fixed price
One price for that scope, agreed before any work begins.
Step 4
Build and launch
You see progress as we build, then we launch and stay on for support.
A mobile app MVP starts from
$1,200
The final price depends on the features you need. The calculator gives you a realistic range in a couple of minutes.
Included in every project
- Code and accounts in your name
- Testing before launch
- Support after launch
How working with us compares
Who you talk to
Avenva Solutions: The engineers building it
- Typical agency:
- Usually an account manager
- Freelancer:
- One developer
How you pay
Avenva Solutions: A fixed price, in writing, before work starts
- Typical agency:
- Often hourly or open ended
- Freelancer:
- Usually hourly
Who owns the code
Avenva Solutions: You, from day one
- Typical agency:
- Depends on the contract
- Freelancer:
- Depends on the person
Skills on the project
Avenva Solutions: Design, build, testing, launch, and support
- Typical agency:
- A full team
- Freelancer:
- One person's skills
After launch
Avenva Solutions: We stay on for fixes and updates
- Typical agency:
- Often a separate support contract
- Freelancer:
- Depends on their availability
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.
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.”
Elena Ruiz
Clinical Director, Thornridge Health
Related insights
Questions to ask a mobile software development company
Can't find what you're looking for? Reach out and we'll answer directly.
Native (Swift/Kotlin) or cross-platform: which do we actually need?
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.
How long does app store approval actually take?
Apple typically reviews within one to three days, Google within a few hours to a couple of days. But first submissions get rejected more often than people expect, usually over privacy disclosures or incomplete metadata. We budget time for at least one resubmission round.
Can you take over an app another developer started?
Yes. We start with a codebase audit to see what's actually reusable versus what would take longer to untangle than to rebuild, and we'll give you that assessment before quoting anything.
What does post-launch support look like?
Crash monitoring, OS-update compatibility (a new iOS or Android release can break things you didn't touch), and iterative features. Apps need more ongoing upkeep than most people expect, mainly because the platforms themselves keep changing under you.
How much does a typical app cost to build?
A focused MVP usually lands in the tens of thousands depending on feature count and integrations. We scope a firm number during discovery rather than quoting off a first conversation.
Is Avenva an app development company in the US?
Yes. Avenva is an app development company in the US, based in Bakersfield, California, and works with clients across the United States.
Do you build both iOS and Android apps?
Yes. Most apps we build ship to both from one React Native codebase, so you get an iPhone app and an Android app without paying for two separate teams. When a feature needs native iOS (Swift) or Android (Kotlin) code, we write that module natively and keep the rest shared.
