iOS · Android · Cross-platform
Mobile apps that rank in stores and retain users.
Native iOS (Swift), Android (Kotlin), and cross-platform (React Native, Flutter), one senior team covering UX, engineering, backend, release ops, and ASO.
- iOS + Androidboth stores, one senior team
- < 60dMVP to TestFlight
- < 50MBmedian binary size
- 4platforms, one team
Mobile app development is the design, engineering, and release management of software that ships through the App Store and Google Play, where store review, binary size, and crash rate are part of the product. Cubitrek covers all of it with one senior team: native Swift and Kotlin, React Native and Flutter, the backend behind them, release ops, and App Store Optimization. A great mobile app is the outcome of clean architecture, ruthless UX, disciplined release management, and a store presence that actually ranks. We deliver all four, on iOS, Android, React Native, or Flutter.
What we ship
Everything under one roof.
Native iOS & Android
Swift/SwiftUI and Kotlin/Jetpack Compose, for apps that demand platform-level fidelity.
Cross-platform
React Native and Flutter for teams that want one codebase on both stores.
Mobile UX
Research, flows, motion, and accessibility, designed for thumbs, not desktops.
Backend & APIs
Node, Python, Firebase, Supabase, backend infra that scales with your app.
Release & ASO
TestFlight, Play Internal, phased rollouts, and App Store Optimization for organic downloads.
Crash-free engineering
Sentry, Crashlytics, and automated E2E testing so releases ship clean.
AI in the loop
The agents that ship in every build.
The apps we ship arrive with AI baked into the product itself, plus agents inside the build pipeline so quality stays high as you add features.
In-app assistant
Natural-language support, search, or sales inside the app, built on your own content.
- Trigger
- User taps the assistant icon or asks a voice query.
- Output
- Answer plus deep links into the right screen or flow.
On-device personalizer
Ranks content, offers, and push notifications by user signals on the device.
- Trigger
- Runs on every session open and every key event.
- Output
- Personalized feed, offer, or CTA. No data leaves the device unless you choose.
Release QA agent
Runs UI smoke tests on iOS and Android emulators on every merge.
- Trigger
- Runs on every PR to main.
- Output
- Screenshots, crash reports, and a go or no-go verdict.
Store listing agent
Optimizes App Store and Play Store titles, keywords, and screenshots.
- Trigger
- Runs monthly and after every major release.
- Output
- A/B tested listing with higher tap-through and install rate.
AI in the product. AI in the build. That is the only honest way to ship mobile in 2026.
How we work
How the work actually runs.
- 01
Define
Product spec, user flows, and KPIs, written and signed off before we code.
- 02
Design
Prototypes your users can tap before engineering starts.
- 03
Build
2-week sprints with TestFlight/Internal builds every release.
- 04
Launch & grow
Store submission, ASO, post-launch maintenance, and iteration.
What good looks like
Representative outcomes.
Directional numbers from real programs. On the call we walk through the case studies behind them, method included.
- crash-free sessions we hold releases to
- 99.8%+crash-free sessions we hold releases to
- organic installs month-over-month
- +63%organic installs month-over-month
- crash rate ceiling before we ship an update
- < 0.2%crash rate ceiling before we ship an update
Who we serve
Categories we already know.
- Consumer
- Fintech
- Healthcare
- Education
- Real estate
- Marketplaces
What clients say
I was particularly impressed by their creative approach and attention to detail.
Videography & photography company · website, SEO + design
They delivered the project on time.
Watch retailer · Shopify store build
Cubitrek always had a positive mindset and was kind.
Personal training company · video + social media
Questions buyers ask us.
- Native when you need platform-level fidelity (camera, AR, hardware access). Cross-platform (React Native or Flutter) when speed to both stores and shared logic outweigh platform polish. We'll recommend honestly based on your product.
- Yes, App Store and Play Store setup, ASO, review responses, phased rollouts, and post-launch release ops.
- We build the backend too, Node, Python, Postgres, Firebase, or Supabase. Or integrate with your existing APIs.
- Yes, audits, performance fixes, rewrites, and incremental refactors are a big part of what we do.
- Yes, retainer-based post-launch care for crash monitoring, OS updates, and ongoing feature work.
Ready when you are
Ready to start mobile app development?
A 15-minute call. We map the goal, look at what exists, and come back with a scoped plan.