Fintech · BLE
BLE Contactless Payment SDK & Platform
Cross-platform SDKs for iOS, Android and Windows over a custom BLE GATT profile with ECDH + AES-256-GCM. 850+ terminals in three countries, 99.8% success, PCI DSS Level 1.
$ cd /services/mobile agent.ready · mobile
Mobile App Development
> App Downloads : 120 K+
> Avg Store Rating : 4 .8★
Apps that survive the commute, the basement Wi-Fi, the flaky LTE.
React Native (New Architecture) or Flutter or Compose Multiplatform
when time-to-store matters; Swift / SwiftUI or Kotlin / Jetpack Compose
when frame budgets and Apple Intelligence / Gemini Nano APIs do.
Fitness, banking, fleet, AR, visionOS — the ones with four-plus stars.
What we actually ship
Apps your users won't rage-quit. Cold-start measured on a two-year-old mid-tier Android, not an M-series simulator. 60 fps scroll on a list of a thousand items. Offline mode that handles a subway tunnel, not just a plane-mode screenshot.
Cross-platform with React Native (New Architecture: Fabric, TurboModules, Bridgeless), Flutter or Compose Multiplatform when one codebase makes sense; Swift / SwiftUI and Kotlin / Jetpack Compose when it doesn’t. BLE GATT, ARKit, ARCore Geospatial, WebRTC, HealthKit, Google Fit, on-device LLMs via Apple Foundation Models or Gemini Nano (AICore), Apple Tap to Pay on iPhone or Android Tap to Pay (NFC) for payments — whichever OS APIs the feature actually needs. CI/CD tight enough that a git push lands on your phone in under ten minutes.
How we run a mobile build
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Platform call — We pick native, React Native, Flutter or Compose Multiplatform against your timeline, team size and the OS APIs you’ll actually touch. There’s no religious answer.
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Design for thumbs — Mobile isn't 'the web, smaller'. One-handed reach, offline-first defaults with Yjs / Automerge for conflict-free sync, screens that survive a 3-second attention window.
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Performance is a feature — Cold-start budgets, scroll profiling, bundle size tracked per PR. We test on low-end devices and on visionOS where it matters, not just the flagship in the office drawer.
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Store-ready from week one — Fastlane, TestFlight, Play Console, feature flags and Crashlytics / Sentry / Bugsnag all wired before the first real build. Release day is uneventful on purpose.
What We Offer
Cross-Platform Apps
- + React Native (Fabric / TurboModules / Bridgeless)
- + Flutter & Compose Multiplatform (KMP)
- + Shared component libraries, expo SDK
Native iOS & visionOS
- + Swift, SwiftUI, Swift Concurrency
- + Apple Intelligence + Foundation Models, Core ML 8, MLX
- + HealthKit, ARKit, App Clips, visionOS / Vision Pro
Native Android
- + Kotlin, Jetpack Compose, KMP
- + Gemini Nano via AICore + ML Kit + MediaPipe
- + Material You, Google Fit, BLE GATT
Real-time, BLE,
AR & Sensors
- + WebRTC video, voice & data channels
- + BLE GATT profiles, NFC, ECDH, Apple/Android Tap to Pay
- + ARCore Geospatial, ARKit, Quest 3 + WebXR
App Store &
DevOps
- + Fastlane pipelines & signed binary automation
- + TestFlight, Play Console & staged rollouts
- + Push, Firebase, Crashlytics / Sentry / Bugsnag
How an app
makes it to the store
01 Platform &
Platform &
UX call
Week one: native vs React Native vs Flutter vs Compose Multiplatform, user journeys, offline contract, target device list. We don't start Xcode or Android Studio until this is written down.
02 Build &
Build &
dog-food
Weekly TestFlight and Play Console builds. Demo on real devices, not simulators. Your team uses it before anyone outside does.
03 Polish &
Polish &
performance
Cold start under two seconds, 60 fps on mid-tier, crash-free rate above 99.8% before submission. Battery profile + memory pressure measured, not eyeballed.
04 Launch &
Launch &
keep iterating
Store submission, staged rollout to 10% then 100%, crash monitoring hooked into Slack, and post-launch iteration on the feedback you actually get.
Got an app idea that keeps you up past midnight? Send us the brief
A few case studies where this work shows up.
We’ve shipped this before.
Five apps in production — fitness to fintech to fleet — shipped by this team.
The questions people actually ask.
If your question isn’t here, email us. We read everything that comes in.
Should we go cross-platform or native?
Depends on three things: timeline, team and which OS APIs you actually touch. React Native (with the New Architecture), Flutter or Compose Multiplatform is faster to both stores with one team. Native Swift / SwiftUI or Kotlin / Jetpack Compose wins when ARCore Geospatial, HealthKit, Apple Foundation Models, Gemini Nano or hard animation budgets are non-negotiable. We’ll give you the honest call, not the one that keeps us billing longer.
What drives the call:- 1. OS APIs and on-device AI your feature needs
- 2. Animation and performance budgets
- 3. Your team, timeline and ongoing maintenance plan
How long does a real app take?
An MVP is usually 8 to 12 weeks kickoff to store. Anything involving BLE, AR, real-time video or payments is 14 to 20. The proposal has a date on it — if we’re going to miss it, you hear in week two.
Typical milestones:- 1. Weeks 1-2: platform + UX, target device list
- 2. Weeks 3-8: core build, weekly TestFlight + Play
- 3. Weeks 9-12: polish, perf, store submission
Do you handle App Store and Play Store submission?
Yes. Screenshots, metadata, review-guideline compliance, staged rollout. We know which rejection reasons come up most and build around them from day one — not the night before submission.
What that covers:- 1. App Store Connect + Play Console setup
- 2. Review guideline pre-check before submission
- 3. Staged rollout with crash monitoring
Can you bolt mobile onto our existing web product?
Usually, yes. Either a native companion that shares your API and design tokens, or a React Native wrapper around parts of your web UI with native modules where the web falls short.
Common shapes:- 1. Native companion app sharing your backend
- 2. React Native wrapper with native modules
- 3. PWA with install prompts and offline cache
How do you handle offline-first?
Local-first storage, optimistic UI with retry, background sync with Yjs or Automerge for conflict-free merging — and a transactional fallback for monetary fields where last-write-wins is wrong. The app doesn’t just survive offline — it forgets whether it was online at all from the user’s perspective.
The offline stack:- 1. SQLite, Realm or Turso embedded on device
- 2. Background sync with Yjs / Automerge CRDTs
- 3. Transactional path for money/stock, optimistic UI for the rest
How do you price mobile projects?
Milestones, not hours. MVP, beta, store launch — each one with a fixed deliverable. You know what you’re paying for and you can stop after any milestone.
Engagement models:- 1. Fixed-scope MVP build
- 2. Monthly iteration retainer, exit any month
- 3. Embedded mobile engineer inside your team