Bitbrand — Mobile App (React Native) + Watch App (Swift)
Cross-platform product built with React Native and a native Apple Watch companion. Includes real-time dashboards, creator tools, and a seamless multi-device experience.
Apple Watch App Development
Apple Watch apps are their own discipline: tiny screens, glanceable interactions, strict battery budgets and a review process that is less forgiving than iPhone. It is also where I have the most experience. I have published 15 standalone Watch apps on the App Store, across sport, music, fitness and games, and I build companion Watch apps for client products too.
What’s included
What you get
- Standalone watchOS apps Apps that run on the Watch alone, with no iPhone nearby.
- iPhone companions Watch apps that sync with your iPhone app and stay useful offline.
- Complications & widgets Your data on the watch face, one glance away.
- HealthKit & workouts Heart rate, calories and workout sessions, handled properly.
- Haptics & audio Feedback on the wrist, so users don’t need to look at the screen.
- Battery-aware design Efficient updates and background work that respect the battery.
Process
How it works
- 01
Glance test
We define the two or three things the wrist must do in seconds.
- 02
Prototype
An early build on a real Watch, because the simulator lies.
- 03
Build
SwiftUI for watchOS, sync, complications and haptics.
- 04
Release
Watch-specific App Store assets and review, then updates.
Proof
Related work
Padel Score for Watch
Game. Set. Match.
Apple Watch · $2.99
Tuner Pro for Watch
Guitar, Bass, Ukulele, Strings
Apple Watch · $1.99
HIIT & Tabata Timer for Watch
Circuit Training Fat Burn
Apple Watch · $3.99
FAQ
Common questions
Something else? Ask me directly .
Can an Apple Watch app work without an iPhone?
Yes. Since watchOS 6, apps can be standalone: installed, bought and used on the Watch alone. Most of my own apps work this way. An iPhone is only needed once, to set up the Watch.
Do I need an iPhone app to have an Apple Watch app?
No. A standalone Watch app can be published on its own. If you already have an iPhone app, a companion Watch app is often the fastest way to add value for existing users.
What makes Watch development different from iPhone?
Interactions last seconds, the screen is tiny, and battery and background time are tightly limited. Designs that work on iPhone usually fail on the wrist, so the Watch app needs its own design rather than a shrunk copy.
Can you add a Watch app to my React Native app?
Yes. The Watch app is written natively in Swift and talks to your React Native iPhone app through WatchConnectivity. I built exactly this for Bitbrand.
How do you test Apple Watch apps?
On real devices, across sizes and watchOS versions. The simulator does not reproduce haptics, sensors, battery or real-world timing, so it is only a starting point.
Other services
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