Wearable apps that sync seamlessly with your product
We build apps for Apple Watch, Wear OS, and IoT devices - watch complications, health data sync, and companion experiences that extend your main product to the wrist and beyond.
Trusted by companies that ship production software on deadline
Everything you need, nothing you don't
We scope each engagement precisely so you get senior-level work on the capabilities that matter.
Watch complications
Glanceable data on the watch face - timers, metrics, and shortcuts that keep your app visible without opening it.
Health data sync
Bidirectional sync with HealthKit and Google Fit - steps, heart rate, workouts, and sleep data flowing securely between devices.
Bluetooth LE
Low-energy pairing with fitness trackers, medical devices, and IoT sensors - reliable connections that preserve battery life.
Companion apps
Phone apps that configure, monitor, and visualize data from the wearable - a unified experience across wrist and pocket.
Sensor integration
Accelerometer, gyroscope, heart rate, and GPS data processed on-device for real-time feedback and offline resilience.
Battery optimization
Efficient background tasks, batch sync, and minimal wake cycles so users wear your app all day without draining their watch.
From wrist prototype to App Store launch
We ship watchOS and Wear OS builds alongside your companion app every sprint - so you test the full device ecosystem before launch.
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Week 1: Device UX & data model
We design glanceable watch interfaces, define health data schemas, and plan Bluetooth pairing flows with your companion app.
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Weeks 2-10: Wearable & companion development
Complications, health sync, and sensor features ship in weekly TestFlight and internal builds on real watches and phones.
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Launch: Store submission & device testing
We submit watch apps to App Store and Play Store, run battery profiling, and monitor crash reports across device generations.
Renting is local, so search had to understand a place and a date range as one question rather than two filters. Mirimera built the marketplace and the software our suppliers run on, and because it is one system underneath, nothing has ever had to be kept in sync.
- Pablo
CEO, Big RentalsThe stack behind production wearable apps
Platform-native watch frameworks and health APIs - built for tight battery budgets and reliable background sync.
WatchOS
Apple's watchOS SDK for complications, workout sessions, and HealthKit integration on Apple Watch.
Wear OS
Google's platform for Android smartwatches with Tiles, complications, and health services APIs.
HealthKit
Apple's health and fitness data framework for secure read/write access to user wellness metrics.
Bluetooth LE SDK
Core Bluetooth and Android BLE APIs for pairing, GATT communication, and background reconnection.
Core Motion
Apple's motion and fitness framework for accelerometer, pedometer, and activity classification data.
- Fit
Google Fit
Google's health platform for aggregating fitness data from watches, phones, and third-party apps.
Ready to extend your app to wearables?
Book a free 30-minute call. We'll scope your watch experience, plan health data flows, and tell you honestly if we're the right fit.