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Wearable App Development Services
Apps for Apple Watch, Wear OS and Garmin watches, connected to health data and your phone app.
Stack we work in
- SwiftUI
- Swift
- Kotlin
- Jetpack Compose
- Flutter
- React Native
- Firebase
- Node.js
- Projects delivered
- 680+
- Clients served
- 310+
- Client retention
- 98%
- Certified engineers
- 20+
- Building since
- 2018
Figures as of Oct 2026
Trusted by
- Aralia
- Rosa Pistrina
- Lashbo
- Micromunchi
- Payroll Ninja
- POD
- Petdx
- Yokey
- Spin Up
- Starwear
- Udlins
- Vegpal
- Wander Wings
- Wish It
- Wisl
Who we build wearable apps for
Wearable apps put your product on the user's wrist: quick glances, reminders, workout tracking and health readings without taking out a phone.
Read the full overview
We build watch apps for Apple Watch (watchOS), Wear OS and Garmin (Connect IQ), and the phone and cloud side that goes with them. We connect to health and fitness data through Apple HealthKit, Android Health Connect and device vendor APIs, with user consent and privacy built in from the start.
Fitness and wellness brands
Workout tracking, coaching and progress on the wrist.
Learn moreDigital health companies
Remote monitoring, medication reminders and symptom logging with consent.
Learn morePhone apps that need a watch companion
Quick actions, notifications and complications for an existing app.
Connected device makers
Watch control and data views for your hardware.
Learn more
Outcomes
What you get
- Your product available on the wrist, not only the phone
- Health and activity data collected reliably, with user consent
- Watch apps that respect battery life and small screens
- One data model across Apple, Android and Garmin devices
- Code, data and store accounts owned by you
What we deliver
Wearable features we build
Workout and activity tracking
Live metrics, laps and routes, saved to HealthKit or Health Connect.
Remote patient monitoring
Heart rate, activity and sleep trends shared with care teams.
Reminders and check-ins
Medication, hydration, mood and task reminders with one-tap responses.
Field worker alerts
Hands-free alerts, safety check-ins and quick status updates.
Payments and access
Tickets, passes and quick actions from the wrist.
What you receive
Watch apps
Native watchOS, Wear OS or Garmin apps published to their stores.
Companion phone app
A new phone app or updates to your existing one, with sync to the watch.
Health data integration
HealthKit and Health Connect integration with consent flows.
Backend and dashboards
Cloud sync, user accounts and dashboards for your team or care providers.
Apple Watch apps
Native watchOS apps in SwiftUI.
- Standalone and companion watchOS apps
- Complications and Smart Stack widgets with WidgetKit
- Workout sessions, heart rate and activity through HealthKit
- Notifications, Live Activities and quick actions
- Phone and watch sync with WatchConnectivity
Built with
- watchOS
- SwiftUI
- WidgetKit
- HealthKit
- WatchConnectivity
Wear OS apps
Native apps for Android watches.
- Wear OS apps built with Compose for Wear OS
- Tiles and complications for at-a-glance information
- Sensor and exercise data through Health Services
- Phone and watch sync with the Wearable Data Layer API
- Watch faces with Watch Face Format
Built with
- Wear OS
- Compose for Wear OS
- Health Services
- Wearable Data Layer API
- Watch Face Format
Garmin and other devices
Reach users on fitness-focused devices.
- Garmin Connect IQ apps, data fields and widgets in Monkey C
- Garmin Health API and Connect Developer Program integrations
- BLE heart rate straps, rings and medical sensors
- Samsung Health Data SDK integration on Galaxy devices
Built with
- Garmin Connect IQ
- Monkey C
- Garmin Health API
- Samsung Health Data SDK
Health data platforms
Read and write health data with consent.
- Apple HealthKit for steps, sleep, heart rate, workouts and more
- Android Health Connect as the shared health data store on Android
- Consent screens, permission handling and data minimization
- Health data dashboards and trends in the phone app
Built with
- HealthKit
- Health Connect
Backend, analytics and support
Everything behind the watch app.
- Cloud sync, user accounts and coaching or care-team portals
- Analytics and alerts on activity and vital sign trends
- Battery, performance and real-device testing
- Updates for new watchOS, Wear OS and Garmin releases
Built with
- watchOS
- Wear OS
Why teams choose Equitysoft for wearable apps
Since 2018 we have delivered 680+ projects for 310+ clients, and 98% of clients keep working with us.
Apple Watch, Wear OS and Garmin
We build watch apps for each platform and the phone apps and backend that support them.
Designed for a small screen
We design glanceable screens, complications and short interactions, and prototype them on real watches.
Health data handled carefully
We work with HealthKit and Health Connect, ask only for the data you need, and keep it encrypted.
Your apps and data
You own the apps, the store listings and the data, and we support the apps through each watchOS and Wear OS update.
Recent work from our team
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How we work
Discovery
We agree which watches to support, what users should do on the wrist and which health data you need.
You receive Device and feature plan
UX for small screens
Glanceable screens, complications and tiles designed for a few seconds of use.
You receive Watch UX prototypes
Prototype on real devices
Sensors, sync and health permissions tested on real watches early.
You receive Working device prototype
Build
Watch, phone and backend built in short iterations with regular demos.
You receive Test builds each iteration
Test and release
Battery, accuracy and connectivity testing, then App Store, Google Play and Connect IQ Store releases.
You receive Apps live in the stores
Support
OS updates, new devices and features, with crash and usage monitoring.
You receive Support plan
Tech stack
Technologies we use
Databases
Mobile
Backend and APIs
Languages
Cloud and DevOps
AWS
Other tools
Engagement
Ways to work with us
Fixed-scope project
A watch app or full wearable product built against an agreed scope, timeline and price.
- Written estimate up front
- Demos every iteration
Dedicated team
Wearable, mobile and backend developers who join your team full time or part time.
- Scale up or down with notice
- Works in your tools and process
Audit or pilot
A short paid review or pilot that answers the key questions before you commit to a full build.
- Clear findings and plan
- No obligation to continue
Questions, answered
It depends on the platforms, the health data involved, whether the watch app works on its own or with a phone app, and the backend. We send a written estimate after a short call. As a guide, a companion watch app for an existing phone app usually costs $10,000 to $30,000, and a new phone and watch product on Apple and Android with a backend $40,000 to $120,000 or more (USD).
Usually the one your users own. In the US and UK, Apple Watch is often first; Wear OS reaches Samsung Galaxy Watch and Pixel Watch users; Garmin matters for runners, cyclists and outdoor users. We can review your audience data and recommend an order.
Yes. Apple Watch and Wear OS apps can run on their own, with Wi-Fi or cellular on supported models. Many products use both: the watch for quick actions and tracking, the phone for setup and history.
Google has replaced the Google Fit APIs with Health Connect, which is now the standard way to read and write health data on Android. We build new apps on Health Connect and migrate older Google Fit integrations.
Yes, where the vendor provides an API or SDK. We integrate Garmin through Connect IQ and the Garmin Health API, and other devices through their official APIs or Bluetooth Low Energy.
Users choose which data to share, and we only request what the feature needs. Data is encrypted in transit and at rest, and we document data flows for your privacy policy and app store privacy labels. We design for HIPAA or GDPR where they apply.
The phone app can be built in Flutter or React Native, but watch apps are best built natively in SwiftUI for watchOS and Compose for Wear OS. We connect them to your cross-platform phone app.
Yes. Examples include activity recognition, sleep and recovery insights and anomaly alerts. Some run on the device, others in the cloud.
A companion watch app often takes 6 to 10 weeks. A new phone and watch product with a backend usually takes 4 to 7 months.
You do. Source code, store accounts, cloud resources and the data collected are yours.
We start with a short discovery call under NDA if you need one. Send us your idea, any designs or documents, and the systems the work must connect to. We then share a written scope, timeline and estimate before any build work starts.
Yes. We update the apps for each watchOS and Wear OS release, fix issues and add features.
Planning an app for Apple Watch, Wear OS or Garmin?
Book a call with our wearables team. We will review your product and users and suggest devices, data and next steps.