Wearable app development for apps people glance at, not fight with.
Hoop Interactive builds Apple Watch and Wear OS apps together with the companion mobile app, health data integrations and back end that make them useful. Designed for two-second interactions, all-day battery and data users trust you with.
The watch is the display. The phone and cloud do the work.
The most expensive wearable mistake is designing the watch screens in detail and treating the companion app as an afterthought. Small screens, small batteries and short glances mean the architecture behind the watch matters most.
Our approach: watch app, companion app and back end designed as one product, from one team.
- Glances, not sessions
- Most interactions last a few seconds, so every screen has one clear job.
- Battery is the budget
- Sensors, networking and screen-on time are rationed so the watch lasts the day.
- Sync without surprises
- Watch, phone and cloud stay consistent even when connectivity drops.
- Permissions that build trust
- Health data is requested only when needed, with a clear reason why.
Wearable apps we build.
Wearable app development services for consumer products, health and wellness brands and field teams.
Apple Watch app development
watchOS apps in SwiftUI with complications, notifications and Siri shortcuts.
Wear OS app development
Wear OS apps in Compose with Tiles and complications for Android watches.
Fitness & health tracker apps
Activity, sleep, heart rate and habit tracking with HealthKit and Health Connect.
Companion mobile apps
iOS and Android companion apps in Flutter, sharing one codebase.
Custom wearable device apps
Apps that pair with your own hardware over Bluetooth Low Energy.
Enterprise & field wearables
Hands-free alerts, check-ins and task updates for field and warehouse teams.
Wrist notifications & quick actions
Actionable notifications that let users reply, confirm or log from the wrist.
Wearable data back ends
APIs, storage and dashboards for coaches, clinicians or operations teams.
Apple Watch, Wear OS, or something else?
Each platform has different tools, health APIs and audiences. Some listed by other vendors no longer exist.
| Platform | Built with | Health data | Our take |
|---|---|---|---|
| Apple Watch | watchOS, SwiftUI | HealthKit | Usually the first platform to launch on |
| Wear OS | Kotlin, Compose for Wear OS | Health Connect, Health Services | Add when you have Android users |
| Garmin | Connect IQ, Monkey C | Garmin Health API | Case by case for sports products |
| Fitbit & trackers | Vendor APIs and cloud sync | Read via phone or cloud APIs | Integrate their data rather than build on them |
| Custom devices | Bluetooth LE + mobile app | Your own data model | When your hardware is the product |
What makes a wearable app worth keeping.
Users uninstall watch apps that drain battery or need too many taps. These are the rules we design by.
- 01
Two-second interactions
The most important information visible at a glance, with one tap for the main action.
- 02
Battery-aware engineering
Sensor sampling, background refresh and network calls kept to what the feature needs.
- 03
Complications & Tiles
Your app on the watch face, where users see it dozens of times a day.
- 04
Reliable sync
Watch, phone and cloud stay in step, with offline logging that syncs later.
- 05
Respectful notifications
Fewer, more useful alerts with actions built in, so users don’t mute your app.
- 06
Accessible on small screens
Large tap targets, dynamic type, VoiceOver and TalkBack support.
Health data is personal. We treat it that way.
Wearables collect some of the most sensitive data people share. Getting consent, storage and claims right protects your users and your app store listing.
- HealthKit and Health Connect
- Platform-standard health data access, with only the data types your features need.
- Clear, timely consent
- Permission asked at the moment it makes sense, with a plain explanation.
- Encrypted and minimised
- Encryption in transit and at rest, minimal retention and easy data deletion.
- HIPAA-ready when needed
- Safeguards and business associate agreements for apps used by healthcare providers.
The kind of phone app a watch app extends.
QalbSync needed a habit-tracking app with weekly, monthly and yearly progress views. Daily tracking apps like this are exactly where a glanceable watch companion adds value.
FLUTTER · TRACKING · ASO
4 core tracking modules in one Flutter app
We designed the visual identity, built it in Flutter from one codebase and handled app store optimization.
Read the case studyHow we differ from a typical wearable app development company.
Some wearable pages still list Tizen, Android Wear and Google Glass. Here's what you get with us.
| What matters | Typical wearable vendor | Hoop Interactive |
|---|---|---|
| Platforms | Long lists including retired ones. | Current watchOS and Wear OS, chosen by your audience. |
| Companion app | An afterthought. | Designed with the watch app from day one. |
| Health data | Older Google Fit integrations. | HealthKit and Health Connect, permission-minimal. |
| Battery | Tested on the desk. | All-day wear testing on real devices. |
| Back end | Separate vendor. | API, data and dashboards from the same team. |
| Launch | Store submission only. | App store optimization and marketing support. |
From idea to the wrist.
Watch, phone and back end planned together from the first week.
Discovery
Users, platforms, health data needs, and the one glance the watch must get right.
Week 1 · Platform plan & fixed quoteWrist-first design
Watch screens, complications and companion flows prototyped on real devices.
Weeks 2–4 · Device prototypesCompanion & back end
Sign-up, settings, sync and APIs built so the watch has data to show.
Weeks 3–8 · Working companion appWatch app
Native watchOS or Wear OS app, health integrations and notifications.
Weeks 5–12 · Test builds on your wristAll-day testing & launch
Battery, sync and accessibility testing, then App Store and Play submission.
Final sprint · Live appsGrow
Engagement tracking, new complications and features, and store optimization.
Ongoing · Monthly reportOur toolkit.
Native watch platforms, cross-platform companions and the back end behind them.
Flutter
Swift
Kotlin
FastAPI
Node.js
Supabase
Firebase Cloud MessagingWhat wearable app development costs with Hoop.
Fixed quotes after discovery. Prices are in USD. App store developer accounts, hosting and test devices are billed to your own accounts.
- Investment
- from $8,000
- Timeline
- 4–8 weeks
- Build
- Apple Watch or Wear OS app
- Included
- Complication or Tile, sync
- Also
- Actionable notifications, submission
- Investment
- from $20,000
- Timeline
- 10–16 weeks
- Build
- Watch app on one platform
- Included
- Flutter companion app
- Also
- HealthKit/Health Connect, back end
- Investment
- from $35,000
- Timeline
- Phased
- Build
- Apple Watch and Wear OS
- Included
- Custom BLE device support
- Also
- Dashboards, HIPAA-ready architecture
Where wearable apps earn their place.
Situations where a glance beats pulling out a phone.
Fitness & coaching
Workouts, goals and coaching cues on the wrist.
Habits & wellness
Quick logging, reminders and streaks people keep up.
Healthcare
Remote monitoring and care plans, with the right safeguards.
Field & warehouse teams
Hands-free job alerts, check-ins and safety prompts.
Insurance & rewards
Activity-based rewards programmes with consent built in.
Consumer devices
Companion apps for rings, bands and custom wearables.
Explore more Software Development services.
Wearable app development pairs naturally with these services from Hoop Interactive.
Mobile Apps
The broader practice this service sits under.
ExploreiOS Apps
Native iPhone development behind companion apps.
ExploreAndroid Apps
Native Android development behind companion apps.
ExploreFlutter Development
One codebase for the iOS and Android companion app.
ExploreIoT Development
For apps that pair with your own custom hardware.
ExploreReact Native
An alternative cross-platform companion app stack.
ExploreMVP Development
For a first wearable product built lean.
ExploreApp Store Optimization
Discoverability once your wearable app ships.
ExploreWearable app development questions
About our wearable app development services. Ask us anything else.
Adding an Apple Watch or Wear OS app to an existing mobile app starts from $8,000. A new wearable product with a watch app and companion mobile app starts from $20,000, and health or custom Bluetooth device platforms from $35,000.
Follow your users. In the US, Apple Watch usually reaches the most people first. If your mobile app has a large Android audience, add Wear OS next. We often launch on one platform, learn, then add the second.
The companion phone app can share one Flutter codebase, but watch apps work best built natively, in SwiftUI for watchOS and Compose for Wear OS. Shared logic lives in the back end and phone app, so the watch code stays small.
Almost always. The phone app handles sign-up, settings, history and syncing, while the watch shows glanceable information and quick actions. We design both together so they feel like one product.
Yes, with the user’s permission. On iPhone and Apple Watch we use HealthKit, and on Android we use Health Connect, which is replacing the older Google Fit APIs. We only request the data types the app genuinely needs.
It can be. Wellness apps have lighter rules, but apps used by healthcare providers may need HIPAA safeguards, and apps that diagnose or treat conditions may be regulated as medical device software. We design for privacy and recommend confirming requirements with specialist counsel.
Yes. We build mobile apps that pair with custom devices over Bluetooth Low Energy, plus the cloud back end and dashboards, working with your firmware team on the device protocol.
A watch extension for an existing app usually takes 4 to 8 weeks. A new wearable product with a companion app takes 10 to 16 weeks, and custom hardware or health platforms longer.
You do. Code, app store accounts and user data are in your ownership.