ZSWatch
ZSWatch Companion
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Connect your Open Source ZSWatch smartwatch to set it up, update firmware, track health data and more.
ZSWatch is the official companion app for the ZSWatch open-source smartwatch. Connect over Bluetooth to unlock everything your DIY smartwatch can do.
FEATURES
• Voice Memos with AI
Record voice memos on your watch. The app syncs them in the background, transcribes them and writes a summary. It can turn what you said into reminders and calendar events. Run it on your iPhone with on-device models, or use your own OpenRouter key.
• Ask from Your Wrist
Ask a question on your watch and get the answer back on your wrist.
• Always Connected
The connection runs in the background, reconnects on its own, and keeps your watch in sync even when the app is closed.
• Notifications
Your iPhone's notifications appear on your watch.
• Firmware Updates
Update your watch firmware over Bluetooth. Download official releases from GitHub or load local firmware files. Resource updates for watch faces and images are included.
• Custom Watch Faces
Pick a photo to use as your watch face background.
• Weather and GPS
Your watch gets current weather and a forecast for your location. Share your iPhone's location with your watch for workouts and outdoor activities.
• Internet Relay
Lets watch apps fetch information from the internet through your iPhone.
• Health & Activity
View daily steps, heart rate and activity history in charts.
• Battery Analytics
Monitor your watch's battery level and charging over time.
• Guided Setup
Pair with Apple's accessory setup.
• Developer Tools
A shell on the watch, BLE communication logs, sensor data, device diagnostics, and crash reports you can download and attach to a GitHub issue.
REQUIREMENTS
• ZSWatch smartwatch (github.com/ZSWatch/ZSWatch)
OPEN SOURCE
The ZSWatch app is open source. View the code, report issues and contribute at github.com/ZSWatch/ZSWatch-App
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
ZSWatch 1.2 is a big update for the open-source smartwatch.
• Voice memos: record on the watch, then get a transcript, a summary and actions such as timers, alarms, reminders and calendar events. Run it on your phone or with your own OpenRouter key.
• Chat: ask questions from your watch and get the answer on your wrist.
• A rewritten connection that stays up in the background and comes back after the app has been closed.
• Faster and more reliable firmware updates, including resources and watchface backgrounds.
• A new permission setup after your first connection, with a clear explanation of each permission.
• Many fixes and stability improvements.
The developer, Jakob Krantz, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jakob Krantz
- Size
- 76.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 14.0 or later.
- iPhone
Requires iOS 14.0 or later. - iPod touch
Requires iOS 14.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 ZSWatch Project