Pressure and altitude. Beautifully clear.
Barometer turns the built-in sensors on your iPhone, iPad and Apple Watch into a clear view of the conditions around you. Check a reading at a glance, follow pressure changes, or explore your altitude as you climb.
PRESSURE, IN PERSPECTIVE
• Atmospheric and estimated sea-level pressure
• Pressure history, trends and changes over time
• A pressure-based weather outlook
• Optional pressure-change notifications
A CLEARER VIEW OF ALTITUDE
• Altitude readings and elevation charts
• Calibration using a known altitude or available sensor references
• Ascent, descent and elevation range
• Latitude and longitude
• Estimated boiling point of water at the current pressure
MADE FOR YOUR DEVICES
• A dedicated Apple Watch app
• Watch complications and iPhone widgets
• Siri and Shortcuts support
• Control Center shortcuts
• Your choice of measurement units
• CSV export for saved measurements
Core pressure and altitude measurements work offline using your device’s sensors. Location access enables additional information, including estimated sea-level pressure.
Requires iOS 26, iPadOS 26 or watchOS 26. Available readings depend on your device’s sensors and permissions. Pressure-based weather information is an estimate, not an official forecast.
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
A more reliable reading, at a glance.
• Improved background measurement handling and widget refresh on Apple Watch and iPhone.
• Widgets retain the last available reading and clearly indicate when it needs updating.
• More reliable sensor recovery when returning to the app.
• Improved altitude calibration and sea-level pressure calculations.
• Fixed notification settings being changed by delayed permission responses.
• Improved measurement history deletion and CSV export error handling.
Now requires iOS 26, iPadOS 26 or watchOS 26.
Version 1.4.0
The developer, Bangyan Chu, 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.
Privacy practices may vary based, for example, on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
VoiceOver
Larger Text
Dark Interface
Differentiate Without Colour Alone
Sufficient Contrast
Information
Provider
Bangyan Chu
Size
8.1 MB
Category
Weather
Compatibility
Requires iOS 26.0 or later.
iPhone Requires iOS 26.0 or later.
iPad Requires iPadOS 26.0 or later.
Apple Vision Requires visionOS 26.0 or later.
Apple Watch Requires watchOS 26.0 or later.
Location
This app may use your location even when it is not open, which can decrease device battery life.