HowHigh: Barometer & Altimeter

Live pressure & altitude logs

Free · Designed for iPad

Capture precise barometer and altimeter sessions, review Swift Charts, and enjoy seamless iPhone + iPad support with HowHigh. HowHigh turns your iPhone or iPad into a precision barometer and altimeter built for people who live by pressure changes and elevation gains. Switch instantly between dedicated tabs for live readings, log recording, and historical analysis, all wrapped in a native Apple design that feels at home on every device. Why outdoor pros, pilots, and weather watchers choose HowHigh: - Dual barometer and altimeter dashboards provide real-time pressure, elevation, rate of change, and sea-level adjustments. - Session recording captures every adventure or experiment, storing rich datasets you can replay at any time. - Interactive Swift Charts let you scrub through graphs, highlight peaks, and compare English or metric units with a tap. - Automatic device calibration keeps readings trustworthy whether you are tracking storms, mapping mountain trails, or tuning indoor environments. - Universal support means the experience is optimized for iPhone and iPad, Split View, Dynamic Type, and the latest iOS accessibility features. Ready from day one for localization, HowHigh surfaces every string through Localizable resources so teams can translate quickly and keep global releases in sync. iCloud sync is not required—your sessions remain safely on-device until you decide to share or export them. Take your next hike, flight, studio session, or science experiment to a new level with HowHigh. Start a recording, watch the pressure build, and keep precise altitude intelligence in your pocket.

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Liquid Glass & iPad support

The developer, Thirty Seven Inc., 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, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    • Seller
      • Thirty Seven Inc.
    • Size
      • 1.2 MB
    • Category
      • Utilities
    • Compatibility
      Requires iOS 16.0 or later.
      • iPhone
        Requires iOS 16.0 or later.
      • iPad
        Requires iPadOS 16.0 or later.
      • Mac
        Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
      • Apple Vision
        Requires visionOS 1.0 or later.
    • Languages
      English and 9 more
      • English, Arabic, French, German, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish
    • Age Rating
      4+
    • Copyright
      • © 2025 Thirty Seven, Inc.