Barometer & Altimeter: HowHigh

Name: Barometer & Altimeter: HowHigh
Rating: 2.3 (25 reviews)
Author: Thirty Seven Inc.

Elevation tracker & charts

Free · Designed for iPad. Not verified for macOS.

25 Ratings
Age Rating

4+
Years
Category

Utilities
Developer

Thirty Seven Inc.
Language

EN
+ 9 More
Size

7.4
MB

Free live altitude and pressure readings, session recording, charts, comparisons and CSV export—with calibration and sensor-confidence context. HowHigh is a free barometer and altimeter toolkit for following altitude and air-pressure changes. See live readings, record sessions, and compare history on iPhone and iPad—without a subscription. USE HOWHIGH TO: - View live pressure, altitude, rate of change, elevation gain, and sea-level adjustments. - Record hikes, climbs, hills, stairs, weather observations, and experiments. - Review session history, compare recordings, and explore interactive charts. - Share results or export recorded data as CSV. - Choose manual calibration, optional WeatherKit calibration, or nearby NWS station calibration where supported. - See the active measurement source and sensor-confidence context alongside each reading. - Switch between metric and imperial units. Your recorded sessions stay on your device until you choose to share or export them. Core readings and saved history remain available offline; online calibration sources require a connection. HowHigh is designed for everyday observation and exploration. It does not replace certified instruments or safety-critical guidance. Track how altitude and air pressure change over time—all core features are free.

Ratings & Reviews

2.3

out of 5

25 Ratings

Don’t use this
08/20/2020
kingcookie421
It don’t work it’s a waste of time

Developer Response
I have since completely rewritten the app. Would you mind reevaluating your 1 star review? It would really help my rating! 🙏
Don’t use this
08/20/2020
kingcookie421

It don’t work it’s a waste of time
Developer Response 10/31/2025
I have since completely rewritten the app. Would you mind reevaluating your 1 star review? It would really help my rating! 🙏
Accurate and Easy to Use
10/24/2025
_boyo_
HowHigh is the most accurate and easy to use barometer and altimeter app out there. Super user friendly and really helpful!
Accurate and Easy to Use
10/24/2025
_boyo_

HowHigh is the most accurate and easy to use barometer and altimeter app out there. Super user friendly and really helpful!
keep updated app is getting better
Feb 8
Zbity
Updated and improved flow and functionality is imported intuitively is a goal suggestion better explaining section of how and why calibration is important..more increased understanding of the appnavigation..In an app it is just not functionit is interface and user experience and user understanding the flow This could be a swipe example use instructions
keep updated app is getting better
Feb 8
Zbity

Updated and improved flow and functionality is imported intuitively is a goal suggestion better explaining section of how and why calibration is important..more increased understanding of the appnavigation..In an app it is just not functionit is interface and user experience and user understanding the flow This could be a swipe example use instructions
So simple.
10/01/2014
@jacobskinsuit
Does what it says, and does it by actually using the iPhone 6's BAROMETER. That's super cool! I use this app in elevators just for kicks. Because why not?
So simple.
10/01/2014
@jacobskinsuit

Does what it says, and does it by actually using the iPhone 6's BAROMETER. That's super cool! I use this app in elevators just for kicks. Because why not?

HowHigh 1.4.1 keeps your measurements within reach: - Continue a recording session while the screen is locked, with clear interruption and recovery states. - Follow an active session from the Lock Screen and Dynamic Island. - See current readings in Home and Lock Screen widgets. - Use the Apple Watch app and complication for glanceable readings and session controls. - Refined settings, localization, accessibility, and privacy controls.

Version 1.4.1 1d ago

Data Not Linked to You

The following data may be collected but it is not linked to your identity:
- Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

Information

Seller: Thirty Seven Inc.
Size: 7.4 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.

Apple Watch
Requires watchOS 10.0 or later.
Location: This app may use your location even when it isn’t open, which can decrease device battery life.
Languages: English and 9 more

English, Arabic, French, German, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish
Age Rating: 4+

4+

Learn More