Altimeter Watch is designed to take advantage of the GPS in your Apple Watch Series 2 or 3. It provides you with a graph of your altitude history.

There is an included complication that will periodically update to show your most recent altitude.

Altimeter Watch also includes oxygen monitoring features! The real-time altimeter display on the watch will now show you how thin the air is, as a percentage of the oxygen available in the air at sea-level.

There is also an oxygen percentage history graph, to visualize how much oxygen you've had available in the recent past.

This oxygen percentage will also show up in some complications. (O₂@SL - Oxygen at Sea-Level).


To allow for more frequent GPS data collection, this app includes a Workout Mode. When recording a Workout, the Altimeter Watch app will stay in the foreground, and show your altitude history every time you raise your wrist.

When Workout Mode is stopped, your workout can (optionally) be saved to Apple Health.

Using Workout Mode decreases battery life, please only use it when you need detailed altitude data.

The app also includes a companion iPhone app that allows you to inspect the data points collected by the Apple Watch in detail.

Altimeter Watch only works with Apple Watches that are equipped with built-in GPS. This app does not work with Apple Watch Series 0, or 1. It also does not work with iPads.

Altimeter Watch is most accurate when your watch has a clear view of the sky.


Note: The Altimeter Watch oxygen monitoring features are estimates only, and may be inaccurate. Altimeter Watch does not at any time guarantee a healthy or safe breathing environment. Users of Altimeter Watch should have property training, professional supervision and a backup source of oxygen available at all times, especially when either above 300m of elevation, in poorly ventilated spaces, in locations where dangerous gases may be encountered, or any combination of these scenarios.

GPS altitude data can be inaccurate indoors, and in enclosed vehicles such as aircraft. Altimeter Watch is not to be used as a primary source of data for aviation, navigation, or surveying.


If you choose to enable the oxygen monitoring features, payment will be charged to your iTunes account, and your account will be charged for renewal within 24-hours prior to the end of the current period. Auto-renewal may be turned off at any time by going to your settings in the iTunes Store after purchase. Current oxygen monitoring subscription prices are $1.49USD for 3 months, $3.49USD for 6 months, and $5.99USD for a year. Prices are in U.S. dollars, and may vary in countries other than the U.S. and are subject to change without notice. Cancellation of the subscription will result in oxygen monitoring features turning off.

Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase.


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What’s New

Version 1.0.7

- Fixed an issue where the watchOS app would either fail to start, or run very slowly because of too many altitude history data points.
- Altitude and Oxygen History graphs will only be displayed for data collected while in workout mode on the watch. Altitude data collection is too sparse to provide an accurate graph when not in workout mode.
- The Altimeter Watch complication will be updated periodically when you raise your wrist to view it. The frequency of these updates is limited by watchOS restrictions.

Ratings and Reviews

3.8 out of 5
23 Ratings

23 Ratings

Dawgfish812 ,

Altimeter on watch

Continuously appears unasked for. Drains battery. Accurate enough for general purposes.

Printer154 ,

Best Altimeter App our there!

Hands down this is the best Altimeter app for the Apple Watch. Has great complications for all Watch faces and has an update time on the display as well. I have tried every other one in the App Store and this is the best you can get. The developer is quick to answer any questions you may have. Oh and believe it or not it’s FREE!!

CraneDomain ,

Broken Watch App and crazy battery consumption

This app drained 59 percent of my battery using GPS over just 9 hours. And the watch face always is forced to be displayed even if app is closed. The watch app is laggy and slow when there is no good reason for this. Also the paid purchases do not remove the ads, buggy misleading application. One star - I believe the other reviews are fake

Developer Response ,

Hey CraneDomain, sorry you had a bad experience! Thank you for the feedback.

For me, this app works best if you set it up as a complication at this point. Eventually, the app will stop persistently sitting on the foreground of your watch.

It seems to be a bug with watchOS for apps that use the GPS in the background. I am unable to control it, last I checked.

Once it calms down on the foregrounding, the battery usage reduces too in my experience. I have a Series 3 LTE, and my battery will last about two days, when I use this app as a complication.

There are no ads in this app, other than my request for your in app purchase on the oxygen history screen, so perhaps you got that confused with another app?

Anyways, I hope Apple allows me to have better control in upcoming watchOS releases, so I can give everyone a better experience! I will try to find some time to improve this app for the upcoming ski season, which is the time of year that I use it the most!

Hope I can earn more than 1 star from you in the future! 😁


JBVD Industries LLC
35.2 MB

Requires iOS 12.0 or later. Compatible with iPhone, iPad Air Wi-Fi + Cellular, iPad mini 2 Wi-Fi + Cellular, iPad Air 2 Wi-Fi + Cellular, iPad mini 3 Wi-Fi + Cellular, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro Wi-Fi + Cellular, iPad Pro (9.7-inch) Wi‑Fi + Cellular, iPad (5th generation) Wi‑Fi + Cellular, iPad Pro (12.9‑inch) (2nd generation) Wi‑Fi + Cellular, iPad Pro (10.5-inch) Wi‑Fi + Cellular, iPad Wi-Fi + Cellular (6th generation), iPad Pro (11-inch) Wi-Fi + Cellular, iPad Pro (12.9-inch) Wi‑Fi + Cellular, iPad mini (5th generation) Wi-Fi + Cellular, and iPad Air (3rd generation) Wi-Fi + Cellular.



Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© 2017-2018
In-App Purchases
  1. One Year $2.49
  2. 3 Months $0.99
  3. 6 Months $1.49


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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