The Pilot's Choice!
A complete, full-featured aviation altimeter running inside your Apple Watch Series 3 or higher!

A real barometric Altimeter, not GPS-based. Authenticl Altimeter dial with digital readout!

This altimeter allows you to set the field altimeter setting (QNH). The Altitude can be displayed in Feet, Meters, or Flight Level. You can also display the raw barometric pressure. The Kollsman window allows setting the local pressure in either inches of mercury or hectoPascals (millibars). Completely International!

Once you load the App from your phone and set your preferences with the companion iPhone App, the watch Altimeter is completely independent of the phone. Use this App without a phone nearby and without any internet connection. Set Preferences directly on the watch by Swiping left.

Swipe to the right and see your current density altitude by using the watch crown to set the ambient temperature.

Tap the AltAlert button and set a desired target altitude and range. The will show you graphically when you go out of bounds.

An extra bonus feature is an oxygen alarm to remind you haptically and visually when you exceed 12,500 ft. The alarm only functions when the Altimeter App is running on the face of the watch!

This app is Flight Tested, but NOT FAA TSO-certificated and can not be used as a primary flight instrument!

This App only works on Apple Series 3 and later Watches! Remember to allow the app to use the Fitness & Motion sensors in "Settings"

Swipe left to change Units, swipe right for Density Altitude, tap the left button to adjust the Station Pressure. Tap the right button for Alert Alert settings

What’s New

Version 2.06

Bright and shiny for WatchOS 6
A minor bugs smashed

Ratings and Reviews

4.0 out of 5
11 Ratings

11 Ratings

Booboolaaas ,

Series 4 screen size

I purchased app today and very happy with it but it does not look like it fits well on the series 4 44mm watch, it looks like an egg shaped display. I hope it’s not the final version and j hope there will be a fix for this because it looks awkward.

Developer Response ,

Thanks for the feedback! The graphics guru has been kicked ;). The fix is now available for free update in the App Store.

stashoo99 ,

Developer Helped Get Mine Workimg

Message appears to authorize access to watch barometer. Ok does nothing. Message comes back. Emailed developer. No response. Will adjust review when problem is fixed.

I am revising my review. It now works and developer has added instructions. Thank you. My only gripe is that the top and bottoms of the altitude digits are cut off on my watch. I can still read the altitude but it takes a minute to interpret the numbers.

REVISING AGAIN. Digit clipping is fixed in latest version. With local altimeter setting the altimeter is quite accurate. So much better than GPS estimates. I can usually get current altimeter setting by asking SIRI. Nice APP

Developer Response ,

Version 1.04 handles the Series 4 screen sizes better. This should fix the digit clipping. Thanks for revising your review!

Sorry for the delayed response here. We did get a single query on this issue from someone named Stan and we responded the same day to that person’s reply address.
There is nothing wrong with the App. As with so many things in the Appleverse, a user must explicitly give permission to a device to access certain features, barometers included. Most users have already turned this permission on by the time they get the Altimeter App. We apologize for not giving explicit direction for this issue. Here goes the easy fix:

On the paired iPhone, open Apple’s Watch App.
Scroll down the main view to “Privacy”
Turn On “Fitness Tracking”. That’s it! Fitness tracking enables all the motion sensors, accelerometers, and barometer on the watch for use by Apps.

Please consider revising your negative review.

KKenosha ,

Works well...when on the face

I was impressed by the features and how easy it was to set up a target altitude. The issue that I had this after several minutes, the app will drop off the watch face which would then revert to its standard face. I was not able to figure out a way to set a time out to keep the app open. Unless this is user error (which is certainly a possibility), it’s not nearly as useful as it could be. Using on a series 5 watch.
Followed the directions to update the “Wake Screen” settings and NOW this is a really useful app. Glad to be some to give it 5 stars. Thank you!

Developer Response ,

Hi K, Thanks for the review. What you describe is a *!@#Feature#@!* of the Watch. You can change the Watch behavior as described in AppleInsider below. If this change in watch settings helps you, would you consider revising your rating :)

"By default, the Apple Watch acts as first and foremost as a watch, displaying the time when a user raises their wrist. But the settings on the Apple Watch also allow users to have the device operate more like a smartphone, resuming the last activity.

As anyone who has tried exercising with a third-party Apple Watch app knows, after a short period of time, the device will return to displaying the default clock face when they raise their wrist. Luckily, there's a simple fix for those who would rather have third-party apps stay in the foreground.

On the Apple Watch, users can open the Settings app, then select General, and then Activate on Wrist Raise. Scroll down to Resume To and switch the checked item to Last Used App."

App Privacy

The developer, Aviametrix, LLC, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer's privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


Aviametrix, LLC
3.2 MB

Requires iOS 13.0 and watchOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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