# avAltimeter — A True Aviation Altimeter > Digital aviation altimeter with Kollsman adjustment and density altitude calculation. (iPhone/iPad app by Aviametrix, LLC.) - Source: https://appshunter.io/ios/app/avaltimeter/id1120306812 (this page in markdown: same URL + `.md`) - Developer: [Aviametrix, LLC](https://appshunter.io/developer/1120306811) - Category: Lifestyle, Navigation - Price: $0.99 - Rating: 4.60/5 from 19 App Store ratings · 8 written reviews indexed - Age rating: 4+ - Requires: iOS 17.6 · 2 MB - Languages: American English - Released: 2016-06-08 - Data updated: 2026-08-21 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/avaltimeter/id1120306812/reviews.md ## What is avAltimeter? Simple and Effective! avAltimeter is a digital, aviation-oriented altimeter. It is the only altimeter app which has the Kollsman adjustment so you can adjust the altimeter to the current barometer setting, or to 29.92 inches of mercury for the pressure altitude. Need a quick backup for your panel? avAltimeter uses the latest Apple and Bosch technology built into the iPhone 6 and later models. Earlier models of the iPhone and iPads before iPad Air 2 or Mini 4 do not have the required pressure sensing hardware and do not work. All iPad Pro models work too! Smart! avAltimeter calculates the temperature sensitive Density Altitude. Based on the Density Altitude, the app also calculates True Airspeed as a function of Indicated Airspeed. avAltimeter calculates a rough estimate of the increased required Take-Off distance from that at seal level from increased Density Altitude as well. You can even set the App to obtain automatically obtain the latest barometric pressure from the closest reporting airport. The barometer setting will auto-update every 20 minutes, or if you move more than 25 miles from your previous location. When using the live METAR update feature, the App will display which airport pressure it is using, and how old the reading is. This feature requires an internet connect and active GPS, so it will not work well if you are flying inside a jet. In a jet, the App works great to track the cabin pressure if you just leave the barometric pressure set at 29.92 inHg. Increased Safety! Know your oxygen requirements. avAltimeter tracks your altitude and provides a warning to use oxygen when you exceed FAA mandated limits. Customizable! avAltimeter is customizable. Choose Imperial or Metric units. Set the Altimeter Setting through a popup Kollsman window or by directly setting the field altitude. The field altitude can be set manually or automatically by GPS. Select Day or Night illumination. Turn the audio alarms for oxygen on or off. Improve the take-off performance estimate by selecting your propellor type: constant speed or fixed pitch. Sensitive! The Bosch sensor chip built in to the iPhone 6 and later is sensitive to changes in altitude of three feet or less and has an estimated range from -1500 feet to over 20,000 feet. Unique! Unlike other aviation apps, avAltimeter uses actual barometric pressure to calculate altitude, not a GPS estimate. The barometer is only available in iPhone 6 and later or the iPad iPad Air 2, Mini 4 as well as all iPad Pro! Legal Disclaimer This is an app, not an FAA approved flight instrument. It has not been certified as meeting the relevant TSO specifications. This app can not be used as a primary flight instrument. ## Key features - Kollsman adjustment for barometric pressure - Density Altitude and True Airspeed calculation - Automatic barometric pressure updates from airports - Oxygen requirement warnings based on altitude - Imperial/Metric unit selection - Day/Night illumination modes ## Recent user reviews (8 of 8) All indexed reviews: https://appshunter.io/ios/app/avaltimeter/id1120306812/reviews.md ### 1/5 — Rubbish *2024-07-26* Absolute rubbish, don’t waste your money like I did…. DELETE!!! **Developer response:** This App is for and by pilots. Pilots love it. It looks and acts just like the instrument in their panel, except it has more features and you can use it in a car, or the back of an airliner. Since you did not have any specific complaint, we can only assume you are not familiar with aviation altimeters. ### 3/5 — UI problems *2022-07-06* I like how it gives density altitude, and how it emulates a real aircraft altimeter, but the button for changing the OAT seems to be hidden under the “gear” button you click to change the preferences, and there seem to be other buttons below the bottom of the screen. Adjusting the OAT and QNH is a problem, the number selectors seem rather haphazard. It seems to make me select crazy temperatures like 108°C or minus 15°C when it’s plus 15°C (I use Celsius) so I have to really make sure it selects the right sign. The number selectors really need fixing ### 1/5 — Does not support watch complications *2021-02-04* So, not good **Developer response:** If you wanted a watch app, you chose the wrong app. This app does everything it is advertised to do. Nowhere does it say it does watch functions. It’s little brother app “Aviation Altimeter for Watch” is the watch-based pressure altimeter with all features of the iOS app. ### 5/5 — Well done ! *2020-05-09* As a pilot, this is exactly what I wanted for educational purposes. It is an electronic altimeter made to look exactly like an altimeter in an airplane.. well done. It does exactly what it is dessigned to do and nothing more. **Developer response:** Thanks for the kudos Chrissey! They are much appreciated. Actually, the app does a bit more than a panel altimeter: Density Altitude, Altitude Alerting, smart Oxygen Alarm, setting QNH by 4 different sources, etc. Enjoy the App! ### 1/5 — Horrible *2019-04-01* I mean, the UI hurts my eyes, how can this app be so highly rated with all the great altimeter apps around? **Developer response:** This reviewer must be thinking about GPS-based hiking apps. avAltimeter looks and acts exactly like the pressure altimeter found in every real aircraft control panel. Pilots love it! ### 5/5 — Happy User *2017-08-31* Nicely done! ### 5/5 — Retired *2017-04-21* The only altimeter app I've found with a truly real appearance including a Kollsman window. I love it. ### 5/5 — AvAltimeter *2017-03-12* Works as described. ## Frequently asked questions about avAltimeter ### What devices does avAltimeter work on? avAltimeter requires a pressure sensing hardware, available in iPhone 6 and later, iPad Air 2, Mini 4, and all iPad Pro models. Earlier iPhones and iPads do not support this app. ### How accurate is avAltimeter? The app utilizes sensitive Bosch sensor chips in compatible iPhones, capable of detecting altitude changes as small as three feet. It operates within an estimated range from -1500 feet to over 20,000 feet. ### Can avAltimeter be used as a primary flight instrument? No, avAltimeter is an app and not an FAA-approved flight instrument. It has not been certified and cannot be used as a primary flight instrument. ### How does avAltimeter get barometric pressure settings? You can manually set the Kollsman window or field altitude. Alternatively, the app can automatically obtain the latest barometric pressure from the closest reporting airport every 20 minutes or upon significant location changes, requiring internet and GPS. ### Does avAltimeter have ads? No, avAltimeter is ad-free. The app does not contain advertisements. ### What is the price of avAltimeter? avAltimeter is a paid application, available for $0.99. There are no in-app purchases or subscription fees. ### How often is avAltimeter updated? The latest version is 1.25, last updated on January 3, 2026. This indicates a relatively active development cycle for the app. ### What is the age rating for avAltimeter? avAltimeter has an age rating of 4+. This means it is considered suitable for children aged 4 and above. ## Version history (last 5 releases) ### 1.25 — 2026-01-03 Major New Feature: Live setting barometric pressure from closest Aviation Weather reporting station. Updated for iOS 26. Many code tweaks for efficiency. ### 1.21 — 2024-05-22 Maintenance update for iOS 17.5 ### 1.20 — 2024-02-05 Updated for iOS 17. Removed usage tracking ### 1.16 — 2022-06-21 Fixed two issues related to Altitude Alerting when using iPad devices. ### 1.15 — 2022-01-11 More minor tweaks to the user experience. Refined iPhone 12 and 13 screen layouts ## Apps similar to avAltimeter | App | Rating | Price | Category | | --- | --- | --- | --- | | [Hooray! 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*