# Pro Altimeter for Watch — Barometric Pressure Altimeter > Barometric and GPS altimeter for Apple Watch with multiple calibration options. (iPhone/iPad app by Craig Hunter.) - Source: https://appshunter.io/ios/app/pro-altimeter-for-watch/id1481738048 (this page in markdown: same URL + `.md`) - Developer: [Craig Hunter](https://appshunter.io/developer/286743884) - Category: Navigation, Utilities - Price: $0.99 - Rating: 4.30/5 from 4 App Store ratings · 8 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 1 MB - Languages: American English - Released: 2022-10-17 - Data updated: 2026-08-24 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/pro-altimeter-for-watch/id1481738048/reviews.md ## What is Pro Altimeter for Watch? Pro Altimeter for Watch is the newest Watch app from Hunter Research, developer of the popular outdoors app Theodolite. Pro Altimeter uses the high-fidelity barometric pressure sensor in the Apple Watch to measure and compute altitude. Although this is a Watch app, it has the same features, capabilities, and accuracy as the Pro Altimeter app for iPhone and iPad, just in a smaller form factor on your wrist! Pro Altimeter has a dead simple interface. Barometric altitude and GPS altitude are displayed in large easy to read numbers, with available units of feet or meters, and realtime accuracy estimates from the hardware. At bottom are calibration and settings buttons. The display offers highly-readable color schemes of luminescent green on black, white on black, and midnight red on black. Proper calibration is necessary to measure altitude from barometric pressure (this is why a pilot "dials in" the cockpit altimeter before taking off). Pro Altimeter offers numerous methods for calibration -- choose the easiest and most convenient: 1. Use GPS altitude. This method correlates the measured local barometric pressure with the altitude measured by GPS. This method can be used when your device has a clear line of sight to the sky and a reliable GPS fix with good accuracy that you trust. 2. Manually enter altitude in feet or meters. This method correlates the measured local barometric pressure with known altitude from landmarks, elevation benchmarks, trail markers, topo maps, land surveys, etc. 3. Manually enter pressure. If you have a weather station, weather report, or METAR report with equivalent sea level pressure for a nearby location, this can be used to correlate local barometric pressure to altitude. Pressure can be entered with units of inches Hg, kPa, or mb. 4. Check local airports. With the tap of a button, Pro Altimeter will locate the five closest airports within 100 miles (160km) of your present location anywhere in the world, and pull in METAR data. From that list of five, pick the airport of your choice and Pro Altimeter will import pressure data for calibration. Once calibrated, Pro Altimeter keeps track of the time since its last calibration. Because weather and local barometric pressure change over time, the app will warn you when 6 hours have elapsed since the last calibration by flashing the "CAL" button. You should calibrate as frequently as practical -- for example, on a hike, calibrate whenever you pass a trail marker or elevation benchmark, or hourly. But at a minimum, calibrate at least every 6 hours or whenever weather changes in your area. Pro Altimeter runs on all Apple Watch models running watchOS 9.6 or later. ## Key features - Barometric pressure sensor utilization - GPS altitude display - Multiple calibration methods (GPS, manual, airport data) - Real-time accuracy estimates - Customizable color schemes - Calibration reminders ## Chart rankings - #78 in Top Paid · Navigation (US App Store) ## Recent user reviews (8 of 8) All indexed reviews: https://appshunter.io/ios/app/pro-altimeter-for-watch/id1481738048/reviews.md ### 3/5 — Airports option gone after upgrade to iPhone 17 *2025-12-14* Great app while it was working on iPhone 14 Pro Max but on 17 Pro Max the Airports selection have disappeared. It is all enabled in Motion & Fitness and set to “precise” and “when using”. ### 2/5 — Unfortunately not worth it. *2025-05-04* Manually entering the barometric pressure (trying all the options) results in over 145,000 ft in error! **Developer response:** This usually means you did not give the app permission to use Motion & Fitness tracking (or you have that disabled in your Motion & Fitness settings on your iPhone, which then blocks the Watch as well). ### 5/5 — Clear Altimeter *2025-03-16* The Altimeter is very clear and with the different options to set the base pressure it is ideal for my use. I would like the addition of an alarm you could set when reaching or deviating from a set height. ### 2/5 — Non functioning complication on WatchOS 10.3 Beta *2023-12-26* I bought this only for the watch face complication. Two problems with that: The elevation does not appear in the complication, only dashes. And the huge logo means if the elevation did appear, it would be a tiny font. Remove that logo please. ### 1/5 — HTTP error on receiving pressure from airport. *2023-10-16* It says Error: Unable to access server. HTTP error 404 every time I try to get my local airport pressure. Not a great experience considering I’ve paid for this. ### 1/5 — No show on watch *2023-10-11* Still no show on watch store **Developer response:** Go on your Watch, open the Watch’s App Store app, scroll down and tap “Account”, then tap “Purchases”, then install the app on the Watch from there. ### 5/5 — Best altimeter for watch *2023-10-08* I have downloaded about 5 barometer / altimeter apps. This is the best. On the Apple Watch ultra all the other apps fail to work when the app looses gps signal. This app will still display a calibrated barometric or pressure altitude with gps signal failure. You can calibrate with altitude, pressure, gps. From a pilot perspective it is the only app that has been implemented properly. Well done. Also Craig’s Theoolite app for iPhone is superb. Use it for chopping down trees to see where they going to fall and a variety of other uses. Great developer. Thanks Sean ### 5/5 — Pro ALTIMETER WATCH,de Craig Hunter *2022-10-29* Compre la aplicación el 24 de Octubre 2022 y estaba contento como funcionaba,pero al hacer un adgrey de apple,se me borró y ahora no puedo instalarlo de nuevo,pues me dice comprado y sin embargo no me deja instalarlo.Muchas gracias **Developer response:** Go on your Watch, open the Watch’s App Store app, scroll down and tap “Account”, then tap “Purchases”, then install the app on the Watch from there. ## Frequently asked questions about Pro Altimeter for Watch ### What is Pro Altimeter for Watch? Pro Altimeter for Watch is an application for Apple Watch that uses the device's barometric pressure sensor to measure and display altitude. It offers various calibration methods to ensure accuracy for outdoor activities. ### How accurate is Pro Altimeter for Watch? The app leverages the high-fidelity barometric pressure sensor in the Apple Watch and provides real-time accuracy estimates. Proper calibration is crucial for optimal accuracy, with the app reminding users to recalibrate every 6 hours or when weather changes. ### What are the calibration options for Pro Altimeter for Watch? Pro Altimeter for Watch offers four calibration methods: using GPS altitude, manually entering altitude, manually entering pressure, or checking local airport METAR data. This flexibility allows users to choose the most convenient method based on their location and available information. ### Can I use Pro Altimeter for Watch offline? While the app uses GPS for one of its calibration methods, which requires a clear view of the sky, the core functionality of displaying altitude from the barometric sensor does not strictly require an internet connection once calibrated. However, fetching airport data for calibration does require connectivity. ### What devices does Pro Altimeter for Watch support? Pro Altimeter for Watch runs on all Apple Watch models running watchOS 9.6 or later. It is also compatible with iPhone and iPod devices, though its primary interface is optimized for the Apple Watch. ### How often is Pro Altimeter for Watch updated? The app was last updated on September 28, 2025, indicating a commitment to maintenance and potential improvements. The current version is 1.0.4. ### What is the price of Pro Altimeter for Watch? Pro Altimeter for Watch is a paid application, available for $0.99. There are no in-app purchases or subscription fees associated with its use. ### Does Pro Altimeter for Watch have ads? No, Pro Altimeter for Watch is ad-free. As a paid application, it provides an uninterrupted user experience without advertisements. ## Version history (last 5 releases) ### 1.0.4 — 2025-09-28 Update to deal with changes in the NWS aviation weather data server used to calibrate with airport METARs. ### 1.0.3 — 2024-03-27 Fix for issue preventing access to the Watch's barometric pressure sensor after a user's iPhone was updated to iOS 17.4-17.4.1. Upon first launching this new version, you will need to grant access to Motion & Fitness data in order for Pro Altimeter to use the barometric pressure sensor and begin computing altitude. ### 1.0.2 — 2023-10-21 Update to handle unannounced changes in the NWS AviationWeather API that supplies airport weather data for calibration. ### 1.0.1 — 2023-03-28 Added complication shortcut to launch app. ### 1.0 — 2022-10-17 No release notes. ## Apps similar to Pro Altimeter for Watch | App | Rating | Price | Category | | --- | --- | --- | --- | | [Altimeter Elevation Watch](https://appshunter.io/ios/app/altimeter-elevation-watch/id1306145803) | 4.5 (59) | Free | Navigation | | [Altimeter: Elevation, Compass](https://appshunter.io/ios/app/altimeter-elevation-compass/id1227302521) | 4.7 (1,262) | Free | Navigation | | [Altimeter Mountain GPS Tracker](https://appshunter.io/ios/app/altimeter-mountain-gps-tracker/id1414926824) | 4.4 (9) | Free | Navigation | | [Pressure Altimeter Tracker](https://appshunter.io/ios/app/pressure-altimeter-tracker/id6449918068) | 5.0 (6) | Free | Navigation | | [IGNIS \| Wildfire Operations](https://appshunter.io/ios/app/ignis-wildfire-operations/id1663559375) | 4.8 (53) | Free | Navigation | | [Altimeter+](https://appshunter.io/ios/app/altimeter-plus/id417204570) | 4.5 (700) | $1.99 | Navigation | ## More apps by Craig Hunter - [Star Race Omega](https://appshunter.io/ios/app/star-race-omega/id300776131) - [Theodolite](https://appshunter.io/ios/app/theodolite/id339393884) - [Wx for iPad](https://appshunter.io/ios/app/wx-for-ipad/id376956323) - [Theodolite HD](https://appshunter.io/ios/app/theodolite-hd/id425456242) - [Wx for iPhone](https://appshunter.io/ios/app/wx-for-iphone/id451916164) - [Pro Compass](https://appshunter.io/ios/app/pro-compass/id517739197) All apps by Craig Hunter: https://appshunter.io/developer/286743884 ## Related topics [pro altimeter for watch](https://appshunter.io/ios/topics/pro-altimeter-for-watch) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*