# Alti-watcher > Measures and records mountain climbing altitude gain using GPS and barometer. (iPhone/iPad app by Adam Mazur.) - Source: https://appshunter.io/ios/app/alti-watcher/id1544665506 (this page in markdown: same URL + `.md`) - Developer: [Adam Mazur](https://appshunter.io/developer/1330324726) - Category: Travel, Navigation - Price: Free - Rating: 3.70/5 from 3 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 8 MB - Languages: American English - Released: 2020-12-14 - Data updated: 2026-08-29 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/alti-watcher/id1544665506/reviews.md ## What is Alti? Alti-Watcher is designed to count the meters climbed when hiking in the mountains. The application reads the initial location and altitude from the GPS module, and after approx. 30 sec. switches to altitude reading based on the built-in barometer. The location is also used during route recording when the phone has the screen off. When prevent sleep mode is active, GPS is turned off and only the barometer is active. The compass dial shows the sun's position at sunrise and sunset as a yellow and red dot and a level marker as two concentric circles. The results are presented on a daily, monthly and total basis. The month graph shows the results for all days in the current month and the previous months. The best daily result for the month is marked in red. The second graph shows the results for the current and previous years. The number of years presented can be set up to 10 years. On each graph, the total result (Σ) for the month or year is displayed in red. The chart of the current route profile will be shown on the profiles charts tab when the current recording ends. Charts can be sorted by date, elevation or trip time in descending order. The Description button allows you to name the selected route profile chart and the Delete button allows you to permanently delete it. Route profile charts can be saved to disk. This way you can share them with your friends. The files are saved in jpg format in the Alti-watcher/charts directory (run the Files application and go to On My iPhone->Alti-watcher->charts). The application allows you to play the sound every 20 m up or down by default. You can change this value or turn off the sound. Playing audio is useful when hiking in the mountains with your phone in your backpack. Recording allows you to record the meters climbed and the trail profile. You can pause the recording at any time during longer rests and then resume it when you start walking. Recording also stops automatically after 8 hours, but this value can be changed between 4 and 48 hours. Dim screen and prevent sleep improves the accuracy of the altitude readings. This will only slightly increase the energy consumption. High refresh rate allows you to record a profile chart with a time period of 1 second. In this mode, the results are not saved. Selected temperature range allows the barometer to be accurately calibrated in the range. This setting corrects the altitude readings that are dependent on the air temperature. The selected temperature range is presented in the form of a thermometer with the appropriate color in the altimeter view. The application does not collect or transfer any data. The database backup is stored on the phone, so it can be restored in case of failure and is not transferred anywhere. This appliacation requires the Fitness Tracking option to be enabled for the barometer to work: 1. Head to the 'Settings' app. 2. Scroll to 'Privacy & Security' and open. 3. Scroll to 'Motion & Fitness' and open. 4. Turn on 'Fitness Tracking' toggle. ## Key features - Altitude tracking via GPS and barometer - Daily, monthly, and yearly climb summaries - Route profile recording and saving - Configurable audio alerts for elevation changes - Compass with sunrise/sunset indicator - Adjustable recording duration ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/alti-watcher/id1544665506/reviews.md ### 1/5 — Can’t change units *2024-05-30* Everyone says they have a Barometer app. And they give you your GPS altitude. This one at least appears to use the pressure sensor. However it doesn’t work in US units. And I’m not sitting with a calculator to do the conversions the developer is too lazy to write. **Developer response:** The developer makes every effort to make the application the best it can be and develops it in his free time after work hours. So I apologize to everyone for my laziness and delivering the application that I am able to make. The minimum height that can be read from the barometer is 1 meter. This is determined by the API provided by Apple. So there is no way to convert it to smaller units, e.g. feet. ## Frequently asked questions about Alti ### How does Alti-watcher track my climbs? Alti-watcher initially uses GPS for location and altitude, then switches to the built-in barometer for more accurate readings. It records meters climbed and trail profiles, with an option to pause and resume recordings. ### What kind of data does Alti-watcher present? It provides daily, monthly, and total altitude gain summaries. Monthly graphs show results for the current and previous months, with the best daily result highlighted. Yearly graphs show current and previous years' results, up to 10 years can be displayed. ### Can I save and share my routes with Alti-watcher? Yes, route profile charts can be saved to disk in JPG format, allowing you to share them with friends. You can also name and delete saved route profiles. ### Does Alti-watcher have audio alerts? Yes, Alti-watcher can play a sound every 20 meters climbed or descended by default. This value is adjustable or can be turned off, which is useful when hiking with your phone in a backpack. ### What are the recording limitations in Alti-watcher? Recording stops automatically after 8 hours, but this can be adjusted between 4 and 48 hours. A high refresh rate mode allows for 1-second time period recording for profile charts, but results are not saved in this mode. ### Is Alti-watcher accurate in different temperatures? The application allows for calibration of the barometer within a selected temperature range to correct altitude readings. This is presented as a thermometer with appropriate color in the altimeter view. ### Does Alti-watcher collect or transfer my data? No, the application does not collect or transfer any data. Database backups are stored locally on the phone for restoration purposes and are not transferred anywhere. ### Does Alti-watcher have ads? No, Alti-watcher does not contain advertisements, making for an uninterrupted tracking experience. ## Version history (last 5 releases) ### 7.19 — 2026-08-20 Adjusted the minimum application requirements to iOS 15. ### 7.18.3 — 2026-08-11 Static route profile charts are now interactive. Simply tap and swipe to see elevation changes. Several minor bugs have also been fixed. ### 7.18.2 — 2026-08-08 Static route profile charts are now interactive. Simply tap and swipe to see elevation changes. Several minor bugs have also been fixed. ### 7.18 — 2026-08-06 Static route profile charts are now interactive. Simply tap and swipe to see elevation changes. Several minor bugs have also been fixed. ### 7.17.3 — 2026-08-03 The appearance of the application has been adapted to iOS 26 in terms of Liquid Glass. ## Apps similar to Alti | App | Rating | Price | Category | | --- | --- | --- | --- | | [Baloc: Your altitude profile](https://appshunter.io/ios/app/baloc-your-altitude-profile/id1544790844) | 5.0 (3) | Free | Travel | --- *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 2026-08-29.*