Altitude Checker Downloads & RevenueAltitude Checker · App Store
Not in any tracked top chart right now.
Updated 7 Nov 2026 · rankings refresh through the day
DeveloperTakafumi AMANO
CategoryLifestyle
PriceFree
Released
Rating★ 4.4 (25)
Version3.1
Age rating4+
First seen by us
23 Oct 2026
23 Oct 2026Full timeline · 3 events
- 🆕Altitude Checker first spotted by AppInsiderJapan (found via developer)
- 📦Altitude Checker version 3.1- Adjusted timeout settings.
- Added new datasources. - 🆕Altitude Checker released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.4 ★
25 ratings
Measured
Altitude Checker on the App Store
App details
App ID
635168846
Publisher
Takafumi AMANO
On the store since
Apr 2013
13 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
2
EN JA
Size
296 MB
Also listed in
Utilities
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.4 ★
25 ratings
Measured
Ratings
25
Measured
About Altitude Checker
This app is a tool for measuring altitude, either at your current location or at arbitrary points. The app offers two measurement modes: Map Measurement Mode and GNSS Mode.
Map Measurement Mode:
When you launch the app, it enters this mode. In Map Measurement Mode, the app measures the altitude of the center position of a map using a digital elevation model (DEM). The app utilizes SRTM30 V2 data for altitude measurements. If you enable the “Use GSI’s API” switch in the settings, it can also make use of GSI’s API to obtain the altitude of Fundamental Geospatial Data (FGD) in Japan.
GNSS Mode:
Tapping on the “Get GNSS Altitude” button activates the GNSS Mode. In this mode, altitude is calculated using GNSS data. For users with an iPhone 3GS or earlier, the returned value represents ellipsoidal height.
Settings:
- Unit: Choose between Meter and Foot for altitude measurements.
- Special Datum: Select from Default (MSL), A. P. (Arakawa), Y. P., O. P., K. P., S. P., A. P. (Yoshinogawa), T. P. W., and B. S. L.
- Coordinate System: Opt for “Japan Plane Rectangular Coordinate System” instead of Latitude-Longitude.
- Display Address: Toggle this switch to display the address of the current location. When it’s off, coordinates are shown instead of an address.
- Use GSI’s API: As mentioned previously.
- Use GSI Tiles: Choose to use GSI tiles instead of Apple Maps.
- Update to Map Coordinates: Automatically update coordinates on the “Move Anywhere” page to the current position on the maps.
- Use Light Mode for Maps: Maps are displayed in Light Mode, even when Dark Mode is enabled.
About URL Scheme:
- Format: alt://lat/long
- lat: Latitude (double value)
- long: Longitude (double value)
If the latitude is not within the range of ±90 degrees, it will be replaced with the latitude and the longitude.
Map Measurement Mode:
When you launch the app, it enters this mode. In Map Measurement Mode, the app measures the altitude of the center position of a map using a digital elevation model (DEM). The app utilizes SRTM30 V2 data for altitude measurements. If you enable the “Use GSI’s API” switch in the settings, it can also make use of GSI’s API to obtain the altitude of Fundamental Geospatial Data (FGD) in Japan.
GNSS Mode:
Tapping on the “Get GNSS Altitude” button activates the GNSS Mode. In this mode, altitude is calculated using GNSS data. For users with an iPhone 3GS or earlier, the returned value represents ellipsoidal height.
Settings:
- Unit: Choose between Meter and Foot for altitude measurements.
- Special Datum: Select from Default (MSL), A. P. (Arakawa), Y. P., O. P., K. P., S. P., A. P. (Yoshinogawa), T. P. W., and B. S. L.
- Coordinate System: Opt for “Japan Plane Rectangular Coordinate System” instead of Latitude-Longitude.
- Display Address: Toggle this switch to display the address of the current location. When it’s off, coordinates are shown instead of an address.
- Use GSI’s API: As mentioned previously.
- Use GSI Tiles: Choose to use GSI tiles instead of Apple Maps.
- Update to Map Coordinates: Automatically update coordinates on the “Move Anywhere” page to the current position on the maps.
- Use Light Mode for Maps: Maps are displayed in Light Mode, even when Dark Mode is enabled.
About URL Scheme:
- Format: alt://lat/long
- lat: Latitude (double value)
- long: Longitude (double value)
If the latitude is not within the range of ±90 degrees, it will be replaced with the latitude and the longitude.
Latest updates
3.1
- Adjusted timeout settings.
- Added new datasources.
