Altitude Checker
Measure Altitude with GNSS
FreeOffers In-App Purchases
2.9.4for iPhone, iPad and more
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Altitude Checker Screenshots
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.
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What's New in the Latest Version 2.9.4
Last updated on Oct 31, 2023
Old Versions
- Supported iOS 17.
- Fixed bugs.
- Fixed bugs.
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Version History
2.9.4
Oct 31, 2023
- Supported iOS 17.
- Fixed bugs.
- Fixed bugs.
2.9.3
Oct 31, 2022
- Supported iOS 16.
- Supported Split View.
- Supported Split View.
2.9.2
Oct 19, 2021
- Supported iOS 15.
2.9.1
Sep 2, 2021
- Changed address generation method.
2.9
Aug 18, 2021
- Fixed a bug.
2.8.10
May 25, 2021
- The final version to support iOS 9–11.
- Fixed bugs.
- Fixed bugs.
2.8.9
Nov 14, 2020
- Supported iOS 14.
- Improved user interface.
- Improved user interface.
2.8.8
Oct 31, 2019
- Fixed a crash bug in some sea areas.
2.8.7
Oct 20, 2019
- Fixed bugs.
2.8.6
Oct 18, 2019
- Added a geocoding function.
2.8.5
Oct 3, 2019
- Supported iOS 13.
- Supported Dark Mode.
- Supported Dark Mode.
2.8.4
May 13, 2019
- Fixed bugs.
2.8.3
May 9, 2019
- Revised city database.
2.8.2
Feb 12, 2019
- Supported iPad Pro 3rd Generation.
- Revised a list of world cities.
- Revised a list of world cities.
2.8.1
Jul 6, 2018
- Fixed bugs that occurred under iOS 11.
2.8
Jul 3, 2018
- Supported Japan Plane Rectangular Coordinate System.
2.7.3
Jun 28, 2018
- Fixed Canberra's location.
2.7.2
Jun 27, 2018
- Fixed bugs.
2.7.1
Jun 22, 2018
- Revised a list of World Cities.
- Fixed detail.
- Fixed detail.
2.7
Nov 2, 2017
- Support for iOS 11.
- Support for iPhone X.
- Revised megacities list.
- Added GSI Tiles.
- Support for iPhone X.
- Revised megacities list.
- Added GSI Tiles.
2.6.5
Nov 14, 2016
- Supported iOS 10.
- Fixed bugs.
- Fixed bugs.
2.6.4
Jun 1, 2016
- Fixed a bug in the automatic address search.
2.6.3
May 13, 2016
- Added a URL Scheme (alt://).
2.6.2
Apr 29, 2016
- Fixed bugs.
2.6.1
Apr 6, 2016
- Improved the UI.
- Fixed bugs on iPad.
- Fixed bugs on iPad.
Altitude Checker FAQ
Click here to learn how to download Altitude Checker in restricted country or region.
Check the following list to see the minimum requirements of Altitude Checker.
iPhone
Requires iOS 12.0 or later.
iPad
Requires iPadOS 12.0 or later.
iPod touch
Requires iOS 12.0 or later.
Altitude Checker supports English, Japanese
Altitude Checker contains in-app purchases. Please check the pricing plan as below:
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$1.99