This app is a tool which measures an altitude of a current position or arbitrary points. The app has two measurement modes. One is a map measurement mode and the other is a GNSS mode.

■ Map Measurement Mode

If the app is executed, it will become this mode. In the mode, an altitude of a center position of a map is measured using a digital elevation model (DEM).
The app uses SRTM30 V2 to measure the altitude. A GSI's API can be used if you turn ON a “Use GSI's API” switch on a settings screen. The API can compute Fundamental Geospatial Data (FGD) in Japan.

■ GNSS Mode

Tap on “Get GNSS-Altitude” button will start the GNSS mode. In this mode, the altitude is calculated by GNSS. If you are using iPhone 3GS or earlier, a return value is an ellipsoidal height.

■ Settings

Unit - Meter and Foot.
Special Datum - 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 - You can use “Japan Plane Rectangular Coordinate System” instead of Latitude-Longitude.
Display Address - It displays address of current location. If this switch is off, it displays coordinates instead of the address.
Use GSI's API - the above‐mentioned.
Use GSI Tiles - Use GSI tiles instead of Apple Maps.
Update to Map Coordinates - It automatically updates coordinates in the “Jump to Point” page to a current position on the map.

■ About URL Scheme

(Format) alt://lat/lon

lat: Latitude (double value)
lon: Longitude (double value)

If the latitude is not in the range of ±90 degrees will replace the latitude and the longitude.

What’s New

Version 2.8.2

- Supported iPad Pro 3rd Generation.
- Revised a list of world cities.

Ratings and Reviews

J3lmn ,

Nice little app for altitude checker

Ever wonder what altitude is your destination? This app quickly shows you just that. Pretty simple.


Takafumi AMANO
299.5 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Japanese
Age Rating
Rated 4+
© 2013-2019 ASTI
In-App Purchases
  1. Remove Ads $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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