Altitude Checker

Name: Altitude Checker
Rating: 4 (4 reviews)
Author: Takafumi AMANO

Measure Altitude with GNSS

Free · In‑App Purchases · Designed for iPad

4 Ratings
Ages

4+
Years
Category

Lifestyle
Developer

Takafumi AMANO
Language

EN
+ 1 More
Size

295.6
MB

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.

Ratings & Reviews

4.0

out of 5

4 Ratings

Perfect for My Needs!
12/25/2025

Dawn30000
I wanted to scroll across a map to find elevations. That’s exactly what this app lets you do. As you scroll, it shows elevations on top of the app. Perfect for me. I’ll be driving in the winter and wanted to know elevations — because that’s where it’s likely to freeze, etc. I tried dozens of apps and found only this one who lets me do that. Many thanks to the developer!!!
Perfect for My Needs!
12/25/2025

Dawn30000

I wanted to scroll across a map to find elevations. That’s exactly what this app lets you do. As you scroll, it shows elevations on top of the app. Perfect for me. I’ll be driving in the winter and wanted to know elevations — because that’s where it’s likely to freeze, etc. I tried dozens of apps and found only this one who lets me do that. Many thanks to the developer!!!
As good as it get
02/11/2025

Wa11y555
Simple, accurate, unobtrusive ads. Point to any map location, get altitude, address, coordinates. Thank you developers!
As good as it get
02/11/2025

Wa11y555

Simple, accurate, unobtrusive ads. Point to any map location, get altitude, address, coordinates. Thank you developers!
Nice little app for altitude checker
08/30/2016

J3lmn
Ever wonder what altitude is your destination? This app quickly shows you just that. Pretty simple.
Nice little app for altitude checker
08/30/2016

J3lmn

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

- Supported iOS 26.

Version 3.0.2

Jan 2

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Data Linked to You

The following data may be collected and linked to your identity:
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Data Not Linked to You

The following data may be collected but it is not linked to your identity:
- Diagnostics