Proj4

Proj4

marco.corvi
Aug 13, 2026
  • 1.7 MB

    File Size

  • 0/33
    Security
  • Everyone

  • Android 5.0+

    Android OS

About Proj4

proj4 coordinate converter

Simple coordinate converter based on the Proj4 library http://http://trac.osgeo.org/proj

The basic feature is the coversion of coordinates between two Coordinate Reference Systems. It includes the computation of the current megnetic declination based on WMM data.

The coordinates can be imported from MobileTopographer point lists.

The point can be visualized on maps/earth.

Java wrapper for proj4 by Martin Deruisseaux (2011) http://www.geoapi.org/geoapi-proj4/index.html

The app includes a limited number of Coordinate Reference Systems.

Custom Coordinate Reference Systems, in proj 4 sytax, can be added to the app.

See https://sites.google.com/site/speleoapps/home/proj4

Details and contacts: https://sites.google.com/site/speleoapps/home

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What's new in the latest 1.1.35

Last updated on Aug 13, 2026
Minor bug fixes and improvements. Install or update to the newest version to check it out!
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Videos and Screenshots

  • Proj4 poster
  • Proj4 screenshot 1
  • Proj4 screenshot 2
  • Proj4 screenshot 3

Proj4 APK Information

Latest Version
1.1.35
Category
Tools
Android OS
Android 5.0+
File Size
1.7 MB
Developer
marco.corvi
Available on
Content Rating
Everyone
Security Report
0/33
Scan Result: Secure
No security vendors flagged this file as malicious
No Virus
No Spyware
No Malware
No Virus
No Spyware
No Malware
Scan Date:Aug 13, 2026
Package Name:com.topodroid.proj4
SHA-256:99edd8e842713293e00402c38dd10afcab95c5203a2acfe478fc34289d64c6e6
SHA-1:d3e545bebc9f36f1ad7ba76820df4bc5d7363225
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Old Versions of Proj4

1.7 MBAug 13, 2026
Download
2.0 MBApr 7, 2021
Download
2.0 MBMar 5, 2021
Download
2.0 MBFeb 6, 2020
Download
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