Proj4

Name: Proj4
Author: marco.corvi

Livemarco.corvi4 apps · 152.9K installsToolsFreecom.topodroid.proj4

proj4 coordinate converter

Alert me ★ Watch Open in Play ↗

Total installs: 2,010
Installs / day: 0
Rating: —★
Released: 18 Apr 2014
Last update: 8 Aug 2026
Countries: 29/30

Installs per day

gain of the exact counter

11 Oct 2026No change in the counterOur first day-to-day reading of the counter. The line starts with the next one.

Daily tracking since 10 Oct 2026 · history grows every day

Install history

exact counter from Google Play

1dAll

Dashed: estimate from the release date (no daily data before 10 Oct 2026) · time axis compressed before that day

Daily tracking since 10 Oct 2026 · history grows every day

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Live 29Listed, not installable 1Not listed 0

United Arab Emirates

Argentina

Australia

Bangladesh

Brazil

Canada

Colombia

Germany

Egypt

Spain

France

United Kingdom

Indonesia

India

Italy

Japan

Kenya

South Korea

Mexico

Nigeria

Philippines

Pakistan

Poland

Russia

Saudi Arabia

Thailand

Türkiye

United States

Vietnam

South Africa

Show all 30 countries ▾Show top 5 only ▴

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Data safety

declared by the developer on Google Play

No data shared with third parties
No data collected

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

2 in 2 groups

2 Sensitive0 Notable0 Routine

What this app can do with your phone

Read photos, videos, and other files saved in your phone's shared storage

Photos/Media/FilesSensitive1

Access to photos, videos, music and other files stored on your device

Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE

StorageSensitive1

Access to files, photos and media saved on your phone's storage

Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE

Read more · all 2 permissions Show less

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Download

Full description

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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