RTN Friend

Explore your RTK network, Convert coordinates, Survey external GNSS receivers

RTN Friend · com.rtnfriend

Not rated yet 500+ downloads v1.50 8.5 MB Android 5.0+ PEGI 3 · Everyone

Download APK 8.5 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v1.50 (150)
Updated: Sep 19, 2025 (1 year ago)
APK size: 8.5 MB
Requires: Android 5.0+ (API 21)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Graphics: OpenGL ES 2.0+
Category: Maps & Navigation (app)
Listed since: Dec 30, 2022 (at least)
Permissions: 16 (7 sensitive)
Website: rtnfriend.wordpress.com
Developer contact: [email protected]

About this APK

RTN Friend is an app by RTN Friend in the Maps & Navigation category, listed since at least December 2022. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 1.46, the minimum Android version rose from 4.0.3 to 5.0. It asks for 16 permissions, 7 of them sensitive, including precise location, approximate location and read media images. It asks for the same permissions as version 1.49. The app offers in-app purchases through Google Play.

What's new in v1.50

Status bar overlap fix

Description

From the listing uploaded by “appupdater”.

RTK Network status. Before traveling to a new job site it is good to know how RTK network works there ahead of time. Will the network be able to generate network solutions (VRS, MAC) or not ?, or it will just “close” rover to the nearest base, what will be the distance to the nearest base in this case ?. This app will get answers to both questions now, while you are at home. With RTN Friend you will know for sure whether you can count on your network at your destination or not. This app shows on a map Leica Spider (MAC type) master and auxiliary stations depending where you are! so you will see if you can trust MAC network geometry. Coordinate conversions between different coordinate systems, use coordinate systems transmitted by RTK network in 1021-1023-1025 messages. RTCM coordinate system can be downloaded and used for survey or coordinate transformation. User defined coordinate systems are available now. Point import from txt, csv files or manual key in. Point export as standard google share button Survey with Leica GGxx, Emlid Reach RS, South S660/S660P and other receivers. Stake out points and lines Please note this app will run free for 3 month after that it will be available at the subscription rate: 13 $ for 3 month. Please also note that you will not be able to access your projects without subscription after 3 month! please account for that. Manuals are available at https://rtnfriend.wordpress.com/ Please send your questions to [email protected]

Version history

4 versions are listed, going back to v1.46. Since v1.49 it requires Android 5.0+.

v1.50 LATEST Sep 19, 2025 8.5 MB TRUSTED v1.49 Sep 4, 2025 8.5 MB TRUSTED v1.48 Oct 30, 2024 7.7 MB TRUSTED v1.46 Jun 5, 2024 7.7 MB TRUSTED

All 4 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 19, 2025.
Certificate from Google Play App Signing Google keeps the signing key for the developer, so the certificate carries Google's name.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Sep 19, 2025
Validated against Google Play Sep 19, 2025
Signed byCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Signing certificate (SHA-1)BF:EC:BF:AB:B2:56:DF:B4:E2:DB:44:DF:0C:C9:3C:0D:A7:8B:30:8F
File MD5b27015707669d1dd414a7b899a07863e
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (16)

RTN Friend requests 16 permissions, 7 of them sensitive.

Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
Bluetooth connect Sensitive android.permission.BLUETOOTH_CONNECT
Bluetooth scan Sensitive android.permission.BLUETOOTH_SCAN
Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
Read media images Sensitive android.permission.READ_MEDIA_IMAGES
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Access mock location android.permission.ACCESS_MOCK_LOCATION
Bluetooth android.permission.BLUETOOTH
Bluetooth admin android.permission.BLUETOOTH_ADMIN
Change network state android.permission.CHANGE_NETWORK_STATE
Full network access android.permission.INTERNET
In-app purchases (Google Play Billing) com.android.vending.BILLING
Internal broadcast protection (app-defined) com.rtnfriend.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Read Google service settings com.google.android.providers.gsf.permission.READ_GSERVICES
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Bluetooth android.hardware.bluetooth
Basic touch input android.hardware.faketouch
Location android.hardware.location

RTN Friend APK: questions and answers

Is there a version of RTN Friend for older Android phones?

The current version needs Android 5.0 or later. Version 1.48 is the newest listed build that installs on Android 4.1 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 1.48 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is RTN Friend free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the RTN Friend APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is b27015707669d1dd414a7b899a07863e.