Prot-On

Access files protected with Prot-On from your phone or tablet.

Protección On-Line · com.proton

Not rated yet 10K+ downloads v3.5.1 16 MB Android 5.1+ PEGI 3 · Everyone

Download APK 16 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v3.5.1 (57)
Updated: Dec 8, 2025 (10 months ago)
APK size: 16 MB
Requires: Android 5.1+ (API 22)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Tools (app)
Listed since: Mar 18, 2021 (at least)
Permissions: 8 (2 sensitive)
Website: prot-on.com
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Prot-On is an app by Protección On-Line in the Tools category, listed since at least March 2021. 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.

It asks for 8 permissions, 2 of them sensitive: read shared storage and modify shared storage. Compared with version 3.4.0, it drops 1 permission: “Access all files”.

What's new in v3.5.1

Update communication requirements with Prot-On server Removed the request for MANAGE_EXTERNAL_STORAGE permission

Description

From the listing uploaded by “appupdater”.

Prot-On allows you to encrypt and control your files (photos, videos, audios, documents, text...etc) that you share, and to decide, and track, who and when can access them. You can view / play protected files directly on your mobile and keep control of any existing copies wherever they might be (in the cloud, in other phones, computers or storage devices). If you regret having sent a file you can take away access in an instant. It's free and very easy to use, you just have to download the application and create an account. If you need more information, contact with us: [email protected]

Version history

2 versions are listed, going back to v3.4.0.

v3.5.1 LATEST Dec 8, 2025 16 MB TRUSTED v3.4.0 May 30, 2024 22.2 MB TRUSTED

All 2 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Dec 8, 2025.
Certificate issued to “Proteccion On-line SL” This is the certificate of the Google Play version.
Same certificate as the other version checked

Store checks and file details

Developer signature verified Dec 8, 2025
Validated against Google Play Dec 8, 2025
Signed byCN=proton.prot-on.com, OU=Proteccion On-line SL, O=Proteccion On-line SL, L=Madrid, ST=Spain, C=ES
Signing certificate (SHA-1)04:A8:A4:4D:35:47:42:D6:99:A7:9C:65:BD:44:94:4F:FE:7E:38:9C
File MD5a36ad64b922a128abd8360c923a76fe0
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 (1 other version compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (8)

Prot-On requests 8 permissions, 2 of them sensitive.

Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Full network access android.permission.INTERNET
Prevent the device from sleeping android.permission.WAKE_LOCK
Use biometric hardware android.permission.USE_BIOMETRIC
Use fingerprint hardware android.permission.USE_FINGERPRINT
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Wi-Fi android.hardware.wifi

Prot-On APK: questions and answers

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 the Prot-On 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 other version checked. After downloading, check that the file's MD5 is a36ad64b922a128abd8360c923a76fe0.