inSign

The app is used for the handwritten electronic signing of a PDF document.

iS2 AG · de.is2.insign

Not rated yet 100K+ downloads v3.80.1 13.3 MB Android 5.0+ PEGI 3 · Everyone

Download APK 13.3 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v3.80.1 (38001)
Updated: Aug 14, 2026 (2 months ago)
APK size: 13.3 MB
Requires: Android 5.0+ (API 21)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Business (app)
Listed since: Jun 12, 2021 (at least)
Permissions: 14 (4 sensitive)
Website: is2.de
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

inSign is an app by iS2 AG in the Business category, listed since at least June 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.

Since version 3.57.1, the minimum Android version rose from 4.4 to 5.0. It asks for 14 permissions, 4 of them sensitive, including precise location, camera and approximate location. It asks for the same permissions as version 3.80.0.

What's new in v3.80.1

Bugfix for older android devices

Description

From the listing uploaded by “appupdater”.

The inSign app is used for the handwritten electronic signing of PDF documents. Important note: This app cannot be run independently but serves as supplement to the web application "inSign - Electronic Signature". Go digital - get inSign! inSign - making contracts as easy as pie! No long waiting times for signatures, no unnecessary paper - sign digitally any time and anywhere. Made in Germany, GDPR-compliant and legally secure. Simply try it for yourself at www.getinsign.de.

Version history

5 versions are listed, going back to v3.57.1. Since v3.72.1 it requires Android 5.0+.

v3.80.1 LATEST Aug 14, 2026 13.3 MB TRUSTED v3.80.0 Aug 6, 2026 13.3 MB TRUSTED v3.79.0 Aug 4, 2026 13.4 MB TRUSTED v3.72.1 Jan 21, 2026 13.4 MB TRUSTED v3.57.1 Oct 15, 2024 9.4 MB TRUSTED

All 5 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Aug 14, 2026.
Certificate issued to “www.is2.de” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Aug 14, 2026
Validated against Google Play Aug 14, 2026
Signed byCN=Intelligent Solution Services AG, O=www.is2.de, C=DE
Signing certificate (SHA-1)90:8E:75:F5:51:78:4C:2D:91:2F:54:BC:4A:2B:4B:A2:59:F9:A1:88
File MD5a6937fa27a099c33f8d1c57ea482de31
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 (14)

inSign requests 14 permissions, 4 of them sensitive.

Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
Camera Sensitive android.permission.CAMERA
Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
Access gps android.permission.ACCESS_GPS
Access location android.permission.ACCESS_LOCATION
Change network state android.permission.CHANGE_NETWORK_STATE
Change wifi state android.permission.CHANGE_WIFI_STATE
Foreground service location android.permission.FOREGROUND_SERVICE_LOCATION
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) de.is2.insign.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Run foreground services android.permission.FOREGROUND_SERVICE
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
Location android.hardware.location
Landscape screen android.hardware.screen.landscape
Portrait screen android.hardware.screen.portrait
Wi-Fi android.hardware.wifi

inSign APK: questions and answers

Is there a version of inSign for older Android phones?

The current version needs Android 5.0 or later. Version 3.57.1 is the newest listed build that installs on Android 4.4 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 3.57.1 · 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 the inSign 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 a6937fa27a099c33f8d1c57ea482de31.