CASSY App

Use your CASSY with all sensors on a tablet or smartphone.

LD DIDACTIC GmbH · de.ld_didactic.cassyapp

Not rated yet 5K+ downloads v1.19 21.6 MB Android 5.0+ PEGI 3 · Everyone

Download APK 21.6 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v1.19 (1314)
Updated: Sep 30, 2026 (9 days ago)
APK size: 21.6 MB
Requires: Android 5.0+ (API 21)
CPU support: ARM 32-bit, ARM 64-bit
Category: Education (app)
Listed since: Oct 29, 2020 (at least)
Permissions: 3 (2 sensitive)
Website: ld-didactic.de
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

CASSY App is an app by LD DIDACTIC GmbH in the Education category, listed since at least October 2020. It includes native code for ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

It asks for 3 permissions, 2 of them sensitive: read shared storage and modify shared storage.

What's new in v1.19

Saving and sharing experiments is now even easier. The evaluations are easier to find via a new button. Opening experiments now also works reliably under Android 12.

Description

From the listing uploaded by “appupdater”.

Use your CASSY with all sensors on a tablet or smartphone. The CASSY App allows to control your CASSY and display the measured values in analog/digital displays, tables and diagrams on your tablet or smartphone. You evaluate your data and store and share your results – without any PC. All CASSY sensors for physics, chemistry and biology are supported, e.g. voltage, current, force, path, velocity, acceleration, magnetic field, pH value, conductivity, pulse, skin resistance. The CASSY App supports the following CASSYs: - Mobile-CASSY 2 WLAN - Sensor-CASSY mit WLAN-Adapter - Power Analyser CASSY Measuring with the CASSY App is simple: - Connect your CASSY to the same WiFi network as the tablet or smartphone, - enter the PIN displayed by the device or select the device in the app, - start the measurement. - Measured values can be stored, loaded and shared. - The file format *.labm is compatible with Mobile-CASSY 2, Power Analyser CASSY and CASSY Lab 2. - Files can also be loaded from and saved to a WebDAV server. - Numerous measurement examples help you get started. A compatible CASSY and the sensors are available from LD DIDACTIC GmbH. For more information, please visit our website.

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 30, 2026.
Certificate issued to “LD DIDACTIC GmbH” This is the certificate of the Google Play version.

Store checks and file details

Developer signature verified Sep 30, 2026
Validated against Google Play Sep 30, 2026
Signed byCN=Michael Hund, OU=Unknown, O=LD DIDACTIC GmbH, L=Huerth, ST=Nordrhein-Westfalen, C=DE
Signing certificate (SHA-1)FF:E8:95:11:C9:1A:1B:F8:B2:E0:41:2C:6B:9C:9D:56:42:3F:C9:6F
File MD556f15ca06dc43c0639fe3a06cc335854
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. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (3)

CASSY App requests 3 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

Required hardware & features

Basic touch input android.hardware.faketouch

CASSY App 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 CASSY App 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. After downloading, check that the file's MD5 is 56f15ca06dc43c0639fe3a06cc335854.