Cool Machines - Physics puzzle
Cool physics puzzles wait to be solved
Ludetis UG (haftungsbeschränkt) · de.ludetis.android.coolmachines
- Signature matches the Google Play version Details
At a glance
- Latest version
- v1.3.8 (13080)
- Updated
- Aug 31, 2026 (1 month ago)
- APK size
- 33.9 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Category
- Puzzle (game)
- Listed since
- Mar 6, 2021 (at least)
- Permissions
- 8
- Website
- ludetis.de
- Developer contact
- [email protected]
- Privacy
- Developer's privacy policy
About this APK
Cool Machines - Physics puzzle is a game by Ludetis UG (haftungsbeschränkt) in the Puzzle 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, none of them sensitive. It asks for the same permissions as version 1.3.7. The game can read the advertising ID that ad and analytics services use.
What's new in v1.3.8
Description
From the listing uploaded by “appupdater”.
Version history
3 versions are listed, going back to v1.3.6.
Security & authenticity
Signing certificate
- Signature matches the Google Play version Checked by the source store on Aug 31, 2026.
- Certificate issued to “ludetis.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 31, 2026
- Validated against Google Play Aug 31, 2026
- Signed byCN=Uwe Post, OU=Development, O=ludetis.de, L=Essen, ST=NW, C=DE
- Signing certificate (SHA-1)B2:85:5B:51:DA:3A:90:D9:62:2E:84:92:D0:3F:3D:78:51:22:0B:28
- File MD56143c11e3e2fc47ec042c9d553533243
- 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 (8)
Cool Machines - Physics puzzle requests 8 permissions, none of them sensitive.
- Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
- Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
- Advertising ID com.google.android.gms.permission.AD_ID
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- Internal broadcast protection (app-defined) de.ludetis.android.coolmachines.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- View network connections android.permission.ACCESS_NETWORK_STATE
Required hardware & features
- Basic touch input android.hardware.faketouch
- Landscape screen android.hardware.screen.landscape
Cool Machines - Physics puzzle 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 Cool Machines - Physics puzzle 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 6143c11e3e2fc47ec042c9d553533243.
