CZ v4.02.550
APK · 96.2 MB · version code 40020550 · Android 7.0+ · uploaded Feb 20, 2026
- Signature matches the Google Play version Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v4.02.1016, uploaded Sep 9, 2026 — about 7 months after this one.
- Size: this file is 96.2 MB; the latest is 99.6 MB (3.3 MB larger).
- Android: this version needs Android 7.0+; the latest needs Android 8.0+. Use this one if your device runs an older Android release.
- Both versions request the same permissions.
File information
- Version
- v4.02.550 (40020550)
- Uploaded
- Feb 20, 2026
- Size
- 96.2 MB
- Requires
- Android 7.0+ (API 24)
- CPU support
- x86 64-bit, ARM 32-bit, ARM 64-bit
- Screen
- Small screens and larger
- MD5
- 4990c4926e164bedf17dff476d1267b9
- Signing certificate (SHA-1)
- 27:5B:8E:09:9A:1A:EF:46:0B:29:93:0D:AF:2B:88:D6:67:D1:72:17
- Signed by
- CN=Peter Tas, OU=CZ, O=CZ, L=Tilburg, ST=Brabant, C=NL
- File name
- nl-cz-app-40020550-73639364-4990c4926e164bedf17dff476d1267b9.apk
- Package
- nl.cz.app
- Downloads (all versions)
- 1M+
- Age rating
- PEGI 3 · Everyone
What's new in v4.02.550
We hebben technische verbeteringen doorgevoerd
Permissions (10)
This version requests 10 permissions, 1 of them sensitive.
- Camera Sensitive android.permission.CAMERA
- Control vibration android.permission.VIBRATE
- Full network access android.permission.INTERNET
- Internal broadcast protection (app-defined) nl.cz.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Show notifications android.permission.POST_NOTIFICATIONS
- Use biometric hardware android.permission.USE_BIOMETRIC
- Use fingerprint hardware android.permission.USE_FINGERPRINT
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Feb 20, 2026.
- Certificate issued to “CZ” This is the certificate of the Google Play version.
- Same certificate as the 4 other versions checked
Store checks
- Developer signature under review Mar 20, 2026
- Validated against Google Play Feb 20, 2026
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (4 other versions compared). AAPKs doesn't scan files itself.
How to install CZ on Android 7.0+
You'll need about 192.4 MB of free space.
- Download the APK — tap Download APK above (96.2 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap nl-cz-app-40020550-73639364-4990c4926e164bedf17dff476d1267b9.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be 4990c4926e164bedf17dff476d1267b9. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open CZ — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 7.0+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for x86 64-bit, ARM 32-bit, ARM 64-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.