System One vAccordion
APK · 82.6 MB · version code 311 · Android 10+ · uploaded Mar 8, 2026
- Signature matches the Google Play version Details
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File information
- Version
- vAccordion (311)
- Uploaded
- Mar 8, 2026
- Size
- 82.6 MB
- Requires
- Android 10+ (API 29)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Graphics
- OpenGL ES 2.0+
- Screen
- Small screens and larger
- MD5
- 8e05f1f25a74525f6e0c9163eac36ae1
- Signing certificate (SHA-1)
- 23:1E:96:57:F1:51:12:75:35:E3:64:D4:22:8A:76:1F:A7:59:AD:95
- Signed by
- CN=Beatriz Macuco, OU=Mobile Dev, O=System One, L=Berlin, ST=Berlin, C=DE
- File name
- com-application-systemone-systemone-311-73854469-8e05f1f25a74525f6e0c9163eac36ae1.apk
- Package
- com.application.systemone.systemone
- Downloads (all versions)
- 5K+
- Age rating
- PEGI 3 · Everyone
What's new in vAccordion
- Timetable times now stay on one line
- Shows now display their duration ("e.g. '1 hour')
Permissions (21)
This version requests 21 permissions, 5 of them sensitive.
- Camera Sensitive android.permission.CAMERA
- Display over other apps Sensitive android.permission.SYSTEM_ALERT_WINDOW
- Find accounts on the device Sensitive android.permission.GET_ACCOUNTS
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Access notification policy android.permission.ACCESS_NOTIFICATION_POLICY
- Control vibration android.permission.VIBRATE
- Download without notification android.permission.DOWNLOAD_WITHOUT_NOTIFICATION
- 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) com.application.systemone.systemone.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- Run foreground services android.permission.FOREGROUND_SERVICE
- Schedule exact alarms android.permission.SCHEDULE_EXACT_ALARM
- Show notifications android.permission.POST_NOTIFICATIONS
- 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
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Mar 8, 2026.
- Certificate issued to “System One” This is the certificate of the Google Play version.
Store checks
- Developer signature verified Mar 8, 2026
- Validated against Google Play Mar 8, 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. AAPKs doesn't scan files itself.
How to install System One on Android 10+
You'll need about 165.2 MB of free space.
- Download the APK — tap Download APK above (82.6 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 com-application-systemone-systemone-311-73854469-8e05f1f25a74525f6e0c9163eac36ae1.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 8e05f1f25a74525f6e0c9163eac36ae1. 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 System One — 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 10+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for x86 32-bit, 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.