System One
vAccordion · 82.6 MB · code 311
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File information
UpdatedMar 8, 2026
PublishedMar 13, 2021
Packagecom.application.systemone.systemone
VersionvAccordion (311)
Size82.6 MB
MD58e05f1f25a74525f6e0c9163eac36ae1
Min SDK29
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA123:1E:96:57:F1:51:12:75:35:E3:64:D4:22:8A:76:1F:A7:59:AD:95
SignerCN=Beatriz Macuco, OU=Mobile Dev, O=System One, L=Berlin, ST=Berlin, C=DE
Total downloads5,000
This version5,000
DeveloperSystem One SaaS GmbH
Age ratingEveryone
What's new in vAccordion
- Timetable times now stay on one line
- Shows now display their duration ("e.g. '1 hour')
- Shows now display their duration ("e.g. '1 hour')
Security scan
TRUSTED
- Developer signature verified 2026-03-08
- Signature SHA1 23:1E:96:57:F1:51:12:75:35:E3:64:D4:22:8A:76:1F:A7:59:AD:95
- File MD5 8e05f1f25a74525f6e0c9163eac36ae1
How to install System One vAccordion on Android 10+
Takes about 2 minutes. You'll need roughly 82.6 MB of free storage.
- Grab com.application.systemone.systemone_311.apk — hit the Download button above (82.6 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches 8e05f1f25a74525f…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.application.systemone.systemone_311.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read CN=Beatriz Macuco, OU=Mobile Dev, O=System One, L=Berlin, ST=Berlin, C=DE. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open System One — tap Open on the install screen, or find the System One icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for System One
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android 10 or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.
- Works on one phone but not another — this build ships x86/x86-64/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.