Prism Surveys v12.9
APK · 18.7 MB · version code 25 · Android 4.4+ · uploaded May 1, 2025
- Same certificate as v13.0, which matches Google Play 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 v13.0, uploaded Sep 24, 2025 — about 5 months after this one.
- Size: this file is 18.7 MB; the latest is 18.7 MB (43 KB smaller).
- Android: this version needs Android 4.4+; the latest needs Android 7.0+. Use this one if your device runs an older Android release.
- The latest version no longer asks for: Set orientation.
File information
- Version
- v12.9 (25)
- Uploaded
- May 1, 2025
- Size
- 18.7 MB
- Requires
- Android 4.4+ (API 19)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Screen
- Small screens and larger
- MD5
- d2e08d7a74a242514ea8cb6bb229e7a3
- Signing certificate (SHA-1)
- 0F:6F:88:90:1D:21:05:F1:36:31:7A:B6:F2:64:12:94:07:F8:3E:40
- Signed by
- CN=George Guruianu, OU=CFS, O=CFS, L=London, ST=London, C=UK
- File name
- prism-core-25-70566700-d2e08d7a74a242514ea8cb6bb229e7a3.apk
- Package
- Prism.core
- Downloads (all versions)
- 100+
- Age rating
- PEGI 3 · Everyone
What's new in v12.9
Improvements:
1. DateSelector UI changes.
2. App works on latest versions of Android OS
Permissions removed for improved privacy:
- CAMERA
- READ_MEDIA_IMAGES
Essential permission still required:
- WRITE_EXTERNAL_STORAGE (for saving your files/surveys)
Permissions (4)
This version requests 4 permissions, 1 of them sensitive.
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Full network access android.permission.INTERNET
- Set orientation android.permission.SET_ORIENTATION
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Certificate issued to “CFS” This is the certificate of the Google Play version.
- Same certificate as v13.0, which matches Google Play v13.0
Store checks
- Developer signature verified May 1, 2025
- 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 (1 other version compared). AAPKs doesn't scan files itself.
How to install Prism Surveys on Android 4.4+
You'll need about 37.5 MB of free space.
- Download the APK — tap Download APK above (18.7 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 prism-core-25-70566700-d2e08d7a74a242514ea8cb6bb229e7a3.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 d2e08d7a74a242514ea8cb6bb229e7a3. 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 Prism Surveys — 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 4.4+). 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.