KnowledgeBase Builder Lite v7.12.1
APK · 13.9 MB · version code 119 · Android 5.0+ · uploaded Feb 27, 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 v8.3.4, uploaded Oct 4, 2026 — about 7 months after this one.
- Size: this file is 13.9 MB; the latest is 14.2 MB (251 KB larger).
- Both versions request the same permissions.
File information
- Version
- v7.12.1 (119)
- Uploaded
- Feb 27, 2026
- Size
- 13.9 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- 0fd0be07ca3c3a5009ee6b376a0e04b9
- Signing certificate (SHA-1)
- 76:34:74:B6:FE:EC:B7:3A:59:77:4A:3D:AA:99:FB:E7:B3:B8:4C:1F
- Signed by
- CN=Ingo Straub, OU=Software Development, O=InfoRapid (Ingo Straub Softwareentwicklung), L=Waiblingen, ST=Baden-Wuerttemberg, C=DE
- File name
- de-inforapid-knowledgebasebuilder-free-android-119-73722623-0fd0be07ca3c3a5009ee6b376a0e04b9.apk
- Package
- de.inforapid.knowledgebasebuilder.free.android
- Downloads (all versions)
- 100K+
- Age rating
- PEGI 3 · Everyone
What's new in v7.12.1
New: Give your diagrams a personal touch with a selection of high-quality new background patterns. New: You can now use the image assigned to the currently selected root item as the background image. These options can be found under: Format Diagram > Diagram > Background Image.
Permissions (2)
This version requests 2 permissions, none of them sensitive.
- Full network access android.permission.INTERNET
- Internal broadcast protection (app-defined) de.inforapid.knowledgebasebuilder.free.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Feb 27, 2026.
- Certificate issued to “InfoRapid (Ingo Straub Softwareentwicklung)” This is the certificate of the Google Play version.
- Same certificate as the 5 other versions checked
Store checks
- Developer signature verified Feb 27, 2026
- Validated against Google Play Feb 27, 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 (5 other versions compared). AAPKs doesn't scan files itself.
How to install KnowledgeBase Builder Lite on Android 5.0+
You'll need about 27.8 MB of free space.
- Download the APK — tap Download APK above (13.9 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 de-inforapid-knowledgebasebuilder-free-android-119-73722623-0fd0be07ca3c3a5009ee6b376a0e04b9.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 0fd0be07ca3c3a5009ee6b376a0e04b9. 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 KnowledgeBase Builder Lite — 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 5.0+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.