Keyboard Designer: Keyboard
v5.7.1 · 16.7 MB · code 411
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File information
UpdatedFeb 13, 2026
PublishedAug 15, 2021
Packagede.humbergsoftware.keyboarddesigner
Versionv5.7.1 (411)
Size16.7 MB
MD5b6ebcee71f85ffad6571ca766380dcde
Min SDK21
Malware scanTRUSTED
Signature SHA1A5:97:36:30:80:C7:05:8B:C6:84:79:A1:9A:87:C9:9E:92:AC:05:74
SignerCN=Gerrit Humberg, OU=All the jobs, O=Humberg Software, L=Iserlohn, ST=NRW, C=DE
Total downloads100,000
This version100,000
DeveloperGerrit Humberg
Age ratingEveryone
What's new in v5.7.1
Revisions:
- Fixed keyboard width not being adjusted correctly when rotating Android 15 devices to landscape mode (Thanks to Nik!)
All changes in the app or on the website
- Fixed keyboard width not being adjusted correctly when rotating Android 15 devices to landscape mode (Thanks to Nik!)
All changes in the app or on the website
Security scan
TRUSTED
- Developer signature verified 2026-02-13
- Signature SHA1 A5:97:36:30:80:C7:05:8B:C6:84:79:A1:9A:87:C9:9E:92:AC:05:74
- File MD5 b6ebcee71f85ffad6571ca766380dcde
How to install Keyboard Designer: Keyboard v5.7.1 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 16.7 MB of free storage.
- Grab de.humbergsoftware.keyboarddesigner_411.apk — hit the Download button above (16.7 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 b6ebcee71f85ffad…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find de.humbergsoftware.keyboarddesigner_411.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=Gerrit Humberg, OU=All the jobs, O=Humberg Software, L=Iserlohn, ST=NRW, 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 Keyboard Designer: Keyboard — tap Open on the install screen, or find the Keyboard Designer: Keyboard icon in your app drawer.
Common install errors for Keyboard Designer: Keyboard
- "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 5.0 Lollipop 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.