iKnow!
v5.6.1 · 16.6 MB · code 50238
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File information
UpdatedJan 16, 2026
PublishedJul 15, 2021
Packagecom.cerego.iknow
Versionv5.6.1 (50238)
Size16.6 MB
MD52d6a67e3829345630e7eeaed7064b3f1
Min SDK23
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA1C8:17:53:F9:ED:CA:44:56:6A:A5:F3:77:11:97:11:AE:1B:F8:1F:D1
SignerO=Cerego Japan Inc., L=Shibuya, ST=Tokyo, C=JP
Total downloads100,000
This version100,000
DeveloperDMM 英会話
Age ratingEveryone
What's new in v5.6.1
・ Fixes some crashes.
・ Fixes UI not displaying correctly in some tablets.
・ Fixes UI not displaying correctly in some tablets.
Security scan
TRUSTED
- Developer signature verified 2026-01-16
- Signature SHA1 C8:17:53:F9:ED:CA:44:56:6A:A5:F3:77:11:97:11:AE:1B:F8:1F:D1
- File MD5 2d6a67e3829345630e7eeaed7064b3f1
How to install iKnow! v5.6.1 on Android 6.0 Marshmallow+
Takes about 2 minutes. You'll need roughly 16.6 MB of free storage.
- Grab com.cerego.iknow_50238.apk — hit the Download button above (16.6 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 2d6a67e382934563…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.cerego.iknow_50238.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 O=Cerego Japan Inc., L=Shibuya, ST=Tokyo, C=JP. 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 iKnow! — tap Open on the install screen, or find the iKnow! icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for iKnow!
- "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 6.0 Marshmallow 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.