Polish grammar
v1.4.0 · 29.1 MB · code 41
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File information
UpdatedDec 2, 2025
PublishedMar 22, 2021
Packagecom.holucent.grammarpl
Versionv1.4.0 (41)
Size29.1 MB
MD545e6a2bd820d7bb729294313adab0ca3
Min SDK21
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA181:7A:E6:23:90:72:BF:E4:DB:42:21:FC:6E:EA:23:F1:0B:A7:A3:D1
SignerCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Total downloads100,000
This version100,000
DeveloperHolucent
Age ratingEveryone
What's new in v1.4.0
• New ZOO! Collect animal friends as rewards for correct answers.
• Choose your grading system: school grades or five-star ratings.
• Turn off the answer timer for a calmer learning experience.
• Improved dialogs and texts for an even better app experience.
• Choose your grading system: school grades or five-star ratings.
• Turn off the answer timer for a calmer learning experience.
• Improved dialogs and texts for an even better app experience.
Security scan
TRUSTED
- Developer signature verified 2025-12-02
- Signature SHA1 81:7A:E6:23:90:72:BF:E4:DB:42:21:FC:6E:EA:23:F1:0B:A7:A3:D1
- File MD5 45e6a2bd820d7bb729294313adab0ca3
How to install Polish grammar v1.4.0 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 29.1 MB of free storage.
- Grab com.holucent.grammarpl_41.apk — hit the Download button above (29.1 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 45e6a2bd820d7bb7…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.holucent.grammarpl_41.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=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US. 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 Polish grammar — tap Open on the install screen, or find the Polish grammar icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for Polish grammar
- "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.
- 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.