Maths for Class 1
v2.1.0 · 7.5 MB · code 11
Verify you're human
Solve this to start the download.
File information
UpdatedJan 17, 2026
PublishedMar 3, 2021
Packagecom.oef.maths.one
Versionv2.1.0 (11)
Size7.5 MB
MD5139c6f15818a10e3d34b139995918150
Min SDK21
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA133:76:19:F1:C5:1F:58:DA:9F:31:93:7F:4B:60:A7:41:44:DB:92:96
SignerO=NovelSolutions
Total downloads100,000
This version100,000
DeveloperOpen Educational Forum
Age ratingEveryone
What's new in v2.1.0
New template
Crashes resolved
Crashes resolved
Security scan
TRUSTED
- Developer signature verified 2026-01-17
- Signature SHA1 33:76:19:F1:C5:1F:58:DA:9F:31:93:7F:4B:60:A7:41:44:DB:92:96
- File MD5 139c6f15818a10e3d34b139995918150
How to install Maths for Class 1 v2.1.0 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 7.5 MB of free storage.
- Grab com.oef.maths.one_11.apk — hit the Download button above (7.5 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 139c6f15818a10e3…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.oef.maths.one_11.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=NovelSolutions. 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 Maths for Class 1 — tap Open on the install screen, or find the Maths for Class 1 icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for Maths for Class 1
- "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.