Junior Inventor - Guides&Ideas
v2.5.4 · 9.2 MB · code 1767173124
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File information
UpdatedJan 17, 2026
PublishedMar 19, 2021
Packagecom.hape.jrinventor
Versionv2.5.4 (1767173124)
Size9.2 MB
MD54ee834d330e439391b9bb4691ec10abf
Min SDK24
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA1C2:B1:E0:CE:2B:F7:35:0C:F5:64:22:7A:A9:34:23:AD:89:90:D6:33
SignerCN=Unknown, OU=Unknown, O=Hape, L=Unknown, ST=Unknown, C=Unknown
Total downloads10,000
This version10,000
DeveloperHape International AG
Age ratingEveryone
What's new in v2.5.4
Hey there! A new version with a new set of improvements coming your way:
• We added labels & badges for guides;
• Various in-app improvements for a fun experience.
If you love the app and find it useful – please rate the app!
• We added labels & badges for guides;
• Various in-app improvements for a fun experience.
If you love the app and find it useful – please rate the app!
Security scan
TRUSTED
- Developer signature verified 2026-01-17
- Signature SHA1 C2:B1:E0:CE:2B:F7:35:0C:F5:64:22:7A:A9:34:23:AD:89:90:D6:33
- File MD5 4ee834d330e439391b9bb4691ec10abf
How to install Junior Inventor - Guides&Ideas v2.5.4 on Android 7.0 Nougat+
Takes about 2 minutes. You'll need roughly 9.2 MB of free storage.
- Grab com.hape.jrinventor_1767173124.apk — hit the Download button above (9.2 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 4ee834d330e43939…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.hape.jrinventor_1767173124.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=Unknown, OU=Unknown, O=Hape, L=Unknown, ST=Unknown, C=Unknown. 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 Junior Inventor - Guides&Ideas — tap Open on the install screen, or find the Junior Inventor - Guides&Ideas icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for Junior Inventor - Guides&Ideas
- "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 7.0 Nougat 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.