Libby, the Library App
v9.1.0 · 3.8 MB · code 910000
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File information
UpdatedMar 11, 2026
PublishedJan 23, 2021
Packagecom.overdrive.mobile.android.libby
Versionv9.1.0 (910000)
Size3.8 MB
MD57e4985fe48282c4a9e1c03bec91bb359
Min SDK25
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA125:0A:C4:92:97:8F:FC:6C:24:6C:AA:40:F9:5F:24:5C:DE:92:1C:1A
SignerCN=Android Mobile OMC Application, OU=Code Signing Services, O="OverDrive, Inc.", L=Cleveland, ST=Ohio, C=US
Total downloads10,000,000
This version10,000,000
DeveloperOverDrive, Inc.
Age ratingEveryone
What's new in v9.1.0
Bug fixes, performance optimizations, and preparation for our next round of features. Thanks for supporting your local libraries!
Security scan
TRUSTED
- Developer signature verified 2026-03-11
- Signature SHA1 25:0A:C4:92:97:8F:FC:6C:24:6C:AA:40:F9:5F:24:5C:DE:92:1C:1A
- File MD5 7e4985fe48282c4a9e1c03bec91bb359
How to install Libby, the Library App v9.1.0 on Android API 25+
Takes about 2 minutes. You'll need roughly 3.8 MB of free storage.
- Grab com.overdrive.mobile.android.libby_910000.apk — hit the Download button above (3.8 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 7e4985fe48282c4a…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.overdrive.mobile.android.libby_910000.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 Mobile OMC Application, OU=Code Signing Services, O="OverDrive, Inc.", L=Cleveland, ST=Ohio, 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 Libby, the Library App — tap Open on the install screen, or find the Libby, the Library App icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for Libby, the Library App
- "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 API 25 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.