Duolingo - Learn Languages Free v3.78.2
APK · 10.9 MB · version code 568 · Android 4.1+ · uploaded Apr 18, 2018
- Signature matches the Google Play version Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v3.106.5, uploaded Mar 12, 2020 — about 1 year after this one.
- Size: this file is 10.9 MB; the latest is 19.7 MB (8.8 MB larger).
- Android: this version needs Android 4.1+; the latest needs Android 4.4+. Use this one if your device runs an older Android release.
- The latest version asks for 4 more permissions: View Wi-Fi connections, Run foreground services, Modify audio settings, Google Play install referrer.
- The latest version no longer asks for: Read contacts, Run at startup.
File information
- Version
- v3.78.2 (568)
- Uploaded
- Apr 18, 2018
- Size
- 10.9 MB
- Requires
- Android 4.1+ (API 16)
- CPU support
- Any (no native code)
- Google Play services
- Required
- Screen
- Small screens and larger
- Android TV
- Supported
- MD5
- 27586e27bbdf63c6a63d8cd4acd70b3c
- Signing certificate (SHA-1)
- A0:0B:B7:D9:2E:38:90:9C:2F:6C:04:A8:05:58:89:0E:52:94:9C:D9
- Signed by
- CN=Vicki Cheung, O=Duolingo
- File name
- com-duolingo-568-36700538-27586e27bbdf63c6a63d8cd4acd70b3c.apk
- Package
- com.duolingo
- Downloads (all versions)
- 500M+
- Age rating
- PEGI 3 · Everyone
What's new in v3.78.2
Notice something different?
We gave ourselves a makeover with a fresh new design that features a brighter look, fun animations and an all-new Duo (our owl mascot)! Just in time to keep you going with that New Year's resolution. ; )
Game data (OBB)
This app needs extra data files (16.4 MB) next to the APK. Their download links appear once the download is unlocked.
- Main OBB
- main.395.com.duolingo.obb (8.2 MB)
- Main OBB MD5
- 17064e812dd03eb244bafd19dd0b6b1f
- Patch OBB
- patch.396.com.duolingo.obb (8.2 MB)
- Patch OBB MD5
- f498408692a530572e0e2a96075f3ffd
Permissions (19)
This version requests 19 permissions, 4 of them sensitive.
- Find accounts on the device Sensitive android.permission.GET_ACCOUNTS
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Read contacts Sensitive android.permission.READ_CONTACTS
- Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
- Badge read (custom) com.sec.android.provider.badge.permission.READ
- Badge write (custom) com.sec.android.provider.badge.permission.WRITE
- Control vibration android.permission.VIBRATE
- Full network access android.permission.INTERNET
- Home broadcast badge (custom) com.sonyericsson.home.permission.BROADCAST_BADGE
- In-app purchases (Google Play Billing) com.android.vending.BILLING
- Launcher read settings (custom) com.htc.launcher.permission.READ_SETTINGS
- Launcher update badge (custom) com.majeur.launcher.permission.UPDATE_BADGE
- Launcher update count (custom) com.anddoes.launcher.permission.UPDATE_COUNT
- Launcher update shortcut (custom) com.htc.launcher.permission.UPDATE_SHORTCUT
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Push messaging (app-defined) com.duolingo.permission.C2D_MESSAGE
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Jun 17, 2026.
- Certificate issued to “Duolingo” This is the certificate of the Google Play version.
- Same certificate as the 6 other versions checked
Store checks
- Developer signature not checked yet Jun 17, 2026
- Validated against Google Play Jun 17, 2026
- Antivirus scan passed Nov 3, 2020
- Tested by the source store's staff Aug 7, 2018
- Uploaded by “rodrivergara” Bronze tier · 1,703 followers · uploading since 2014
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (6 other versions compared). AAPKs doesn't scan files itself.
How to install Duolingo - Learn Languages Free on Android 4.1+
You'll need about 38.3 MB of free space (the APK plus 16.4 MB of game data).
- Download the APK — tap Download APK above (10.9 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap com-duolingo-568-36700538-27586e27bbdf63c6a63d8cd4acd70b3c.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be 27586e27bbdf63c6a63d8cd4acd70b3c. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Copy the game data — before the first launch, move the OBB files (16.4 MB), without renaming or unzipping, into Android/obb/com.duolingo/. On Android 11 and later many file managers can't open that folder; use the built-in Files app or copy it from a computer over USB.
- Open Duolingo - Learn Languages Free — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 4.1+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.