LineStar DFS & Props Optimizer v3.4.39
APK · 19.1 MB · version code 1789 · Android 4.1+ · uploaded Dec 11, 2025
- 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 v3.7.8, uploaded Oct 3, 2026 — about 10 months after this one.
- Size: this file is 19.1 MB; the latest is 18.7 MB (401.6 KB smaller).
- Android: this version needs Android 4.1+; the latest needs Android 6.0+. Use this one if your device runs an older Android release.
- The latest version asks for 8 more permissions: Access adservices ad id, Access adservices attribution, Show notifications, Use biometric hardware, Use fingerprint hardware, Modify shared storage, Internal broadcast protection (app-defined), Advertising ID.
File information
- Version
- v3.4.39 (1789)
- Uploaded
- Dec 11, 2025
- Size
- 19.1 MB
- Requires
- Android 4.1+ (API 16)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- e050093846c4963fd810b0afd5b3be95
- Signing certificate (SHA-1)
- 95:E3:D8:4F:0C:85:98:0B:05:DE:8C:6C:1D:82:DA:00:65:1A:0E:25
- Signed by
- CN=Peter Groset, OU=c0smosis, O=c0smosis, L=Carlsbad, ST=California, C=CA
- File name
- com-fantasysportsco-yahoodf-1789-72763882-e050093846c4963fd810b0afd5b3be95.apk
- Package
- com.fantasysportsco.yahoodf
- Downloads (all versions)
- 10K+
- Age rating
- PEGI 3 · Everyone
What's new in v3.4.39
- Perfect Lineups converted to a dialog.
- Added an all new Perfect Lineup Summary to indicate what perfect lineups have in common including position stacking.
- Chat has been updated a bit again.
- Easier to access tools, with buttons available via the projections area. More tools will be moving here from the menu once they are updated.
- Other small tweaks and fixes.
- More updates coming soon.
If you find any issues, please let us know: [email protected]
Permissions (9)
This version requests 9 permissions, none of them sensitive.
- Control vibration android.permission.VIBRATE
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- In-app purchases (Google Play Billing) com.android.vending.BILLING
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- Run foreground services android.permission.FOREGROUND_SERVICE
- 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 Dec 11, 2025.
- Certificate issued to “c0smosis” This is the certificate of the Google Play version.
- Same certificate as the 5 other versions checked
Store checks
- Developer signature verified Dec 11, 2025
- Validated against Google Play Dec 11, 2025
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (5 other versions compared). AAPKs doesn't scan files itself.
How to install LineStar DFS & Props Optimizer on Android 4.1+
You'll need about 38.1 MB of free space.
- Download the APK — tap Download APK above (19.1 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-fantasysportsco-yahoodf-1789-72763882-e050093846c4963fd810b0afd5b3be95.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 e050093846c4963fd810b0afd5b3be95. 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).
- Open LineStar DFS & Props Optimizer — 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.