Contacts Optimizer v6.1.403
APK · 1.1 MB · version code 403 · Android 5.0+ · uploaded Jul 23, 2024
- The same certificate signs apps from 18 different developers Details
The source store hasn't rated this file as safe (its rating is Unknown). Prefer a version rated Trusted. See other versions.
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Compared with the latest version
The latest version is v6.1.401, uploaded Jun 8, 2024.
- Size: this file is 1.1 MB; the latest is 862.3 KB (313.4 KB smaller).
- Android: this version needs Android 5.0+; the latest needs Android 4.0+.
- The latest version asks for 1 more permission: In-app purchases (Google Play Billing).
File information
- Version
- v6.1.403 (403)
- Uploaded
- Jul 23, 2024
- Size
- 1.1 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- df4534093ca7b6245c1c6ce4c4c9b1b3
- Signing certificate (SHA-1)
- 60:C2:CA:51:52:29:DA:14:CA:A5:52:7A:7B:8A:A8:6D:E3:BE:E7:3C
- Signed by
- CN="rockz5555 OU=Droid Freedom Unit O=Droid Freedom Inc L=Unknown S=Unknown C=LK"
- File name
- com-compelson-optimizer-403-68310557-df4534093ca7b6245c1c6ce4c4c9b1b3.apk
- Package
- com.compelson.optimizer
- Downloads (all versions)
- 1M+
- Age rating
- PEGI 3 · Everyone
What's new in v6.1.403
Updated for Android 13
Permissions (7)
This version requests 7 permissions, 3 of them sensitive.
- Find accounts on the device Sensitive android.permission.GET_ACCOUNTS
- Read contacts Sensitive android.permission.READ_CONTACTS
- Write contacts Sensitive android.permission.WRITE_CONTACTS
- Full network access android.permission.INTERNET
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Read sync settings android.permission.READ_SYNC_SETTINGS
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Unknown
Signing certificate
- Certificate issued to “rockz5555 OU=Droid Freedom Unit O=Droid Freedom Inc L=Unknown S=Unknown C=LK” Not the developer's name (“COMPELSON Labs”). Names in certificates can't be verified, so this alone proves nothing.
- The same certificate signs apps from 18 different developers Developers sign only their own apps, so this almost always means the files were re-signed by someone else — often after being modified.
- Other versions use a different certificate v6.1.401. Android normally won't update an installed app with a file signed by another certificate, and a new certificate can mean a different publisher. v6.1.401
Store checks
- Developer signature not checked yet Jul 23, 2024
- Uploaded by “aplicationpaidprofree” Bronze tier · 1,631 followers · uploading since 2018
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (1 other version compared). AAPKs doesn't scan files itself.
How to install Contacts Optimizer on Android 5.0+
You'll need about 2.3 MB of free space.
- Download the APK — tap Download APK above (1.1 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-compelson-optimizer-403-68310557-df4534093ca7b6245c1c6ce4c4c9b1b3.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 df4534093ca7b6245c1c6ce4c4c9b1b3. 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?”. This file has no malware rating from the source store. If Play Protect warns about it, tap Cancel. 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 Contacts 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 5.0+). 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.