InstaSub For Substitutes v3.0.3
APK · 18.1 MB · version code 79 · Android 4.1+ · uploaded Jun 26, 2026
- Signature matches the Google Play version Details
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File information
- Version
- v3.0.3 (79)
- Uploaded
- Jun 26, 2026
- Size
- 18.1 MB
- Requires
- Android 4.1+ (API 16)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- 0c10ba250700c7f68f0cc7900ee337ed
- Signing certificate (SHA-1)
- D3:8D:69:94:3D:C8:C8:A8:A7:50:EE:FC:E4:AD:2E:CD:95:D3:17:84
- Signed by
- CN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
- File name
- com-subzzapp-79-75366374-0c10ba250700c7f68f0cc7900ee337ed.apk
- Package
- com.subzzapp
- Downloads (all versions)
- 1K+
- Age rating
- PEGI 3 · Everyone
What's new in v3.0.3
New Features Include:
- Filter button implemented on Available, Schedule and Past screen
- Settings - School Settings, Categories Settings, Notification & Reminders, Training Guide
- Help - Get Started Guide, Support Center, Contact Us
- User Settings
- Feedback
- Report Issues
[IMPROVED]
- Bugs fixes and app performance enhancement
Permissions (14)
This version requests 14 permissions, 7 of them sensitive.
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Read calendar Sensitive android.permission.READ_CALENDAR
- Read media audio Sensitive android.permission.READ_MEDIA_AUDIO
- Read media images Sensitive android.permission.READ_MEDIA_IMAGES
- Read media video Sensitive android.permission.READ_MEDIA_VIDEO
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Write calendar Sensitive android.permission.WRITE_CALENDAR
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- Internal broadcast protection (app-defined) com.subzzapp.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- 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 Jun 26, 2026.
- Certificate from Google Play App Signing Google keeps the signing key for the developer, so the certificate carries Google's name.
Store checks
- Developer signature verified Jun 26, 2026
- Validated against Google Play Jun 26, 2026
- 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. AAPKs doesn't scan files itself.
How to install InstaSub For Substitutes on Android 4.1+
You'll need about 36.2 MB of free space.
- Download the APK — tap Download APK above (18.1 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-subzzapp-79-75366374-0c10ba250700c7f68f0cc7900ee337ed.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 0c10ba250700c7f68f0cc7900ee337ed. 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 InstaSub For Substitutes — 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.