Reading Trainer: Speed Reading v2.3.9
APK · 39.9 MB · version code 1783 · Android 6.0+ · uploaded Sep 27, 2026
- Signature matches the Google Play version Details
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Compared with the latest version
The latest version is v2.4.3, uploaded Aug 16, 2026.
- Size: this file is 39.9 MB; the latest is 42.7 MB (2.8 MB larger).
- Android: this version needs Android 6.0+; the latest needs Android 7.0+. Use this one if your device runs an older Android release.
- The latest version asks for 7 more permissions: Access adservices ad id, Access adservices attribution, Show notifications, Record audio (microphone), Read Google service settings, Commondata get common data (custom), Mapsagent read app info (custom).
File information
- Version
- v2.3.9 (1783)
- Uploaded
- Sep 27, 2026
- Size
- 39.9 MB
- Requires
- Android 6.0+ (API 23)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- d6193a1078620ab725b776b915b32c83
- Signing certificate (SHA-1)
- 63:B6:90:F3:A9:B2:8E:CA:FD:02:0A:A2:E2:FE:DF:F3:EC:0D:F6:9B
- Signed by
- O=HeKu IT GmbH, L=Garching, C=DE
- File name
- com-heku-readingtrainer-1783-76821652-d6193a1078620ab725b776b915b32c83.apk
- Package
- com.heku.readingtrainer
- Downloads (all versions)
- 100K+
- Age rating
- PEGI 3 · Everyone
What's new in v2.3.9
Transform your reading journey with our latest update!
Try Anti-Regression – our new reading mode that trains forward-only reading without backtracking. Build pace and focus while maintaining comprehension.
Permissions (11)
This version requests 11 permissions, 1 of them sensitive.
- Read phone status and identity Sensitive android.permission.READ_PHONE_STATE
- Advertising ID com.google.android.gms.permission.AD_ID
- 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
- Internal broadcast protection (app-defined) com.heku.readingtrainer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
- 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 Sep 27, 2026.
- Certificate issued to “HeKu IT GmbH” This is the certificate of the Google Play version.
- Same certificate as the 6 other versions checked
Store checks
- Developer signature under review Sep 27, 2026
- Validated against Google Play Sep 27, 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 (6 other versions compared). AAPKs doesn't scan files itself.
How to install Reading Trainer: Speed Reading on Android 6.0+
You'll need about 79.9 MB of free space.
- Download the APK — tap Download APK above (39.9 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-heku-readingtrainer-1783-76821652-d6193a1078620ab725b776b915b32c83.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 d6193a1078620ab725b776b915b32c83. 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 Reading Trainer: Speed Reading — 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 6.0+). 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.