Chess Studio v3.0.6
APK · 17.4 MB · version code 3000047 · Android 5.0+ · uploaded May 9, 2026
The source store flagged this file with a security warning (Warning). We recommend not installing it. See other versions.
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v3.0.7, uploaded Aug 29, 2026 — about 4 months after this one.
- Size: this file is 17.4 MB; the latest is 19.6 MB (2.2 MB larger).
- Both versions request the same permissions.
File information
- Version
- v3.0.6 (3000047)
- Uploaded
- May 9, 2026
- Size
- 17.4 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Graphics
- OpenGL ES 2.0+
- Screen
- Small screens and larger
- MD5
- ec14a8816c7508e206205bb53e3a777a
- Signing certificate (SHA-1)
- DA:9D:CE:57:A3:FD:39:38:88:8D:DF:AB:E0:03:47:67:D0:2E:FB:6F
- Signed by
- CN=TempCertificate
- File name
- air-com-gambitbooks-chessstudio-3000047-74695858-ec14a8816c7508e206205bb53e3a777a.apk
- Package
- air.com.gambitbooks.chessstudio
- Downloads (all versions)
- 10K+
- Age rating
- PEGI 3 · Everyone
What's new in v3.0.6
- Added an info dialog before downloading store data
- Internal updates
Permissions (4)
This version requests 4 permissions, none of them sensitive.
- Full network access android.permission.INTERNET
- In-app purchases (Google Play Billing) com.android.vending.BILLING
- Internal broadcast protection (app-defined) air.com.gambitbooks.chessstudio.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Warning
Signing certificate
- Signature matches the Google Play version Checked by the source store on May 9, 2026.
- Certificate issued to “TempCertificate” This is the certificate of the Google Play version.
- Same certificate as the other version checked
Store checks
- Developer signature check failed May 9, 2026
- Validated against Google Play May 9, 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 (1 other version compared). AAPKs doesn't scan files itself.
How to install Chess Studio on Android 5.0+
You'll need about 34.8 MB of free space.
- Download the APK — tap Download APK above (17.4 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 air-com-gambitbooks-chessstudio-3000047-74695858-ec14a8816c7508e206205bb53e3a777a.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 ec14a8816c7508e206205bb53e3a777a. 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?”. The source store flagged this file with a security warning; we recommend not installing it. If Play Protect blocks 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 Chess Studio — 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.
- “App not compatible with your device” — this build contains native code for x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source; for this file we recommend not to.