Release RAChecker Android 0.5.1 · x3kim/RAChecker

Standalone Android app — no PC or server needed. Install the APK and allow "install from unknown sources" (it is unsigned).

⚠️ Read this first

This app is early. It works, but:

Big files take minutes. Decompression runs in JavaScript. A multi-gigabyte disc image inside a .7z takes several minutes on a phone (a 1.6 GB image measures ≈1.5 min on a PC, noticeably longer on an older device). The scan shows unpacking progress in percent — it is working, not frozen. For a whole library, the desktop app is far faster.
Sync your disc systems. Disc images can only match if you selected and synced those systems in the Hash DB tab. If you used an earlier version, re-sync — disc systems were missing from the sync list before 0.5.0.
Still desktop-only: RAR archives, GameCube/Wii, CSO/RVZ/GCZ/GDI, split CUE/BIN, M3U, and CHDs whose data happens to be FLAC-compressed.

Bug reports are very welcome — please open an issue.

Zstandard CHDs now work. Recent chdman versions use zstd by default, so many current CHD files simply failed before — and the app wrongly blamed the image ("not a recognised disc image") instead of naming the real reason.
Large 7z archives no longer crawl or run out of memory. The compressed data is read in slices instead of all at once; a 1.6 GB disc image inside a 7z went from effectively unusable to a few minutes.
Unpacking progress in percent, so a slow archive no longer looks frozen.
Hash-DB counts now mean the same as in the desktop app (games you can earn achievements in), so the two no longer disagree for the same account.

7z archives are unpacked and hashed on the phone, including disc images stored inside them.
Disc systems added to the hash sync — without this a disc image hashed correctly but could never match anything.
Clear scan results: earns achievements · recognised game with no achievement set yet · system not synced yet · not known to RetroAchievements.
ZIP files using LZMA compression are now read too.
Content-based identification — every plausible hash for a file is computed and looked up, so a correctly dumped ROM matches regardless of how you organise your folders.
On-device disc hashing (CHD, ISO, PBP) for PlayStation, PS2, PSP, Saturn, Sega CD, Dreamcast, PC Engine CD, PC-FX, 3DO, Neo Geo CD and Atari Jaguar CD.
Quick Wins now lists games from your collection; Atari Lynx header fix; theme colour fix; changelog popup after an update.

Desktop app (Windows, full library scanning + DAT checks): see the latest release.