CHDroid is an Android app that converts bulky ISO disc images into smaller CHD files, freeing up storage space for more ROMs on mobile devices. Previously requiring a PC, this conversion can now be done entirely on Android. CHD files are natively supported by popular emulators like DuckStation, Flycast, and PPSSPP, so no decompression is needed before playing. The app also supports converting CHD files back to ISO and features an intuitive UI. CHDroid v1.1.0 recently exited beta.
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The compression app lets you fit more ISO files on your device by converting them into CHDs229 Impressions