More importantly, Android users can now CHDs on the device itself. A user with a USB optical drive and an OTG cable can rip a physical disc using an app like dd or ISO Extractor , then immediately convert it to CHD using chdman —all without a PC. This democratizes preservation for users in regions without desktop computers.
: 4.2/5 stars
Note: You can extract chdman from a MAME Android build or cross-compile it (see step 3 in compile guide).