Although I cannot find any apps for the iOS (Apple's iPad oder iPhone).
Search Google for something like mame32.zip or mame64.exe suiting the CPU of your computer. To use these romsets in other operating systems, especially Windows, you need to find, download and install a rom pack from 2021 manually. If you run Linux, different UNIX flavors or MacOS there will be MAME packages in your software manager already available. arcade emulator for various operating systems. It also works using the RetroPie - Retro-gaming on the Raspberry Pi, the GPD XD Plus or any other machine with a built-in software. You'll need an emulator to play these games ( les jeux vidéo in French, Videospiele in German, giocare ai videogiochi in Italian, videojuegos in Spanish or jogos de vídeo in Portuguese. You can find and download my favorite MAME roms from arcade video game here from the mid 1970s to late 1980s in one place.
Rolling into the 2020s there shall be some new files coming up soon. If you want to be up to date better find yourself a full set elsewhere. Yes, you can get them here, but while it's far from complete and the emulator receives updates every month, I update the images only once a year. Welcome retro gamer! If you came here asking yourself 'Where can I find the latest MAME rom sets for download', you came to the right place - sort of.