Just as I had written up a rather complicated method of converting TZX (and similar) files into fast-loading WAV files, this little beauty turns up. Presenting ‘Speccy Tape’ for iOS by Wojciech Lazarski.
Speccy Tape provides a search interface to World of Spectrum, downloads the game you’re looking for and then plays back the TZX as audio. Hook up your Speccy to your iDevice and LOAD “”. Beautifully simple. You can keep the TZX files locally once downloaded so soon you can have a little library of ZX Spectrum games on your iDevice ready to load up at a moment’s notice. Unzipping is also handled elegantly.
It’s free too!