The Ultimate Synthesizers Database app for iPhone and iPad
The Ultimate Synthesizers Database provides detailed descriptions of a massive (over 730) list of synthesisers. It covers both analog and digital synthesizers, vintage or not, with 17 fields of general details giving information for everything that defines a synthesizer (synthesis type, sound generator, polyphony and multitimbrality, memory, storage and expansion options, and much more-even dimensions and weight details), plus a general description/review for each synthesizer.
No internet connection required.