I have developed an iPhone app, called FNDMobile, that is a database of black and white films and development times, that maybe some of you could find interesting.

The embedded database includes my own data regarding 17 different films, and 296 combinations of different developers, iso, and temperatures.

The database is fully editable, so you can add your own films and development times.

The price is the lowest possible ($0.99 USD) and should be available worldwide.

I hope you find it interesting.

By the way, some users have suggested that a flash distance calculator could be interesting. Personally, I do not use flash, but, what do you think?