Spiny apps are great
I have 5 Spiny apps and they all use the same interface which is very easy to use. Species can be identified and sightings logged with your own pictures. I especially like the ability to compare pictures of different species to help identify what you are looking at. It would be even better though, if it were possible to flick through all the pictures available and not just the ones selected. E.g. you may wish to compare the top of a butterfly or mushroom, the underneath and then the distribution.