An essential resource
This app is essentially an update on Sue Churchill’s excellent book. The text is detailed and informative. It includes family and species keys, maps from Batmap, measurements, photos and audiograms. I’ve used it to key several bats now and learned a bit in the process. The one glitch I’ve encountered is when switching screens (e.g. between the app and photos) it resets to the splash screen forcing you to step back through to the family, bioregion and species each time - and I find a need to flick backwards and forwards on each trait (iphone 15 pm ios 18.0.1). This is a dreary bug that could be easily remedied.