The is widely considered the ultimate digital field guide for birding in Europe, but finding a "full apk" outside of official channels can be risky. Official Recommendation

: Record your observations, including location (via GPS), date, and notes, to build your lifetime birding list.

; for example, the basic edition has been priced around £12.99, with various in-app purchases available for advanced maps and video libraries. The Birder's Secret: A Story