Company Spiny Software Ltd created these great apps:
Chirp! Bird Song of Britain and Europe (original), Chirp! Bird Song USA, Animal Sounds Around The World, Birds of Britain Pro, Chirp! Bird Songs & Calls USA, Chirp! Bird Songs UK & Europe, Chirp! Bird Songs Canada, Birds of Britain Lite, Birds of Britain Pocket Guide, Vogels in Nederland Pro, Butterfly Guide - Europe, Vogels in Nederland - Zakgids, Butterflies & Day Moths UK, ChirpOMatic - Birdsong Europe, Zwitschomat - Vogelerkennung, Kvitteromat - Fågelsång ID, Kvitromat - Fuglesang ID, Mushrooms & other Fungi UK - A Guide From iSpiny, Mushrooms & other Fungi UK, TjilpOMatic - Vogelgezang ID, CuiCuiMatique chants d'oiseaux, ChirpOMatic - BirdSong USA, ChirpOMatic Caribbean, ChirpOMatic - Australian birds, and others..