Déxter is described as 'Free, feature packed pokédex for iPhone' and is an app in the Education & Reference category. There are nine alternatives to Déxter for Online / Web-based, Android, iPhone, Android Tablet and iPad. The best alternative is dataDex, which is free. Other great apps like Déxter are Pokédex (Free), Goldex Pokedex (Freemium), PokeInfo (Free) and Pokedex.org (Free, Open Source).
dataDex is an unofficial, beautifully designed Pokédex app for everyone to use. It contains detailed data on every single Pokémon, for every main series game ever released, including Sun & Moon! Includes full entries, types, abilities, moves and so much more!
Dex for Pokedex gives you easy access to the info of Pokémons, like its type, height, weight, and evolutions, and go from there to explore a rich trove of Pokémon details. You can find your Pokémon's stats, its moves.
Bulbapedia is the community driven Pokémon encyclopedia. The app has everything from our wiki. Access guides, articles, Pokémon facts and more with easy navigation online and on mobile. FEATURES - Complete Pokedex : All Pokemon Generations I-VII Always Up to Date!