A Pokédex contains all detailed information about a Pokémon. You can come here to know about a specific Pokémon. All Pokemon from Pokémon Vortex are listed in this Pokédex. You can know each and every detail of a Pokémon based on it's appearance or disappearance in Pokémon Vortex.
The Pokédex in Pokémon Vortex is similar to that of the regular games in which you have a main screen that will display whether you have each Pokémon that is obtainable within the game and upon clicking a specific Pokémon, it will open up and show you more detail about the Pokémon. Details include its other variants, Pokédex number, how many have been obtained in Pokémon Vortex, base attacks, evolutions and more.
The global stats for how many of each Pokémon have been obtained are tracked globally through the game for every registered user. Each time, they catch a Pokémon, the counter will increase and likewise with releasing a Pokémon, it will decrease.
Looking through your personal Pokédex, it will display whether you have each variant of a Pokémon by showing a Obtained or a Not Obtained if you have not yet caught/obtained the Pokémon.
One of the huge differences with Pokémon Vortex's Pokédex is that it will not remember that you once had a Pokémon, but only what you currently have. So, if you trade a Pokémon or release one then it will be removed from your Pokédex obtained list. Another big difference is the amount of Pokémon there are to obtain. As of version 3, there are over 5,200 Pokémon to collect for your personal collection. While there are no limitations to how many Pokémon your account can hold, this makes it easy to stockpile duplicate Pokémon for later trades when you come to only need a few Pokémon for completion of the Pokédex.
Pokédex Achievements
There are various achievements that are obtained from reaching certain milestones of Pokédex completion which are awarded in increments of 1,000 unique Pokémon up to 5,000 and then one achievement for completing the entire Pokédex (Which is currently impossible).