Unless you have the newest iPad, this app won't work. – Pokémon TCG Online Review

This could be a decent app, but it's so animation heavy and laggy, that it's virtually unplayable. There should be an option to disable animations for people with older devices. I don't know how such a simple app can be so laggy, glitchy, and crash constantly.
Review by JennnnCB on Pokémon TCG Online.