I am flying in Europe. I normally use PocketFMS data on my HDX. Recently I came about Airmate as a supplier and tried it out. So far I am not convinced to change from PocketFMS to Airmate. Is somebody else trying out Airmate?
AFAIK Airmate provides geo referenced VFR and IFR plates while pocketfms VFR only. Might or might not be relevant for you. I'm happy that we have the choice.
In any case, both providers grab taxpayers founded data from AIP and sell it to us as a database.