What Find options do I have? The NeoFinder Users Guide has more about this: 12.2 The Find Editor
How many catalogs can NeoFinder iOS handle? That depends on the memory your iPhone has, and how large your catalogs are. As the catalogs are installed on the iPhone, they may use a lot of space there. We are interested to learn how many catalogs in which sizes you actually use with NeoFinder iOS, please let us know!