Absolutely #1 Database App.
I have been having fun using this app recently, if you have ever tried any other desktop database apps like MS-Access and now looking for a mobile database app, HanDBase is the one. If you really want to learn its features in details it will take you a couple of days, and it is worth it. You can check out its 80 page Users Guide on their website before buying it.
I have tested its filtering and sorting performance by a 10000 record database, it was impressive.
Here are a summary of its best advantages in my opinion:
1) Relational Database features (master/child data entry, lookup field from another DB)
2) Calculated fields and Reports - nice job
3) Multi-column list view
4) Flexible Security and Encryption options
5) Fast upload from desktop to device (10000 record CSV file in less than a minute)
6) Ability to email out the whole database or some records, also merge and synchronize changes from different copies of a database together using its wireless desktop connect.
7) Good looking and well designed user interface
I can not give it less than 5 stars!
iPodReader5 about
HanDBase Database Manager