Comparison with similar programs

There are several versions of programs compatible Keepass for iPhone and you do not know which one to use?
Here is a list that will help you:

Kypass 1.2 iKeepass 2.1 MyKeepass 1.12 PassDrop 1.0.1
Dropbox Yes No No Yes
Search functionality Yes Yes Yes Yes
Universal (iPad/iPhone) Yes Yes No No
Read KDB v1.x Yes Yes Yes Yes
Write KDB v1.x Yes No Yes Yes
Read KDBx v2.x Yes No Yes<=2.14 No
Write KDBx v2.x No No No No
Min version of IOS 3.1.3 4.0 3.1.3 4.2