Promising ...
Version 4.0.3. I first used handbase on my palm tx, then on windows mobile. I ended up switching to SprintDB though for windows mobile. This version is as mentioned in other reviews - a bit buggy but promising. For the price, by far the best db app for the iPhone though. These developers are not amateurs - I am confident that the bugs will get ironed out.
My main issue is the same as it was on the other platforms - no support for proper SQL.
malone46844 about
HanDBase Database Manager