That's great news that you found one.

I can't say I blame the developer. Any GPS application is only going to be as good as the data it gets.

I've tried any number of gps applications on the n810 and while they are accurate enough for driving down a road, it's just not accurate enough to locate an item 1x1 foot or smaller that is intentionally hidden.

I find GPXView to be indispensible to me as a geocacher. At a geocaching event I showed off my ridiculous n810 mount and GPXView and the consensus was that despite the lack of accuracy, the combination of features and the sheer number of geocaches that can be stored in the database, it's excellent.

May I suggest you check out the Geomate Jr? It's an $80 single-purpose device that has gotten excellent reviews.