Specific issues
1) Some known locations found searching the "full site" are not found in the app. I did not find any listings in that app for locations that dont exist but apparently several reviewers have experienced it. That could present a significant problem when traveling especially in unfamiliar places.
2) Using the GPS locator requires the app be able to use the devices GPS "even when youre not using the app" which uses a lot of battery needlessly. (since iOS 8 apps can use GPS all the time or just when using the app)
3) Panning and zooming in the map function of the app are very tedious to the point of being nearly impossible.
I think #2 should be pretty easy for the software developers to fix. For #1, I think it would be possible to link the app to the online database that apparently is more up to date than that currently available to the app. Fixing #3 clearly would be more complicated but I am confident that it would be possible.
Biophile about
ATM Locator