Compass View... when viewing the map select a cache and then press the compass button on the right side (see screenshot).
Dropbox Support... Geooh uses Google's Storage Access Framework that all apps will be required to follow in the future (for security reasons). Unfortunately, Dropbox has yet to support SAF. Until then you can use Google Drive as your cloud drive for Geooh... which will let your treat Drive as another accessible local directory.
Offline Mapping... the enhance subscription version of Geooh has Alternative Maps support so that you can use any tile server or Mapsforge offline map (and there are topo and shading ones available). The advantage Geooh has over the Cachly or Locus is that YOU can choose whatever maps you want instead of having predefined ones statically setup within the app. I've attached a screenshot using the opentopmap tile server to show an example on Geooh.
Compass Size... Geooh is the only app that will overlay the compass on the map and fade in/out as you rotate the phone horizontal/vertical. The advantage is you can easily view the map whenever you want by hiding the compass as the phone turns vertical and then horizontal (like a real compass) it shows a full-size compass view. An additional feature only found on Geooh is the ability to shrink the map/compass view into a floating window when you open another app... like Google's navigation app does.
PQ Downloads... Pocket query downloads are super fast. If you have turned on Download Images in settings that would delay the process considerably when going to websites to get images. Be sure you are not comparing apples to oranges with Cachly/Locus if the download characteristics are not the same. Also, you don't even need to create a PQ if that comes from a bookmark list... just download the online list and specify Lite download to show how quickly it can go. You could download all images (in logs) for an offline list, but the PQ/GPX download images is only for descriptions.
HTML Source... No, there isn't a switch to see the HTML for geocache descriptions
Let me know of any other questions or issues!