Mental Note 3.9 fixes an important data integrity issue that appeared in rare circumstances. Please update to this version as soon as possible. This version also adds compatibility with iOS 10.
An additional feature that made it into this release is an improved interaction with address links. Try a long press on an address link that you’ve typed into one of your notes. An option will appear to open the link in Google Maps. If you have the Google Maps app installed it will open in that, if not, the web version of Google Maps will launch.
We are working on more features that we hope to have ready for release soon.