It's been a long time coming. 5.3 has been uploaded to Google Play. You can get the apk from github:https://github.com/spacecowboy/NotePad/releases
I'm still not satisfied with Dropbox stability so that stays in the beta version for now.
# New features:
## Synchronize your notes to the SD-card
Saves your notes as text (.org) files. Combine with apps like OwnCloud or BitTorrentSync for an alternative to GTasks.
# Other changes:
* Date and Time selectors now use the new Google calendar style
* Fix a bug with scrolling in the preferences
* Many other tweaks and fixes.