I really enjoyed using the Pindigo app on my iPhone when it was able to sync with Pinside's score database. According to the Pindigo folks, reestablishing this feature would require Pinside to adopt OAUTH authentication, which Robin has said is on his to-do list:
It would be super-awesome if this change could be made to allow Pindigo to once again sync with Pinside scores! I for one would be much more likely to enter scores on Pinside if I can easily do so through an app like Pindigo rather than going through the web interface.
Thanks for your consideration.