We currently support creating and restoring backups to/from Google Drive via the local backup settings: http://feedback.squidnotes.com/knowledgebase/articles/1185616
I understand that this does not meet everyone’s needs. Adding support for Google Drive to the automatic backup options is something we continue to investigate.
I recently wrote an open letter to Cloud Storage providers on this subject: https://medium.com/steadfast-innovation/open-letter-to-cloud-storage-apps-on-android-a2d0eb919fc4
Please encourage your favorite cloud storage provider (i.e. Google Drive) to fully support the Android Storage Access Framework (as stated in the above letter). This will not only help us to better support backup and restore to ANY cloud app, but will help the ecosystem as a whole.
This is something we’ve been investigating since the app’s inception and we continue to investigate constantly. Syncing is a very difficult problem to solve, especially in regards to handwritten notes which can be combined with images and text. I don’t have any kind of ETA for when syncing will be supported, but rest assured this is a high priority for us. We appreciate all your feedback on this idea.
For sync with google drive vote on this idea: http://feedback.squidnotes.com/forums/177239-general/suggestions/6379530-add-google-drive-as-a-cloud-option