Write your note. Leave Dualock keep it safe in the cloud.
We do not use password, because password is not safe enough and hard to remember.
Every note you saved here will be splited into two part.
Both the parts will encrypted separately and saved separately, using a pair of SNS account you specified.
To unlock your note, both accounts is needed.
Only you know the pair and the order of the pair.
It's safe. Even I don't know how to crack it.
Update for iOS 11.
Fix app crash of a very rare case.