#1 
Encrypted notes, tasks, calendar, files, passwords and a journal with mood and medication tracking, all unlocked by one 12-word recovery phrase. Sign up with no email and no password. Open source.
iOS File Encryption
The File Encryption we recommend, filtered to iOS. See all File Encryption →
#2 
Cryptomator encrypts your data quickly and easily. Afterwards you upload them protected to a cloud service.