Open source
Folio is a diary you’re asked to trust, so all of its code is public.
The code
The iPhone app, the server and this website live in one repository: github.com/Soul-Archive-Limited/folio, under the Apache License 2.0. The encryption code and its shared test vectors are in ios/FolioCrypto and shared/.
The names Folio and Soul Archive and the app icon aren’t covered by the code licence (see NOTICE).
What Folio is built with
iPhone app
Only Apple’s frameworks — SwiftUI, SwiftData, CryptoKit, Speech, Foundation Models. No third-party code, SDKs, analytics or ads.
This website
- Astro (MIT)
- React (MIT)
- Motion (MIT)
- Instrument Serif by Rodrigo Fuenzalida and Jordan Egstad (SIL Open Font License 1.1), served from this site
Report a problem
Open an issue on GitHub. For anything security-related, email support@devilsense.com instead of opening a public issue.