Janus Notes

Stacks Image 9


This program is unsupported and it has been removed from the store. You're welcome to fork it from GitHub and continue developing it at your will.
This site is still here for historical reasons and until the domain name expires.


To start simply add a note and begin writing. Janus supports only plain text and markdown (with preview).
You can add attachments to the notes and they will live side by side with your notes.
On Macintosh just press '+' (or drag and drop a file) to attach it.
On iOS you can attach a picture (from the library or the camera), a link or take a voice note.
Tap the attachment to see it on iOS. Double click or right click the icon on Mac to open or edit it.

Notes Sharing

Janus Notes 2 will share automatically the notes among different Macs and to your iDevices using iCloud. If you don't use iCloud, the notes will remain on your device.


Your notes will be automatically encrypted on iCloud to avoid eavesdroppers.
The encryption password is available in clear in the software and can be freely changed. More: it should be changed as soon as possible. It is saved in the System Keychain and, therefore, it is sure when the device is locked (as it should always be when not in use). The cloud storage (the real target of encryption) is always encrypted without any copy of the password. We feel this is the right balance between usability and security.
Please note that attachments are not encrypted in any case.

Open Source

The program is open source (MIT licensed). You can check the code yourself for backdoors (or you can have it checked for you). Hint: there isn't any.
Forks and contributions are always welcome.


We understand that note-taking is a very personal thing and we tried very hard to keep your data as safe as possible.
We have *no* access to your cloud storage at all. Your data are safe.
The Macintosh version is fully sandboxed and we have no access to anything other than the attachments you added to the notes (a copy of them, stored with the notes).
If you're privacy-conscious you should lock your iPhone with a code (this will encrypt the notes' cache on your iPhone) and use FileVault on your Macintosh. Remember to lock your devices when you leave them.
Both the iOS and the Mac app do not "phone home" nor access anything else. There is no embedded analytics package for this reason. That means that we have no idea how you use the app and what is happening. Please send us your feedback and suggestions.