Encrypted notes · Free
Notes that stay sealed.
Most photo vaults stop at pictures. In Sealby, notes are a core part of the vault: formatted text with bold, italics, strikethrough and headings, each encrypted with its own key and kept beside the files they belong to.
Free on every tier
What is the most private way to keep notes on iPhone?
Notes are stored as plain Markdown, so nothing is locked into a proprietary format, and sealed like every other item: AES-256-GCM with a key derived for that note alone. Search reads note text only after the vault is open, in memory, on your iPhone.
At a glance
- Bold, italics, strikethrough and headings
- Every note encrypted on the device with its own key
- Searchable inside the vault, including the note text
- Kept beside photos and files, in folders and with tags
Write privately in three taps.
- 1
Open a vault
Open a vault
- 2
Create a note
Write with a clean formatting set: bold, italics, strikethrough and headings. Pasted text is tidied to the same set.
- 3
Save
The note is encrypted the moment you save it. File it in a folder or tag it, like any other item.
What people keep in notes
Passwords and backup codes, a wallet inventory with directions to offline backups, door codes and addresses, medical details, a journal. Keep actual cryptocurrency recovery seeds offline, as our seed-phrase storage guide explains. Notes can hold the supporting information alongside the documents it refers to.
Stored as text, encrypted as a file
Notes are stored as plain Markdown, so nothing is locked into a proprietary format, and sealed like every other item: AES-256-GCM with a key derived for that note alone. Search reads note text only after the vault is open, in memory, on your iPhone.
Sealby notes versus locked notes in Apple Notes
Keep expectations right
Formatting is a deliberate subset, not a word processor: no tables, images inside notes or fonts. And notes, like everything in a vault, are only as safe as the secret and recovery phrase that protect them.
Common questions
Are notes free?
Yes. Notes are part of every vault on every tier.
Can I search inside my notes?
Yes. Search covers names and the decrypted note text, inside the open vault, on your device.
What happens to formatting when I paste?
Pasted text is tidied to the same clean set: bold, italics, strikethrough and headings. Anything else is dropped, so notes stay simple and portable.
Related: Folders, tags & search · vs locked notes apps · How hidden vaults work · All features
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iPhone & iPad · iOS 17+ · Free