Guide
Secure Notes App for iPhone — Locked, Encrypted, Private
A privacy-first notes app for iPhone with AES-256 encryption, Face ID lock, per-folder passwords, and encrypted iCloud sync across iPhone and iPad.
Quick answer: Secure Notes is a dedicated iPhone note-taking app that encrypts every note with AES-256, unlocks with Face ID or Touch ID, and syncs encrypted through iCloud. It ships on iOS 16 and later with a free tier and an optional PRO upgrade.
What makes Secure Notes different from Apple Notes?
Apple Notes locks individual notes with a single device-level password. Secure Notes adds real encryption on top: per-note passwords, per-folder passwords, zero-knowledge architecture (the publisher cannot read your content), and a 12-word recovery seed so you cannot be locked out permanently.
What features ship in the app?
- AES-256 end-to-end encryption on every note and attachment.
- Face ID & Touch ID for instant unlock without retyping passwords.
- Password-protected folders to group sensitive content.
- Encrypted iCloud sync across iPhone and iPad.
- Markdown for checklists, headings, and code blocks.
- 12-seed recovery that survives forgotten passwords.
Who is Secure Notes for?
People storing content whose loss or leak would actually hurt: passwords, recovery codes, medical notes, journal entries, business plans, legal drafts. If you are comparing options, read our encrypted note apps comparison or start with the step-by-step lock guide.
Keep reading
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Best encrypted note apps for iPhone
See how Secure Notes compares to Standard Notes and others.
Comparison
Secure Notes vs Apple Notes
Head-to-head on encryption, key custody, and per-folder locking.
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What AES-256 actually protects
A plain-English guide to end-to-end encryption.