Best Encrypted Notes Apps for Android in 2026

Your notes hold passwords, medical details, journal entries, and private thoughts — and most default apps store them readable on company servers, where a breach, a subpoena, or a curious employee can expose them. These encrypted notes apps encrypt on your device before syncing, so even the company cannot read them. Here are the best ones for Android.

Quick Comparison

1. Notesnook — Best Overall

The best starting point in 2026: 4.63 rating with 7,151 reviews. Encryption is on by default with a zero-knowledge design — the server only ever sees ciphertext. The standout is the free tier: all editors included (rich text, Markdown, tables, checklists, code blocks), 5GB storage, 30-day history. Modern Material Design 3 Android app with biometric lock and quick notes from the notification tray. Pro (~$4.49/month) adds 15GB, unlimited devices, and notebook sharing. Self-hosting available since v3.

Get Notesnook on Google Play

2. Standard Notes — Best for Maximum Trust

The pioneer: 4.59 with 8,490 reviews, encrypting by default since 2017 — the longest zero-knowledge track record in the business, with formal third-party audits. Important correction to outdated articles: Standard Notes joined Proton in 2024 (not Automattic) and remains a separate product. The architecture means even Proton cannot read your notes. The trade: the free tier is basic — advanced editors need a paid plan (~$90/year). Choose it when proven security matters more than a polished free tier.

Get Standard Notes on Google Play

3. Joplin — Best for Self-Hosters and Power Users

3.99 with 7,171 reviews. The most flexible: sync via Nextcloud, WebDAV, Dropbox, OneDrive, S3, or Joplin Cloud — or run your own Joplin Server in Docker and pay nothing. 200+ community plugins (Kanban, wiki-links, backups). Markdown-native. The critical warning: E2EE is opt-in, not default — you must enable it in settings on every device, or your notes sync readable to your storage. Mobile UI is functional but dated.

Get Joplin on Google Play

4. Obsidian — Best Local-First Option

Obsidian stores notes as plain files in a vault on your device — no account needed, no telemetry. The optional Sync service is end-to-end encrypted. Best for researchers who link notes together. Caveat: the core app is proprietary (only the ecosystem is open), and third-party sync methods need separate security assessment. Keep independent backups — local files die with a lost phone.

What "Encrypted" Actually Means

• End-to-end encryption (E2EE): notes are encrypted on your device before reaching any server. The provider cannot read them. All three top picks do this (Joplin only when you enable it).
• Zero-knowledge: the company has no access to your keys and cannot reset your password to peek inside.
• Open source: the code can be audited. All three top picks are fully open source.
• Not E2EE: Google Keep, Evernote free, OneNote — the company holds the keys and can read your notes. Samsung/Apple Notes lock individual notes but are not zero-knowledge services.

The Password Warning (Read This)

Zero-knowledge encryption has one brutal trade-off: if you forget your password, your notes are gone forever. Nobody can reset it — not support, not the CEO, not Proton. Before you migrate your life into an encrypted notes app:

1. Save your recovery key/materials in a second safe place (password manager, printed copy).
2. Test recovery on a second device before deleting your old notes.
3. Keep an encrypted export backup somewhere you control.

Which App for Whom

• New to private notes: Notesnook — best free tier, best mobile app, zero setup.
• Journalist / lawyer / therapist: Standard Notes — audited, longest track record, Proton-backed.
• Self-hoster / tinkerer: Joplin — your server, your rules, 200+ plugins.
• Researcher with linked notes: Obsidian — local files, graph view, E2EE sync optional.
• Just quick locked notes: Samsung Notes / Apple Notes per-note lock is fine — but know its limits.

Migrating from Evernote or Notion

• All three import Evernote's ENEX format; Joplin's importer is the most mature.
• Notion imports are partial everywhere — databases do not transfer cleanly.
• Start with one notebook, verify sync and encryption on all devices, then migrate the rest.
• Keep your old app until the new setup has run flawlessly for two weeks.

Honest Downsides Nobody Mentions

• Encrypted search is weaker. Because the server cannot read your notes, server-side full-text search is limited or absent. All three apps search locally on your device — fine on a phone, slower across a huge archive.
• Collaboration is limited. Real-time co-editing like Google Docs does not exist in zero-knowledge apps — the server cannot merge what it cannot read. Notesnook's Monograph (publish as a web page) and Joplin Cloud sharing are the workarounds.
• Web clipper quality varies. Evernote refugees miss the clipper most. Joplin's is the best of the three; the others are serviceable.
• AI features are absent. Mainstream apps now summarize and organize with AI — encrypted apps cannot send your notes to an AI server without breaking their promise. If you want AI summaries, you must export notes manually.
• Account recovery is on you. Already covered above, but it bears repeating: there is no "forgot password" email that works.

Setting Up Encryption Correctly (Joplin Checklist)

Joplin's opt-in encryption is the #1 trap. Do this on day one:

1. Open Joplin → Settings → Encryption → Enable encryption.
2. Set a strong master password (unique, not reused).
3. Repeat on every device — desktop, phone, tablet. Each must confirm the same master key.
4. Create a test note, sync, and verify it opens decrypted on all devices.
5. Only then migrate your real notes.
6. Save the master password in a password manager immediately.

For Notesnook and Standard Notes, encryption is already on — your only job is step 6 with your account password and recovery materials. Write them down today, not "later" — later is when the phone is already lost, and by then no support team on earth can help you.

Backups: Encryption Is Not a Backup

E2EE protects notes from snoops, not from loss. A phone dropped in a river takes local-only notes with it, and sync services can have outages too. The backup plan:

• Joplin: Simple Backup plugin → automatic encrypted exports to a folder you control.
• Notesnook: periodic manual exports (Settings → Backup) stored off-device.
• Standard Notes: encrypted backups included; download them regularly.
• Keep one backup outside the sync service — a USB drive or a second cloud account, updated monthly.
• Test restoring once. An untested backup is a hope, not a backup — and hope is not a strategy.

Threat Model: How Paranoid Should You Be?

• Advertisers and data brokers: any of the three wins. Even Google Keep is "fine" here — the risk is profiling, not exposure.
• Cloud breach / rogue employee: E2EE apps win decisively. This is the core case.
• Government subpoena: zero-knowledge means there is nothing to hand over. Standard Notes' audited history is the strongest story here.
• Phone seized while open: no notes app saves you — enable biometric/app lock and a short auto-lock timeout.
• Forgot password: the one threat E2EE cannot protect against is you. Plan for it.

One More Thing: Notes Are Not Passwords

A common misuse: storing passwords in encrypted notes instead of a password manager. Do not. Password managers add breach monitoring, phishing protection, and autofill that notes apps lack. They are also built so that a single compromised note does not expose your entire digital life the way a notes file full of credentials would. Keep passwords in a proper manager (Bitwarden, KeePass) and use your encrypted notes for everything else — journals, medical records, private plans, creative work. Each tool for its job.

FAQs

Which is the best encrypted notes app for Android?

Notesnook (4.63 rating) is the best starting point: encryption on by default, generous free tier with all editors. Standard Notes (4.59) has the longest audited track record. Joplin (3.99) is best for self-hosters and power users.

Is Standard Notes still private after joining Proton?

Yes. Standard Notes joined Proton in 2024 but remains a separate product. Its zero-knowledge design means even Proton cannot read your notes — encryption happens on your device before sync.

What happens if I forget my encrypted notes password?

You lose your notes — permanently. Zero-knowledge encryption means nobody, not even the company, can reset your password. Save your recovery materials somewhere safe from day one.

Does Joplin encrypt notes by default?

No — Joplin's end-to-end encryption is opt-in. You must enable it in settings on every device. Notes synced without E2EE enabled are stored readable on your sync target.

Are Google Keep and Samsung Notes encrypted?

Not end-to-end. Google and Samsung hold the keys and can read your notes. Samsung Notes offers per-note locks, but the service is not zero-knowledge. For real privacy, use Notesnook, Standard Notes, or Joplin.