Notes and a password vault for Windows and Android
Your sticky notes, safe from prying eyes.
Matemasie replaces Sticky Notes. You keep the little colored notes on your desktop: the grocery list, the plumber’s number. The difference is that everything is encrypted on your device, and the notes that are nobody else’s business lock themselves.
Windows 10 and 11, Android 8 and later. iPhone and iPad coming.
Notes
Right where they were, on your desktop.
One note per window, wherever you put it, still there after a restart. The Sticky Notes colors. Ctrl+Alt+N opens a new note even when Matemasie is in the background. Bold text, checkboxes, pasted images, and a search that goes through every note at once.
Your Sticky Notes come over to Matemasie in one go, colors included. Matemasie reads a copy, so the original stays untouched.
Deleted one too fast? It’s waiting in the trash. And every note keeps its earlier versions, just in case.
Sensitive notes
The gate code has no business being in plain sight.
Some notes shouldn’t be readable by whoever walks past your screen: the alarm code, the router password. Mark them as sensitive. They get a second layer of encryption and only open with Windows Hello, your fingerprint or your passphrase. In the list, all you see is a padlock.
Gate code
Building: 4719# Spare mailbox key is with the building manager.
- They lock again on their own after five minutes of inactivity, when the computer goes to sleep and when you lock your session.
- When they’re open on Windows, they don’t show up in screenshots.
- Anything you copy from a sensitive note is cleared from the clipboard after thirty seconds.
The vault
And a vault for everything else.
Passwords and card numbers sit next to your notes, in records designed for them. Copy any field in one click; the password stays hidden until you ask to see it.
- Logins
- Websites and apps, with several addresses and the recovery email.
- Wi-Fi
- Your home network, plus a QR code to show guests instead of spelling out the password.
- Cards and accounts
- Bank card, IBAN, and the number to call if it’s lost.
- Documents
- Passport, ID card, driver’s license, with their expiry dates.
- Licenses
- Software keys and the email of the account that bought them.
- Generator
- Passwords and easy-to-remember passphrases, tuned the way you like.
- Vault health
- Weak or reused passwords get flagged.
- Bitwarden import
- Bring your records over from a Bitwarden export, encrypted or not.
- For IT people
- SSH and API keys, remote desktop and SSH connections, Royal TS import.
Sync
From one device to another, without going through us.
Matemasie has no server. To get your notes on your phone, you pick storage you already own: Google Drive, OneDrive, a WebDAV server, a shared folder, or just your home Wi-Fi. Each note is encrypted before it leaves the device. Google or Microsoft see files, their size and their date, never what’s inside.
- Your PC
- Your Drive
- Your phone
A new device only gets in with the approval of one you already use: the same code appears on both screens, and you confirm they match.
Security
What protects your notes, in plain words.
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Everything is encrypted on the device.
The notes database is encrypted on disk. Sensitive notes, the vault and sync get a second layer, with AES-256-GCM. These are public methods that have been studied for years.
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A passphrase we never know.
One passphrase opens your sensitive notes, the vault and sync. It never leaves your devices. We can’t read it, and we can’t reset it.
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A recovery key, to keep on paper.
It’s shown once, when you set things up. If you forget your passphrase, this is what gets you back in. Without one or the other, nobody can open your notes, us included. Keep it with your important papers.
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A lost phone can be removed from the vault.
You remove it from another device: the vault keys change right away, and if the phone reconnects, it wipes its data. If it stays offline, it still asks for your passphrase, the fingerprint stops being enough after fourteen days, and its data is erased after ten failed attempts.
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What Matemasie can’t prevent.
Malware running under your account while your notes are open sees what you see. No notes app can get around that. Keep your system up to date and only install software you trust.
Matemasie asks for no account, shows no ads, doesn’t track how you use it and sends nothing when it crashes. This site doesn’t set cookies either.
Free and Plus
The essentials are free, for good.
Encryption, sensitive notes, the vault and imports will never cost a thing. Plus is for people with lots of devices, or who like to tinker.
Free
- Notes, sensitive notes and vault records, as many as you want
- Sticky Notes and Bitwarden import
- Local backups and export
- Sync between two devices
- Thirty days of note history
- Attachments up to 10 MB per note
Plus
- As many devices as you like
- One-time codes (TOTP) in the vault
- Attachments up to 50 MB per note
- A year of note history
- Automatic backup to your cloud storage
- Remote desktop and SSH connections
- Password checks against known data breaches
Monthly or yearly subscription, or a lifetime license. Prices announced at launch.
Stopping Plus? Nothing gets deleted. Your attachments and history stay put; only what you add next follows the limits of the free plan.
Why Matemasie
I kept secrets on sticky notes.
I’ve used Sticky Notes every day for years. My screen is covered in them. One day I realized that some of those notes should never have been there, readable by the first person to walk behind me.
Then I nearly lost the settings for all my connections.
I wanted something simple: my notes, just like before, but kept safe. Encrypted on my own machine, copied wherever I decide, without handing anything to someone else’s server. That’s where Matemasie came from.
Mate Masie is an Adinkra symbol of the Akan peoples of Ghana and Côte d’Ivoire. It means “what I hear, I keep.” That’s what I expect from a notes app.
Rachidi SOULE, founder of MOSOBI
On Windows and Android.
- Windows
- Windows 10 (version 1809) and 11, from the Microsoft Store.
- Android
- Android 8 and later, on Google Play.
- iPhone and iPad
- Coming.
