Master Password is now moving to Spectre!
Check out our Spectre app in the store for new and improved password capabilities.

TL;DR – Master Password is not another password manager. This app will replace all your passwords with new strong passwords generated from your new master password; passwords are stored nowhere and need no sync, cloud or backups.

This app will securely generate strong and unique passwords for any purpose, in a way that nobody can log or trace.

Better yet, even if you somehow lose everything, you can effortlessly recreate all your passwords.


Master Password is unique in the way it solves the password problem.
The algorithm it uses was specifically designed to combat the drawbacks other password managers suffer from:

• Vault apps (eg. 1Password): You need to sync and make backups to avoid losing everything. Without access to the vault, no passwords.
• Cloud apps (eg. LastPass): You need to trust they haven't and won't get gagged and compelled to spy on you. No Internet, no passwords.

By using a unique cryptographic algorithm, Master Password generates the password for your site ON-DEMAND, completely OFF-LINE and using nothing but your name and master password.

That means your passwords are not stored on your phone, there's nothing to keep in sync, no reliance on a third party, no need for syncing, copying or backing up. If your phone gets stolen or confiscated, there are no passwords in the app.

Master Password can also:
• Generate a user name for your sites, so you can't forget it or to provide additional anonymity.
• Generate answers to security questions, so you don't need to share your private life experiences under the false veil of "security".


• Re-using a memorable password is like giving everyone your car keys.
• Inventing many good passwords is difficult; remembering them, almost impossible.
• "Clever" encoding schemes such as Tr0ub4dor&3 don’t work either: criminals know we do this and brute-force it with ease.


There is a lot more to safety than using "military grade encryption".

• Strong passwords: They are too expensive for hackers to reverse.
• Not saved: Thieves or officials confiscating your hardware will find no secrets on it.
• Ubiquitous: You can use ANY device to instantly calculate your site passwords.

• Save custom passwords: They are AES-encrypted and saved.
• Strong protections: Salting and key derivation keep your master password safe.
• Free Software: Source available and evaluated by independent experts. There is no fairy dust, only mathematical precision.


Master Password is based on a cryptographic algorithm hardened against all forms of attacks, including brute-force, rainbow tables, length extension, cypher weaknesses, expensive computing power, etc.

In its essence, Master Password is based on:
ENCODE( HMAC-SHA256( SCRYPT( masterPassword, userName ), siteName | siteCounter ), siteTemplate )

This is a simplified representation. See for more information.


‣ Don't reuse an old password as your new master password.
‣ Check out the App Store on your Mac or the homepage for the desktop version.
‣ A short sentence is a great master password! Quick to type and easily recalled, eg. banana colored duckling

Learn more:

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What’s New

Version 2.9.11

Master Password is now becoming Spectre!
A fully redesigned app with a modern new customizable UI, improved privacy, security and reliability as well as new features and systems integrations.

Migration is very easy: just tap the pop-up message in Master Password to copy your user over to Spectre.
You can keep using Master Password for as long as you like, but development and maintenance efforts will now be shifting over to Spectre and Master Password is no longer actively maintained.

Join us!

Ratings and Reviews

4.8 out of 5
104 Ratings

104 Ratings

Brysonsd88 ,

So simple, so easy, no integration

I love this password manager. It’s so simple to use and it doesn’t store things in some cloud so I know what I’m getting. I think the only things that would make it better would be if it could integrate with a browser or other applications and if there was a better desktop app for Linux rather than the Java implementation which still has some bugs. Overall wonderful tho! I do get confused sometimes when I have to remake passwords and I have to increment the algorithm for the next password. Then I can’t remember which one I used! Thankfully that’s only happened once.

73728263 ,

Great P-Word manager

Secure, simple and hassle free. I love that this unique password manager doesn’t have to be synced with a centralized server. All passwords are generated using the unique generation algorithm. Meaning you don’t have to rely on the internet and some centralized server somewhere to sync passwords. I could go on and on about this unique and user simplistic experience app but just give it a try you won’t regret it!

daveten ,

Simple but Not Easy

While it’s a snap to use, Master Password is a sophisticated password generator that somehow combines your name, and salts them to concoct a targeted password for each site, app, note, etc. Its worlds more complicated, and yet I’m not really interested in how it works it’s magic. I’m just glad it does, without me having to hunt for independent scraps of data like so many of the othe password keepers.

App Privacy

The developer, Maarten Billemont, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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