Cloud & Local Storage

Store your passwords on iCloud, Dropbox, OneDrive, Google Drive. Self hosting Options include WebDAV & SFTP. Other providers (e.g. Box, Nextcloud) can be used via the built-in iOS Files app. Allowing easy access from all your devices. Alternatively keep them entirely isolated locally on your device

Open Source & Secure

Strongbox uses military grade cryptography, including algorithms like AES256, TwoFish, Argon2D, ChaCha20, Salsa20 all in CBC mode where appropriate. For integrity SHA256 digests and RFC2104 HMACs. For entropy a CSPRNG is always used. Source Code is available for independent audit at any time on GitHub. Available for Licence under AGPL or alternatives (contact support for options)


Supports both Password Safe (version 3, psafe3, dat) and KeePass (versions 1 or 2, KDB and KDBX) formats. Strongbox is compatible with other Password Safe or KeePass clients. Multiple Import & Export options

Simple Clean Interface

A minimal but intuitive user interface makes Strongbox a pleasure to use. Auto Fill Credential Extension on iOS surfaces Strongbox at just the right time, in Safari and other apps

Pricing (Free & Pro)

Strongbox uses the Freemium model. You will always be able to open, edit & sync your databases where ever they are with the Free version.

The Pro features are convenience items like Face or Touch ID Unlock and PIN Codes. You can try all the Pro features out for three months too, before deciding if you'd like to upgrade. Further details are available in App or on the Compare Versions page.

The upgrade is always Optional and the Free version is extensive and suits a lot of people.

The price varies based on your App Store but is around $35 one-off lifetime purchase or there are various subscription options if that works better for you.

Mostly the upgrade is about helping to support an independent developer who loves to work on this App! ✊

Other Features

Easy to use and powerful Deep Search. Find any entry across your entire database in milliseconds, across all fields.
Store Custom Fields or File Attachments all securely encrypted and protected, Auto Clear Clipboard, Two Factor (TOTP) code generation including RFC 6238 and Steam tokens, Edit History, customizable KeePass Icons (with FavIcon downloading on iOS)

About Strongbox

Strongbox began as a simple side project because there were no password managers on iOS that supported the famous Password Safe file format. This was something I personally used in my work day to day and regularly for my own personal passwords. Back in those days Password Safe was one of the leading password managers for Windows and was initially created and supported by world famous cryptographer Bruce Schneier.

As the world became more mobile and as desktop Windows lost its dominance the need for an Open Source password manager only grew and this is when my own need for a Password Safe client for other platforms grew. Strongbox emerged from this need and has grown and developed into what you see today. Originally built as a home project just for my own use, many others found it on the App Store have found it useful which has both really surprised me and brings me great joy.

Support for KeePass was added in late 2018 due to many requests and its popularity has increased with this extra functionality. The KeePass format adds many nice features such as custom fields, attachments and icons as well as strong cross platform support and a larger community than the original Password Safe format.

Strongbox is nearly five years old now and has many more users than I could have ever imagined. Strongbox is a work in progress as is all software but if you like it, or have any questions or comments, feel free to get in touch (support@strongboxsafe.com) . I’d love to hear about how you or your company are using Strongbox.

-Mark McGuill
Strongbox Founder

Strongbox in the Press

A selection of reviews from the App Store
Apan R

Apan R

Clean. Simple. Very nice.

"This app stores your passwords and does it in a clean and simple way. The developer answers any questions fast and very helpful way."



Strongbox: Best password safe EVER!!

"Strongbox has a good clean interface and is super easy to use! It also has a MacOS version which coupled with iCloud makes managing passwords seamless across devices. I love this app!!"



Works as expected!

"I use it to open a Password Safe that I sync with my Windows machine. I sync the files between phone, MacBook and desktop using the integrated Dropbox support."



Prima Tool

"Funktioniert wunderbar mit bekanntem pwsafe vom Desktop und sync mit Dropbox und iCloud"



Great cross platform password manager

"Uses the password safe format which means your password file can be used on every operating system with free tools. Also allows for easy syncing of the passwords across devices via DropBox. Fast and easy to use. Great Touch ID support. Everything I want and need in an iPhone password management app."



Excellent password manager

"I have used Password Safe on my Windows computers for years and Stongbox is just what I was looking for to manage these passwords on my iPad. Compatibility with Password Safe databases is perfect. It is well-designed, simple to use, and does exactly what I need. I recommend it without reservations."

Get in Touch

If you have any questions, need help or just want a new feature!