Storm4 is the secure cloud storage service that stands out:

You only pay for what you use. We decided to say "no" to unfair tiered pricing systems.

• With us you get a utility-style pricing system, which means you only pay for what you use.
• Use as little or as much storage as you want.

The files you store in the cloud are encrypted using strong keys that only you know and control.​​

• This means nobody can read the content you put in the cloud, unless you explicitly share it with them.
• Not us. Not hackers. Not overreaching government agencies.
• So breathe a sigh of relief, and then take back your privacy.

Designed from the ground up with State-of-the-Art of Cryptography and Security Practices.

• We created Storm4 from the beginning with security and privacy in mind, not as an afterthought.
• No weak crypto, no back doors, no prying eyes.
• The files on your device are encrypted until you access them, even filenames - nothing is revealed.
• You can even add additional password protection for sensitive files.

Changes to your files sync across all your devices.

• Its easy to securely clone your account across multiple devices, including your macOS desktop and your changes automatically synchronize in the background.
• On iOS the full file is only downloaded when you ask for it.

What's New

Version 2.3

With a brand new uploading system, uploading multiple files is now dozens of times faster. The macOS version also comes with a brand new activity monitor, so you can see exactly what's being uploaded and downloaded from the cloud. In iOS we've added support for in-app purchase.

Ratings and Reviews

Jake1315436 ,

5 star

This is cool and works thanks !!!’n


Excited for this!!

4th A have hit upon a real need and I expect their execution to be as savvy as the idea itself. Great job!


4th A Technologies. LLC
45.9 MB
Requires iOS 9.1 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
Copyright © 2015 - 2018 4th-A Technologies, LLC. All rights reserved.
In-App Purchases
  1. Storage Credits $0.99 $0.99
  2. Storage Credits $9.99 $9.99
  3. Storage Credits $4.99 $4.99


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