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 2.5

We found and fixed some minor bugs that could potentially lead to app crashes fixes. We also added more crash logging code to improve our quality in the future.

Ratings and Reviews

5.0 out of 5
3 Ratings

3 Ratings

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
38.2 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
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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