# SR2 Cypher — Encrypted Message Delivery

> Encrypted messaging and file sharing with military-grade security. (iPhone/iPad app by SR2 Solutions, LLC.)

- Source: https://appshunter.io/ios/app/sr2-cypher/id6661006814 (this page in markdown: same URL + `.md`)
- Developer: [SR2 Solutions, LLC](https://appshunter.io/developer/1389944387)
- Category: Productivity, Utilities
- Price: $5.99
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 14.7 · 19 MB
- Languages: English
- Released: 2024-08-26
- Data updated: 2026-06-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/sr2-cypher/id6661006814/reviews.md

## What is SR2 Cypher?

Protect your private communications with SR2 Cypher, the ultimate app for sending encrypted messages and large file attachments. Whether you’re a business professional handling sensitive data or someone who values privacy, SR2 Cypher has you covered.

Key Features:
- Military-Grade Encryption: All your messages and file attachments are encrypted using AES 256-bit encryption, the gold standard in security, ensuring your data remains confidential.
- Send Large Files: Share files up to 2GB with ease, knowing they’re protected by the most robust security protocols.
- No App? No Problem: Send secure messages to anyone, even if they don’t have SR2 Cypher installed. Each message is locked to the recipient's device, verified via a one-time passcode sent to their phone.
- Public Profile URL: Create a custom public profile URL where clients or colleagues can send you secure messages and large files. Ideal for professionals who regularly handle confidential information.
- Powered by AWS: SR2 Cypher utilizes Amazon Web Services' Key Management Service, ensuring that your encryption keys are managed securely.

Why Choose SR2 Cypher?

With SR2 Cypher, you can communicate with peace of mind, knowing your messages and files are safe from prying eyes. Whether you’re collaborating with a team or sharing sensitive information, SR2 Cypher is the secure solution you’ve been waiting for.

Download SR2 Cypher today and take control of your privacy.

## Key features

- Military-grade AES 256-bit encryption
- Send large files up to 2GB
- Secure messaging to non-users
- Public profile URL for secure incoming messages
- AWS Key Management Service integration


## Frequently asked questions about SR2 Cypher

### What is SR2 Cypher?

SR2 Cypher is a productivity app designed for sending encrypted messages and large file attachments. It utilizes military-grade encryption to ensure the confidentiality of your communications.

### How does SR2 Cypher protect my messages?

All messages and file attachments are encrypted using AES 256-bit encryption, which is considered the gold standard in security. This ensures your data remains confidential and protected from unauthorized access.

### Can I send secure messages to people who don't have SR2 Cypher?

Yes, SR2 Cypher allows you to send secure messages to anyone, even if they do not have the app installed. Each message is locked to the recipient's device and verified via a one-time passcode.

### What is the file size limit for attachments in SR2 Cypher?

You can share files up to 2GB in size with SR2 Cypher. These large files are protected by the app's robust security protocols.

### Does SR2 Cypher have ads?

No, SR2 Cypher does not contain advertisements. It is a paid application focused on providing a secure and uninterrupted user experience.

### What devices is SR2 Cypher available on?

SR2 Cypher is compatible with iPhone, iPad, and iPod devices. It is designed to offer secure communication across Apple's mobile ecosystem.

### How often is SR2 Cypher updated?

The latest version of SR2 Cypher is 2025.01.15, last updated on January 15, 2025. Updates ensure the app remains secure and functional.

### What is the price of SR2 Cypher?

SR2 Cypher is available for a one-time purchase of $5.99. This price provides full access to all its secure communication features.

## Version history (last 5 releases)

### 2025.01.15 — 2025-01-15

2025.01.15
- Added in app sound effects when new messages arrive.
- Added some security checks to maintain the privacy of your messages.
- You can now temporarily disable the privacy screen.
- Minor updates and improvements.

2025.01.03
- Minor updates.
- Fixed issue with permission requests for accessing contacts.

2024.09.26
- Fixed a problem with downloading some large files.
- Changed in app notifications of new messages to include some haptic feedback on supported devices.

2024.09.23
- (User Requested) Added a Dark Mode option under My Profile.
- New version scheme.

1.0.10
- Improved SMS and Email message composing.

1.0.9
- Added Support for Austria, Australia, Belgium, Bulgaria, Croatia, Cyprus, Czeck Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands New Zealand, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, and United Kingdom.
- More countries are coming.
- Added Privacy Policy language directly into the app.
- Fixed an issue with Push Notifications not going away.
- Improved User Interface for Contact Select.
- Fixed an issue that prevented Contacts from being accessed on some devices.
- Changed default message expiration timeframe from 2 days to 7 days.

1.0.8
- Improved international phone number input. Getting ready to add support for some European countries.

1.0.7
- Fixed menu button on About page

### 2025.01.03 — 2025-01-03

2025.01.03
- Minor updates.
- Fixed issue with permission requests for accessing contacts.

2024.09.26
- Fixed a problem with downloading some large files.
- Changed in app notifications of new messages to include some haptic feedback on supported devices.

2024.09.23
- (User Requested) Added a Dark Mode option under My Profile.
- New version scheme.

1.0.10
- Improved SMS and Email message composing.

1.0.9
- Added Support for Austria, Australia, Belgium, Bulgaria, Croatia, Cyprus, Czeck Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands New Zealand, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, and United Kingdom.
- More countries are coming.
- Added Privacy Policy language directly into the app.
- Fixed an issue with Push Notifications not going away.
- Improved User Interface for Contact Select.
- Fixed an issue that prevented Contacts from being accessed on some devices.
- Changed default message expiration timeframe from 2 days to 7 days.

1.0.8
- Improved international phone number input. Getting ready to add support for some European countries.

1.0.7
- Fixed menu button on About page

### 2024.09.26 — 2024-09-26

2024.09.26
- Fixed a problem with downloading some large files.
- Changed in app notifications of new messages to include some haptic feedback on supported devices.

2024.09.23
- (User Requested) Added a Dark Mode option under My Profile.
- New version scheme.

1.0.10
- Improved SMS and Email message composing.

1.0.9
- Added Support for Austria, Australia, Belgium, Bulgaria, Croatia, Cyprus, Czeck Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands New Zealand, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, and United Kingdom.
- More countries are coming.
- Added Privacy Policy language directly into the app.
- Fixed an issue with Push Notifications not going away.
- Improved User Interface for Contact Select.
- Fixed an issue that prevented Contacts from being accessed on some devices.
- Changed default message expiration timeframe from 2 days to 7 days.

1.0.8
- Improved international phone number input. Getting ready to add support for some European countries.

1.0.7
- Fixed menu button on About page

### 2024.09.23 — 2024-09-22

2024.09.23
- (User Requested) Added a Dark Mode option under My Profile.
- New version scheme.

1.0.10
- Improved SMS and Email message composing.

1.0.9
- Added Support for Austria, Australia, Belgium, Bulgaria, Croatia, Cyprus, Czeck Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands New Zealand, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, and United Kingdom.
- More countries are coming.
- Added Privacy Policy language directly into the app.
- Fixed an issue with Push Notifications not going away.
- Improved User Interface for Contact Select on iOS.
- Changed default message expiration timeframe from 2 days to 7 days.

1.0.8
- Improved international phone number input. Getting ready to add support for some European countries.

1.0.7
- Fixed menu button on About page

### 1.0.10 — 2024-09-20

1.0.10
- Improved SMS and Email message composing.

1.0.9
- Added Support for Austria, Australia, Belgium, Bulgaria, Croatia, Cyprus, Czeck Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands New Zealand, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, and United Kingdom.
- More countries are coming.
- Added Privacy Policy language directly into the app.
- Fixed an issue with Push Notifications not going away.
- Improved User Interface for Contact Select on iOS.
- Changed default message expiration timeframe from 2 days to 7 days.

1.0.8
- Improved international phone number input. Getting ready to add support for some European countries.

1.0.7
- Fixed menu button on About page

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## More apps by SR2 Solutions, LLC

- [ActivePrint Encryption](https://appshunter.io/ios/app/activeprint-encryption/id1390616325)
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- [SR2 - SOS](https://appshunter.io/ios/app/sr2-sos/id1584990406)
- [GulfSAR](https://appshunter.io/ios/app/gulfsar/id1631693023)
- [GulfSAR Team Members](https://appshunter.io/ios/app/gulfsar-team-members/id6503261309)

All apps by SR2 Solutions, LLC: https://appshunter.io/developer/1389944387

## Related topics

[sr2 cypher](https://appshunter.io/ios/topics/sr2-cypher)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-24.*