# CSI Secure Connect vs Diligent Messenger

The clearest difference is rating: Diligent Messenger at 4.7 against CSI Secure Connect's 2.9. Diligent Messenger also leads on iOS requirement (14.1 vs 17.2). CSI Secure Connect's advantage is update cadence (every 3 weeks vs every 6 weeks). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Diligent Messenger holds the better App Store score, 4.7 against 2.9. Both are backed by a comparable volume of ratings — 10 and 19 respectively.

CSI Secure Connect ships an update every 3 weeks, Diligent Messenger every 6 weeks. The most recent releases landed on October 8, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | CSI Secure Connect | Diligent Messenger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (10 ratings)](https://appshunter.io/ios/app/csi-secure-connect/id651639917/reviews) | **[4.7 (19 ratings)](https://appshunter.io/ios/app/diligent-messenger/id1104378811/reviews)** |
| Number of ratings | 10 | **19** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 77 MB | 111 MB |
| Requires iOS | 17.2 | **14.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Computer Services, Inc.](https://appshunter.io/developer/448800531) | [Diligent Corporation](https://appshunter.io/developer/412771398) |

## What reviewers say

### CSI Secure Connect

[App page](https://appshunter.io/ios/app/csi-secure-connect/id651639917)

Facilitates secure and efficient communication for board members, providing easy access to confidential documents and tools for online votes and discussions. It simplifies data sharing to enhance corporate communication and productivity.

**Highlights:** Secure access to board materials, Online votes and discussion threads, Shared calendar for meeting scheduling, Storage for current and archived documents, No additional hardware or software required

**Features:** macOS Compatibility

**In-app purchases:** none


### Diligent Messenger

[App page](https://appshunter.io/ios/app/diligent-messenger/id1104378811)

A secure messaging application designed for executives and board members to communicate confidentially. It integrates with a board management platform, ensuring conversations are protected by encryption and access controls within a trusted governance framework.

**Highlights:** Secure messaging for executives, Integrated with Diligent Boards platform, End-to-end message encryption, Strict access controls, Admin and Board Member user roles, Centralized group and permission management

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CSI Secure Connect free?

CSI Secure Connect is free to download, with no in-app purchases.

### Is Diligent Messenger free?

Diligent Messenger is free to download, with no in-app purchases.

### Which has better reviews, CSI Secure Connect or Diligent Messenger?

Diligent Messenger is rated higher. CSI Secure Connect averages 2.9 out of 5 from 10 ratings, while Diligent Messenger averages 4.7 from 19 ratings.

### Do CSI Secure Connect or Diligent Messenger have ads?

Neither CSI Secure Connect nor Diligent Messenger shows ads.

### Which is updated more often, CSI Secure Connect or Diligent Messenger?

CSI Secure Connect ships an update every 3 weeks, and Diligent Messenger every 6 weeks. Most recently, CSI Secure Connect was updated on October 8, 2026 and Diligent Messenger on September 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*