# Sentinel Chat Channels vs CDA Secure Comms

The clearest difference is update cadence: Sentinel Chat Channels at every 3 months against CDA Secure Comms's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Sentinel Chat Channels ships an update every 3 months, CDA Secure Comms every 9 months. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Sentinel Chat Channels | CDA Secure Comms |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | Free | — |
| Size | 35 MB | 34 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YUDU Ltd](https://appshunter.io/developer/363773495) | [Central District Alliance Ltd](https://appshunter.io/developer/1599487736) |

## What reviewers say

### Sentinel Chat Channels

[App page](https://appshunter.io/ios/app/sentinel-chat-channels/id1481819694)

Facilitates secure team communication with instant messaging, file sharing, and group management. It offers a GDPR-compliant, professional environment with an audit trail and a protected contacts directory for immediate staff calls.

**Highlights:** Instant messaging, File sharing, Push notifications, Group management, Tamper-proof audit trail, Protected contacts directory

**In-app purchases:** none


### CDA Secure Comms

[App page](https://appshunter.io/ios/app/cda-secure-comms/id6479410872)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sentinel Chat Channels free?

Sentinel Chat Channels is free to download, with no in-app purchases.

### Is CDA Secure Comms free?

CDA Secure Comms is free to download, with no in-app purchases.

### Do Sentinel Chat Channels or CDA Secure Comms have ads?

Neither Sentinel Chat Channels nor CDA Secure Comms shows ads.

### Which is updated more often, Sentinel Chat Channels or CDA Secure Comms?

Sentinel Chat Channels ships an update every 3 months, and CDA Secure Comms every 9 months. Most recently, Sentinel Chat Channels was updated on October 12, 2026 and CDA Secure Comms on October 14, 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.*