# Trillian vs Dynamic Signal

The clearest difference is rating: Dynamic Signal at 4.8 against Trillian's 4.1. Dynamic Signal also leads on in-app purchases (none vs 4) and ratings volume (7K vs 574). Trillian's advantage is update cadence (weekly vs monthly) and review sentiment (57% vs 45%). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Trillian sells 4 in-app purchases, starting at $4.99 per month. Dynamic Signal asks for nothing beyond the download.

Dynamic Signal holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Dynamic Signal has 7K ratings behind it against 574, so its average is the more settled of the two. Written reviews complicate that: 57% of Trillian's written reviews are positive against 45% of Dynamic Signal's, so the app with the better star average is not the one people write more warmly about.

Trillian ships an update weekly, Dynamic Signal monthly. Both last shipped on September 25, 2026.

## The numbers

| Metric | Trillian | Dynamic Signal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (574 ratings)](https://appshunter.io/ios/app/trillian/id327603487/reviews) | **[4.8 (7K ratings)](https://appshunter.io/ios/app/dynamic-signal/id608659964/reviews)** |
| Number of ratings | 574 | **7K** |
| Positive reviews | **57.3% of reviews** | 45.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 41 MB | 76 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Cerulean Studios, LLC](https://appshunter.io/developer/327603490) | [Dynamic Signal, Inc.](https://appshunter.io/developer/553327430) |

## What reviewers say

### Trillian

[App page](https://appshunter.io/ios/app/trillian/id327603487)

This secure messaging platform offers instant communication for businesses, healthcare organizations, and individuals. It modernizes employee communication, provides HIPAA-compliant messaging for healthcare, and allows free, private communication for personal use.

**Highlights:** Secure business instant messaging, HIPAA-compliant healthcare communication, Free individual messaging, Modern employee communication, Privacy-focused personal chat

**Features:** Siri integration, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Trillian Pro - Monthly | $4.99 | per month |
| Trillian Pro - Yearly | $47.99 | per year |
| Trillian Pro - One Month | $4.99 | one-time |
| Trillian Pro - One Year | $47.90 | one-time |


### Dynamic Signal

[App page](https://appshunter.io/ios/app/dynamic-signal/id608659964)

This app connects organizations with their employees in real time. It delivers personalized and relevant content through alerts, push notifications, and various post formats. Companies use it to ensure every worker receives essential information.

**Highlights:** Real-time employee connection, Personalized content delivery, Alerts and push notifications, Broadcasts and posts, Native video support, Content sharing

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Convenient and informative
- 🚀 Efficient and amazing app
- 👍 Easy to use and download
- 👍 Keeps me connected with company
- 👍 Great communication tool

**What reviewers complain about**

- 🐛 Horrible app, forces constant login and password reset
- 🐛 Post is disabled, can't use the app
- 🔋 Uses too much data
- 🐛 App crashes frequently
- 🐛 Doesn't work on iPad, no landscape mode

**Reported bugs**

- Login screen freezes
- Incompatible with older devices
- Doesn't work in dark mode
- Sharing issues with LinkedIn, Twitter, and Facebook

**Requested features**

- Improve iPad experience with landscape mode
- Add support for more social media platforms like Instagram
- Allow cancelling of scheduled posts
- Improve post history tracking and management


## Frequently asked questions

### Is Trillian free?

Trillian is free to download, with in-app purchases available.

### Is Dynamic Signal free?

Dynamic Signal is free to download, with no in-app purchases.

### Which has better reviews, Trillian or Dynamic Signal?

Dynamic Signal is rated higher. Trillian averages 4.1 out of 5 from 574 ratings, while Dynamic Signal averages 4.8 from 7K ratings.

### Do Trillian or Dynamic Signal have ads?

Neither Trillian nor Dynamic Signal shows ads.

### Which is updated more often, Trillian or Dynamic Signal?

Trillian ships an update weekly, and Dynamic Signal monthly. Most recently, Trillian was updated on September 25, 2026 and Dynamic Signal on September 25, 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.*