# Chatmark vs Iris

The clearest difference is in-app purchases: Chatmark at none against Iris's 2. Iris's advantage is update cadence (every 3 weeks vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Iris sells 2 in-app purchases, starting at $3.99 per month. Chatmark asks for nothing beyond the download.

Chatmark ships an update every 6 weeks, Iris every 3 weeks. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Chatmark | Iris |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 27 MB | 53 MB |
| Requires iOS | **16** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Taeeun Kim](https://appshunter.io/developer/1580920574) | [KENNETH CHIN WEI YOW](https://appshunter.io/developer/6783362022) |

## What reviewers say

### Chatmark

[App page](https://appshunter.io/ios/app/chatmark/id6768804618)

**Features:** macOS Compatibility

**In-app purchases:** none


### Iris

[App page](https://appshunter.io/ios/app/iris-work-notes/id6783362020)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Iris Plus Monthly | $3.99 | per month |
| Iris Plus Yearly | $29.99 | per year |


## Frequently asked questions

### Is Chatmark free?

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

### Is Iris free?

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

### Do Chatmark or Iris have ads?

Neither Chatmark nor Iris shows ads.

### Which is updated more often, Chatmark or Iris?

Chatmark ships an update every 6 weeks, and Iris every 3 weeks. Most recently, Chatmark was updated on October 1, 2026 and Iris on October 11, 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.*