# ARTT vs IRONDOTS CHAT

The clearest difference is in-app purchases: ARTT at none against IRONDOTS CHAT's 1. ARTT also leads on update cadence (every 2 months vs every 6 months) and iOS requirement (11.0 vs 14.0). On price, ads and device support there is nothing between them.

Both are free to download. IRONDOTS CHAT sells 1 one-off in-app purchase. ARTT asks for nothing beyond the download.

ARTT ships an update every 2 months, IRONDOTS CHAT every 6 months. The most recent releases landed on October 18, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | ARTT | IRONDOTS CHAT |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | — | Free |
| Size | 107 MB | 36 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Thermaltake Technology Co., Ltd.](https://appshunter.io/developer/803754574) | [MICHAL NAPIORKOWSKI IT](https://appshunter.io/developer/1622191838) |

## What reviewers say

### ARTT

[App page](https://appshunter.io/ios/app/artt/id1492399044)

**In-app purchases:** none


### IRONDOTS CHAT

[App page](https://appshunter.io/ios/app/irondots-chat/id6736770133)

This app enables secure, encrypted text messaging solely through sound waves, without requiring an internet connection. It prioritizes user privacy with anonymous operation and robust end-to-end encryption, ensuring messages are unreadable by unauthorized parties.

**Highlights:** Encrypted text messaging via sound, Offline operation, no internet needed, Anonymous usage, no registration required, End-to-end encryption, Physical separation for security, Compliant with European Data Protection Act

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Export/Import Private Key | $29.99 | one-time |


## Frequently asked questions

### Is ARTT free?

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

### Is IRONDOTS CHAT free?

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

### Do ARTT or IRONDOTS CHAT have ads?

Neither ARTT nor IRONDOTS CHAT shows ads.

### Which is updated more often, ARTT or IRONDOTS CHAT?

ARTT ships an update every 2 months, and IRONDOTS CHAT every 6 months. Most recently, ARTT was updated on October 18, 2026 and IRONDOTS CHAT on October 3, 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.*