# MQTT vs NYSTAI

The clearest difference is in-app purchases: NYSTAI at none against MQTT's 2. NYSTAI also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. MQTT sells 2 one-off in-app purchases. NYSTAI asks for nothing beyond the download.

MQTT ships an update every 16 months, NYSTAI every 10 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | MQTT | NYSTAI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 16 months | **Every 10 months** |
| Size | 5 MB | 202 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [109700](https://appshunter.io/developer/573519108) | [ADHIBA TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/1747860288) |

## What reviewers say

### MQTT

[App page](https://appshunter.io/ios/app/mqtt-iot/id6468445528)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to PLUS | $9.99 | one-time |
| Upgrade to PRO | $39.99 | one-time |


### NYSTAI

[App page](https://appshunter.io/ios/app/nystai/id6503040541)

**In-app purchases:** none


## Frequently asked questions

### Is MQTT free?

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

### Is NYSTAI free?

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

### Do MQTT or NYSTAI have ads?

MQTT shows ads; NYSTAI does not.

### Which is updated more often, MQTT or NYSTAI?

MQTT ships an update every 16 months, and NYSTAI every 10 months. Most recently, MQTT was updated on November 3, 2026 and NYSTAI on November 4, 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.*