# MQTT vs Oly

MQTT and Oly are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | MQTT | Oly |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | — |
| Size | 2 MB | 25 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marco Gasser](https://appshunter.io/developer/1625108046) | [Olympia Electronics](https://appshunter.io/developer/916524490) |

## What reviewers say

### MQTT

[App page](https://appshunter.io/ios/app/mqtt-client/id6443841176)

**Features:** macOS Compatibility

**In-app purchases:** none


### Oly

[App page](https://appshunter.io/ios/app/oly-smartkey-pro/id6756615407)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MQTT free?

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

### Is Oly free?

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

### Do MQTT or Oly have ads?

Neither MQTT nor Oly shows ads.

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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.*