# MqttClient vs Frog Otto

The clearest difference is rating: Frog Otto at 5.0 against MqttClient's 1.0. Frog Otto also leads on update cadence (every 3 weeks vs every 10 months) and device support (3 vs 1). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Frog Otto holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

MqttClient ships an update every 10 months, Frog Otto every 3 weeks. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | MqttClient | Frog Otto |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/mqttclient/id928932457/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/frog-otto/id1468989742/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 1 MB | 15 MB |
| Requires iOS | 16.0 | **10.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Luca Ceci](https://appshunter.io/developer/923764949) | [克俭 左](https://appshunter.io/developer/1449795321) |

## What reviewers say

### MqttClient

[App page](https://appshunter.io/ios/app/mqttclient/id928932457)

This utility app provides a fast client for MQTT, the internet of things protocol. It allows users to test broker servers, monitor topics, send and receive messages, and save configurations for quick access. It's designed for testing MQTT broker activities.

**Highlights:** MQTT client functionality, Broker server testing, Topic monitoring, Send and receive messages, Save configurations, User/password authentication

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

**In-app purchases:** none


### Frog Otto

[App page](https://appshunter.io/ios/app/frog-otto/id1468989742)

Control a biped robot using a Bluetooth 4.0 connection. This application allows for a variety of actions to be performed by the robot through its interface.

**Highlights:** Bluetooth 4.0 connectivity, Control biped robot actions, Variety of button controls, Robot movement customization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MqttClient free?

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

### Is Frog Otto free?

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

### Which has better reviews, MqttClient or Frog Otto?

Frog Otto is rated higher. MqttClient averages 1.0 out of 5 from 1 ratings, while Frog Otto averages 5.0 from 1 ratings.

### Do MqttClient or Frog Otto have ads?

Neither MqttClient nor Frog Otto shows ads.

### Which is updated more often, MqttClient or Frog Otto?

MqttClient ships an update every 10 months, and Frog Otto every 3 weeks. Most recently, MqttClient was updated on October 6, 2026 and Frog Otto on October 14, 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.*