# MQTT Loupe vs 4safe

The clearest difference is in-app purchases: MQTT Loupe at none against 4safe's 3. MQTT Loupe also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, update cadence and ads there is nothing between them.

Both are free to download. 4safe sells 3 in-app purchases, starting at $2.99 per month. MQTT Loupe asks for nothing beyond the download.

MQTT Loupe ships an update every 3 weeks, 4safe fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | MQTT Loupe | 4safe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mqtt-loupe/id1617148458/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 6 MB | 42 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jakob Bieling](https://appshunter.io/developer/1617148460) | [Datamob SISTEMAS S/A](https://appshunter.io/developer/1744445923) |

## What reviewers say

### MQTT Loupe

[App page](https://appshunter.io/ios/app/mqtt-loupe/id1617148458)

Inspect MQTT messages exchanged on a broker with this intuitive utility. Connect to brokers, subscribe to topics, and view message details. Features include JSON highlighting, hex viewer, and secure connection options.

**Highlights:** Inspect MQTT messages, Connect to any MQTT broker, Subscribe to topics, Full-text search across topics, JSON highlighting, Hex viewer for binary payloads, Secure connection options

**Features:** macOS Compatibility

**In-app purchases:** none


### 4safe

[App page](https://appshunter.io/ios/app/4safe/id6749896294)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Trimestral | $6.99 | per 3 months |
| Premium Yearly | $19.99 | per year |


## Frequently asked questions

### Is MQTT Loupe free?

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

### Is 4safe free?

4safe is free to download, with in-app purchases available.

### Do MQTT Loupe or 4safe have ads?

Neither MQTT Loupe nor 4safe shows ads.

### Which is updated more often, MQTT Loupe or 4safe?

MQTT Loupe ships an update every 3 weeks, and 4safe fortnightly. Most recently, MQTT Loupe was updated on October 24, 2026 and 4safe on October 24, 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.*