Comparison

MQTT Loupe vs 4safe

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MQTT Loupe

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
Read full description

MQTT Loupe is an intuitive utility to inspect MQTT messages exchanged on an MQTT broker. Connect to any public or local MQTT broker, subscribe to topics and view details of messages being transmitted. Don't remember that one message or topic? Fire up the search to find it instantly using full-text search through all topics, and results updating live with new hits appearing as they arrive. With built-in JSON highlighting, this app is perfect for monitoring Zigbee2Mqtt. And if you need to work with binary message payloads, the built-in hex viewer has you covered. Got frequently used topics that are further down the hierarchy? Make them favorites for easy and instant access. Concerned about security? Let the server's certificate be validated before connecting; you don't have to allow insecure connections based on untrusted certificates. Need more? Provide a client certificate to authenticate yourself against the server. All features in a nutshell: - clean and simple interface - hierarchical topic view - sidebar with history of recently opened topics - powerful full-text search capabilities across all topics and for a single message - search results are automatically updated when new messages arrive - extended message details, with proper formatting and syntax highlighting of JSON messages - support for binary message payloads, displayed as either ISO Latin-1 or in a hex view - easily copy any topic or message value - authentication with username/password or client certificates - connect over MQTT or WebSocket protocol - support for MQTT 3.1.1 and MQTT 5 - support for SSL/TLS - support for the Server Name Indication (SNI) TLS extension - support for self-signed certificates - full server certificate validation - manage and connect multiple brokers at once - full support for quality of service

About

4safe

Features
Read full description

More safety in your daily life with 4safe. Set up a safe location and automatically lock your chosen apps when you leave the defined area. In emergencies, send alerts to your contacts and stay protected.

Screenshots

MQTT Loupe4 screens
4safe4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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

Scorecard3 real differences · 7 level
MQTT Loupe versus 4safe: the parameters behind the verdict, then further details
ParameterMQTT Loupe4safe
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better16.0
Further details — not scored
Size6 MB42 MB
Age rating4+4+
DeveloperJakob BielingDatamob SISTEMAS S/A

In-app purchases

None

MQTT Loupe

No in-app purchases

3 purchases

4safe

Subscriptions3
  • Premium Monthly7 Days trial$2.991 Month
  • Premium Trimestral7 Days trial$6.993 Months
  • Premium Yearly7 Days trial$19.991 Year

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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