Comparison

TCP ModBus vs MQTT

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

Head to head
About

TCP ModBus

Features
Read full description

TCP Modbus - the application created for testing and debugging of systems supporting TCP ModBus protocol. Simulation sensors, send control commands, read data registers, and others. - Operation as a server or a client; - supports two modes slave and master; - reading and writing data register; - storage of the last session of the data; - storage connection settings; - support decrypting of incoming message.

About

MQTT

Features
Read full description

The app has a control range with the ability to control between zero and five lights and doors, depending on the use case. By means of a red-green indicator, the user is shown the connection status of the server. In the settings area of the app the server connection details can be entered. Depending on the use case, the controls for the lights or doors can be switched on and off. For the individual lights and doors, the corresponding theme as well as the message can be set. In addition, further settings for the transmission can be selected.

Screenshots

TCP ModBus4 screens
MQTT4 screens

Verdict

The call

The clearest difference is update cadence: TCP ModBus at every 4 days against MQTT's every 11 months. TCP ModBus also leads on iOS requirement (8.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

TCP ModBus ships an update every 4 days, MQTT every 11 months. The most recent releases landed on September 27, 2026 and September 12, 2026 respectively.

Scorecard2 real differences ยท 4 level
TCP ModBus versus MQTT: the parameters behind the verdict, then further details
ParameterTCP ModBusMQTT
PriceFreeFree
Update frequencyEvery 4 days โ€” betterEvery 11 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPod
Requires iOS8.0 โ€” better15.0
Further details โ€” not scored
Size1 MB2 MB
Age rating4+4+
DeveloperะขะŸะฃMarco Gasser

In-app purchases

None

TCP ModBus

No in-app purchases

None

MQTT

No in-app purchases

Questions

Is TCP ModBus free?
TCP ModBus is free to download, with no in-app purchases.
Is MQTT free?
MQTT is free to download, with no in-app purchases.
Do TCP ModBus or MQTT have ads?
Neither TCP ModBus nor MQTT shows ads.
Which is updated more often, TCP ModBus or MQTT?
TCP ModBus ships an update every 4 days, and MQTT every 11 months. Most recently, TCP ModBus was updated on September 27, 2026 and MQTT on September 12, 2026.

Other comparisons