Comparison

OJ Air Service tool vs Belimo Assistant 2

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

Head to head
About

OJ Air Service tool

Features
Read full description

This OJ Air service tool allows your Smartphone/tablet to operate as a Cloud gateway when your device has internet access and is connected to an AHC-3000-B AHU controller by Bluetooth. Furthermore it allows you to extract configuration and data log files from the AHU controller. These files can be shared by E-mail. New configuration files and software can be de-tached from your E-mail and transferred to the AHU controller.

About

Belimo Assistant 2

This app allows for the setup, operation, and troubleshooting of Belimo devices like actuators and valves using a smartphone or tablet. It offers features for checking settings, monitoring device status, and generating reports.

Highlights
  • Device setting parameter modification
  • Display identification data
  • MP-Bus, BACnet, Modbus, TCP/IP addressing
  • Guided parameter setup
  • Copy/Paste device configurations
  • Live trending and local override
  • Device health and operation monitoring
  • Digital report generation
Read full description

Belimo Assistant 2 enables wired and wireless setup, on-site operation, and troubleshooting of Belimo damper actuators, control valves, sensors and meters with smartphone and tablet. Key features: • Check and modify device setting parameters • Display identification data: device type, position, designation, serial number, bus address • Addressing (MP-Bus, BACnet, Modbus, TCP/IP) • Setup: guided parameter setup for your device • Copy/Paste configuration: replicate settings for same device type • Live Trend: perform local override and live trending with easy share function • Health: monitor overall device and operation status. E.g. Power supply, Bus state, Sensor state, etc. • Operation: monitor device KPIs with live updates • Reports: retrieve digital reports of your device with easy share function. E.g. Calibration certificate, Commissioning report • Export Device Configuration: create log file with easy share function • In-app language adjustment (EN/DE/FR/IT/ES/CN/RU/TR) Accessories: • LINK.10 (Converter USB / Bluetooth / NFC) • ZTH EU/US/AP (Service tool and Converter USB / MP-Bus) • ZIP-BT-NFC (Converter Bluetooth / NFC) Notes: • The App can be installed on iPhones or iPads with iOS 18+

Screenshots

OJ Air Service tool4 screens
Belimo Assistant 24 screens

Verdict

The call

The clearest difference is update cadence: Belimo Assistant 2 at every 5 weeks against OJ Air Service tool's every 38 months. OJ Air Service tool's advantage is iOS requirement (10.0 vs 17.0). On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

OJ Air Service tool ships an update every 38 months, Belimo Assistant 2 every 5 weeks. The most recent releases landed on October 26, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
OJ Air Service tool versus Belimo Assistant 2: the parameters behind the verdict, then further details
ParameterOJ Air Service toolBelimo Assistant 2
PriceFreeFree
Rating—3.4 (10 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—10 — better
Update frequencyEvery 38 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10.0 — better17.0
Further details — not scored
Size53 MB125 MB
Age rating4+4+
DeveloperOJ ELECTRONICS ASBELIMO Automation AG

In-app purchases

None

OJ Air Service tool

No in-app purchases

None

Belimo Assistant 2

No in-app purchases

Questions

Is OJ Air Service tool free?
OJ Air Service tool is free to download, with no in-app purchases.
Is Belimo Assistant 2 free?
Belimo Assistant 2 is free to download, with no in-app purchases.
Do OJ Air Service tool or Belimo Assistant 2 have ads?
Neither OJ Air Service tool nor Belimo Assistant 2 shows ads.
Which is updated more often, OJ Air Service tool or Belimo Assistant 2?
OJ Air Service tool ships an update every 38 months, and Belimo Assistant 2 every 5 weeks. Most recently, OJ Air Service tool was updated on October 26, 2026 and Belimo Assistant 2 on November 5, 2026.

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