Comparison

ArcAir vs Wind Triangle

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

Head to head
About

ArcAir

This app facilitates the online monitoring and visualization of various sensor data for biotechnological processes. It allows wireless communication with multiple sensors simultaneously and provides central data management, reporting, and validation for sensor calibration and configuration, supporting GMP guidelines.

Highlights
  • Online sensor monitoring
  • Data visualization
  • Wireless sensor communication
  • Central data management
  • Sensor calibration validation
  • Paperless workflow support
Read full description

ArcAir is the app for Hamilton Arc sensors. It enables online monitoring and visualization of pH, dissolved oxygen, CO2, cell density, conductivity, and ORP sensors during biotechnological processes. With the ArcAir application, you can communicate wirelessly with up to 100 Arc sensors at the same time parallel to the process control system interface when an Arc Wi Bluetooth adapter is connected between the VP head of an Arc sensor and the VP sensor cable or the sensor has inbuilt Bluetooth functionality. Within the ArcAir application, Hamilton provides reporting and central data management of users, as well as validation reports for sensor calibration (excluding VCD sensors), verification, configuration, and communication. ArcAir embeds report’s electronic signatures, enabling paperless workflow. All of this complies with the GMP guidelines such as FDA CFR21 Part 11 or Eudralex Volume 4 Annex 11.

About

Wind Triangle

Features
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Calculate heading and ground speed for flight planning, wind speed and direction for in-flight wind assessment, or any other parameter in the aviation wind triangle! Whether you need an easy wind solver for flight planning or you're a student pilot learning the ins and outs of the E6B wind side, this app makes solving the wind triangle intuitive and easy. With the in-flight wind assessment (GPS-enabled devices only), the app uses GPS and heading to automatically calculate the current wind at your altitude by just inputting your TAS or CAS with conditions. This brings integrated flight deck capabilities to your aircraft with a readout of your current head/tail- and crosswind components. Inputs supported: heading, true airspeed, ground speed, track, wind direction, wind speed. Input any four parameters and the app calculates the rest. Calibrated airspeed (CAS) may be set instead of TAS. Inputting CAS prompts you to set barometric setting, indicated altitude, and outside air temperature (OAT). From this, TAS, pressure altitude, and density altitude are calculated. Try GPS mode (supported devices only) on the ground by enabling the GPS Demo Mode option.

Screenshots

ArcAir1 screens
Wind Triangle2 screens

Verdict

The call

The clearest difference is price: ArcAir at Free against Wind Triangle's $2.99. ArcAir also leads on iOS requirement (13.0 vs 17.6). Wind Triangle's advantage is in-app purchases (none vs 2) and update cadence (every 2 months vs every 5 months). On ads 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

ArcAir is free to download; Wind Triangle costs $2.99 up front. ArcAir sells 2 one-off in-app purchases. Wind Triangle asks for nothing beyond the download.

UpkeepUpdate frequency

ArcAir ships an update every 5 months, Wind Triangle every 2 months. The most recent releases landed on November 2, 2026 and November 9, 2026 respectively.

Scorecard4 real differences · 6 level
ArcAir versus Wind Triangle: the parameters behind the verdict, then further details
ParameterArcAirWind Triangle
PriceFree — better$2.99
Rating4.0 (8 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings8 — better—
Update frequencyEvery 5 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS13.0 — better17.6
Further details — not scored
Size21 MB1 MB
Age rating4+4+
DeveloperHamilton AGSmall Aviation Tools

In-app purchases

2 purchases

ArcAir

One-time2
  • ArcAir Basic VersionFree
  • ArcAir Advanced Version$199.99
None

Wind Triangle

No in-app purchases

Questions

Is ArcAir free?
ArcAir is free to download, with in-app purchases available.
Is Wind Triangle free?
Wind Triangle costs $2.99, with no in-app purchases.
Do ArcAir or Wind Triangle have ads?
Neither ArcAir nor Wind Triangle shows ads.
Which is updated more often, ArcAir or Wind Triangle?
ArcAir ships an update every 5 months, and Wind Triangle every 2 months. Most recently, ArcAir was updated on November 2, 2026 and Wind Triangle on November 9, 2026.

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