Comparison

Air Flow Conversion Calculator vs Megatuner Plus

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

Head to head
About

Air Flow Conversion Calculator

Easily calculate air velocity and airflow volume for various duct types. Input dimensions and units, and get instant results for HVAC and ventilation applications.

Highlights
  • Calculate air velocity and airflow volume
  • Support for circular and rectangular ducts
  • Multiple unit options for velocity, volume, and dimensions
  • Instant result display
  • Useful for HVAC and ventilation
Features
Read full description

Air Flow Conversion Calculator calculate the rate of displacement of air or gas at a specific location. - Enter the air velocity or volume airflow. - Choose circular or rectangular duct and type the required dimension(s), then select the appropriate units. - Result will be displayed instantly. Airflow Value:- Velocity Units: -fl/min (LFM) -m/s -miles/hr (MPH) Volume Airflow Units: -ft3/min (CFM) -m3/hr -L/s Dimension Units: -in -foot -mm -cm -m Air velocity (distance traveled per unit of time) is usually expressed in Linear Feet per Minute (LFM). By multiplying air velocity by the cross section area of a duct, you can determine the air volume flowing past a point in the duct per unit of time. Volume flow is usually measured in Cubic Feet per Minute (CFM). Example Concept of Air Velocity can be used in air conditioning, heating and ventilating work. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

About

Megatuner Plus

Features
Read full description

Introducing an Advanced PID Controller Tuner for iOS. The Megatunes Plus app makes the tuning of your PI/PID controllers of (generally) noisy & possible interacting process loops easier. Using data from your control loop experiments. Our advanced algorithms analyze the data to help you find the optimal settings for your controller, ensuring optimal performance and stability. Example processes: Chemical processing plants, Power Plants, ship position control, to mention some. Features: * Advanced PI/PID Controller Tuner for generally noisy & possible interacting process loops. * User-friendly interface for simple and efficient data input and analysis * Advanced algorithms for accurate and precise model and controller tuning * Convert your PID controller parameters over 20 different DCS vendor forms. Whether you're an experienced engineer or just starting out, our PI/PID controller tuner app for iOS can help you fine-tune your control loop and improve your process control system. Download now and start optimizing your loops today! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Air Flow Conversion Calculator4 screens
Megatuner Plus4 screens

Verdict

The call

The clearest difference is price: Megatuner Plus at Free against Air Flow Conversion Calculator's $2.99. Megatuner Plus also leads on update cadence (every 5 weeks vs every 47 months). Air Flow Conversion Calculator's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 16.0). 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

Megatuner Plus is free to download; Air Flow Conversion Calculator costs $2.99 up front. Megatuner Plus sells 2 in-app purchases, starting at $4.49 per month. Air Flow Conversion Calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Air Flow Conversion Calculator ships an update every 47 months, Megatuner Plus every 5 weeks. The most recent releases landed on October 5, 2026 and October 19, 2026 respectively.

Scorecard4 real differences · 6 level
Air Flow Conversion Calculator versus Megatuner Plus: the parameters behind the verdict, then further details
ParameterAir Flow Conversion CalculatorMegatuner Plus
Price$2.99Free — better
Rating3.5 (11 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings11 — better—
Update frequencyEvery 47 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size8 MB1 MB
Age rating4+17+
DeveloperNitrioChrister Dalen

In-app purchases

None

Air Flow Conversion Calculator

No in-app purchases

2 purchases

Megatuner Plus

Subscriptions2
  • Megatuner_Mimo Full$4.491 Month
  • Megatuner_Mimo Full$44.901 Year

Questions

Is Air Flow Conversion Calculator free?
Air Flow Conversion Calculator costs $2.99, with no in-app purchases.
Is Megatuner Plus free?
Megatuner Plus is free to download, with in-app purchases available.
Do Air Flow Conversion Calculator or Megatuner Plus have ads?
Neither Air Flow Conversion Calculator nor Megatuner Plus shows ads.
Which is updated more often, Air Flow Conversion Calculator or Megatuner Plus?
Air Flow Conversion Calculator ships an update every 47 months, and Megatuner Plus every 5 weeks. Most recently, Air Flow Conversion Calculator was updated on October 5, 2026 and Megatuner Plus on October 19, 2026.

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