Gas Pipe Sizing Calculator vs Air Flow Conversion Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gas Pipe Sizing Calculator
This utility app simplifies gas pipe sizing by performing calculations based on BTU load, run length, and gas type. It eliminates the need for manual chart and codebook referencing, providing the minimum required pipe size quickly.
- Calculates minimum gas pipe size
- Input BTU load
- Input longest run length
- Select gas type (LP or Natural)
- Designed for low pressure (0.5psi)
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Tired of looking at charts and fumbling around in codebooks in order to size gas pipe? This pipe sizing calculator takes all of that work and hassle out of the equation by calculating it for you, based on the total BTU load, length of the longest run, and type of gas. Simply enter the values, select your gas type (LP or Natural) and hit calculate. The minimum size gas pipe needed will be outputted, so you can continue on with your day. Designed for low pressure, 0.5psi
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.
- 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
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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.
Screenshots
Verdict
The clearest difference is rating: Gas Pipe Sizing Calculator at 4.0 against Air Flow Conversion Calculator's 3.5. Gas Pipe Sizing Calculator also leads on update cadence (every 13 months vs every 47 months) and review sentiment (13% vs 0%). On ratings volume, ads, in-app purchases and monetization model 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
Gas Pipe Sizing Calculator costs $1.99 and Air Flow Conversion Calculator $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Gas Pipe Sizing Calculator holds the better App Store score, 4.0 against 3.5. Both are backed by a comparable volume of ratings — 4 and 11 respectively. Written reviews point the same way: 13% of Gas Pipe Sizing Calculator's written reviews are positive against 0% of Air Flow Conversion Calculator's.
Gas Pipe Sizing Calculator ships an update every 13 months, Air Flow Conversion Calculator every 47 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Gas Pipe Sizing Calculator | Air Flow Conversion Calculator |
|---|---|---|
| Price | $1.99 — better | $2.99 |
| Rating | 4.0 (4 ratings) — better | 3.5 (11 ratings) |
| Positive reviews | 13.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 4 | 11 — better |
| Update frequency | Every 13 months — better | Every 47 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 0 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Connor Kelley | Nitrio |
Customer experience
Gas Pipe Sizing Calculator
Air Flow Conversion Calculator
In-app purchases
Gas Pipe Sizing Calculator
No in-app purchases
Air Flow Conversion Calculator
No in-app purchases
Questions
Is Gas Pipe Sizing Calculator free?
Is Air Flow Conversion Calculator free?
Which has better reviews, Gas Pipe Sizing Calculator or Air Flow Conversion Calculator?
Do Gas Pipe Sizing Calculator or Air Flow Conversion Calculator have ads?
Which is updated more often, Gas Pipe Sizing Calculator or Air Flow Conversion Calculator?
Other comparisons
