Gas Pipe Sizing Calculator vs Lennox Smart Tech
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
Lennox Smart Tech
Streamline the installation and servicing of compatible home comfort systems. This app allows for remote testing, diagnostics, and system setting adjustments directly from a smartphone, reducing the need to physically interact with equipment.
- Install and service home comfort systems
- Test and run diagnostics remotely
- Adjust system settings from smartphone
- Compatible with Lennox S40/L40/M40/E40 Smart Thermostats
- Direct smartphone control
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With the Lennox Smart Tech App, you'll have the latest technology to more quickly and easily install and service a fully communicating home comfort system with the Lennox S40/L40/M40/E40 Smart Thermostat. You can reliably run tests, diagnostics, and change system settings directly from your smartphone without the back and forth from equipment to thermostat.
Screenshots
Verdict
The clearest difference is price: Lennox Smart Tech at Free against Gas Pipe Sizing Calculator's $1.99. Lennox Smart Tech also leads on rating (4.5 vs 4.0) and update cadence (every 2 months vs every 13 months). Gas Pipe Sizing Calculator's advantage is review sentiment (13% vs 0%) and iOS requirement (12.0 vs 16.0). On 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
Lennox Smart Tech is free to download; Gas Pipe Sizing Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Lennox Smart Tech holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Lennox Smart Tech has 60 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 13% of Gas Pipe Sizing Calculator's written reviews are positive against 0% of Lennox Smart Tech's, so the app with the better star average is not the one people write more warmly about.
Gas Pipe Sizing Calculator ships an update every 13 months, Lennox Smart Tech every 2 months. The most recent releases landed on October 15, 2026 and October 22, 2026 respectively.
| Parameter | Gas Pipe Sizing Calculator | Lennox Smart Tech |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.0 (4 ratings) | 4.5 (60 ratings) — better |
| Positive reviews | 13.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 4 | 60 — better |
| Update frequency | Every 13 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 0 MB | 98 MB |
| Age rating | 4+ | 4+ |
| Developer | Connor Kelley | Lennox Industries |
Customer experience
Gas Pipe Sizing Calculator
Lennox Smart Tech
In-app purchases
Gas Pipe Sizing Calculator
No in-app purchases
Lennox Smart Tech
No in-app purchases
Questions
Is Gas Pipe Sizing Calculator free?
Is Lennox Smart Tech free?
Which has better reviews, Gas Pipe Sizing Calculator or Lennox Smart Tech?
Do Gas Pipe Sizing Calculator or Lennox Smart Tech have ads?
Which is updated more often, Gas Pipe Sizing Calculator or Lennox Smart Tech?
Other comparisons
