Comparison

GB Gas Purging Calculator vs GasCalc Pro

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

Head to head
About

GB Gas Purging Calculator

Features
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Work out gas purging volumes. under IGE/UP1b Domestic installers can work on pipes up to and including 35mm or 1 1/4" and meters up to 16 m3/hr volume. Calculations are required, well not anymore..... select the type of meter, input the lengths of pipe that have or will be installed in the property press calculate It is so simple no more tables or decimal points to get wrong. It even tells you what type of purge procedure should be used. Now includes domestic sized PE Pipes

About

GasCalc Pro

Features
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Master complex gas calculations with ease! Gas Flow Calc is the ultimate all-in-one app for engineers, technicians, and professionals who need precise and fast results for gas flow systems. Whether in the office or on-site โ€“ our app provides all the essential tools directly on your iPhone. Main features: โ€ข Comprehensive calculation modules: โ€ข Gas flow calculator: Determine flow rate, velocity, and more. โ€ข Pipe diameter calculator: Find the optimal pipe size. โ€ข Design pressure calculator: Determine safety-relevant system pressures. โ€ข Cost estimator: Calculate operating costs and compare scenarios. โ€ข Fuel comparison: Analyze the efficiency and costs of different fuels. โ€ข Integrated unit converter: Effortlessly convert between units of pressure, length, mass, temperature, volume, and flow โ€“ save time and avoid mistakes. โ€ข Intuitive & modern interface: A clear, user-friendly design enables quick onboarding and efficient work. Results are displayed clearly and comprehensibly. โ€ข Multilingual support: Fully localized in German, English, Spanish, French, Italian, and Turkish. Gas Flow Calc was developed to simplify your daily work and boost your productivity. Download the app today and experience the future of gas calculations!

Screenshots

GB Gas Purging Calculator4 screens
GasCalc Pro4 screens

Verdict

The call

The clearest difference is price: GasCalc Pro at Free against GB Gas Purging Calculator's $4.99. GB Gas Purging Calculator's advantage is iOS requirement (16.6 vs 26.5). On update cadence, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

GasCalc Pro is free to download; GB Gas Purging Calculator costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

GB Gas Purging Calculator ships an update every 12 months, GasCalc Pro every 7 months. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

Scorecard2 real differences ยท 4 level
GB Gas Purging Calculator versus GasCalc Pro: the parameters behind the verdict, then further details
ParameterGB Gas Purging CalculatorGasCalc Pro
Price$4.99Free โ€” better
Update frequencyEvery 12 monthsEvery 7 months โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 โ€” better26.5
Further details โ€” not scored
Size1 MB3 MB
Age rating4+4+
DeveloperGB-GAS.CO.UKNergiz Calhan

In-app purchases

None

GB Gas Purging Calculator

No in-app purchases

None

GasCalc Pro

No in-app purchases

Questions

Is GB Gas Purging Calculator free?
GB Gas Purging Calculator costs $4.99, with no in-app purchases.
Is GasCalc Pro free?
GasCalc Pro is free to download, with no in-app purchases.
Do GB Gas Purging Calculator or GasCalc Pro have ads?
Neither GB Gas Purging Calculator nor GasCalc Pro shows ads.
Which is updated more often, GB Gas Purging Calculator or GasCalc Pro?
GB Gas Purging Calculator ships an update every 12 months, and GasCalc Pro every 7 months. Most recently, GB Gas Purging Calculator was updated on November 1, 2026 and GasCalc Pro on October 25, 2026.

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