GB Gas Heat Input Calculator is a specialized utility for UK gas engineers to calculate heat input and gas rates on iOS.
The App DNA
What makes this app unique?
Engineers use the app to eliminate manual chart lookups during site assessments, reducing the time required for regulatory compliance checks.
For UK-based plumbers, gas engineers, and apprentices preparing for MLP or ACS assessments.
What does it look like?
Key features
Calculates heat input and gas rate via two-reading timing inputs.
Calculates heat input and gas rate via single-revolution timing.
Premium-tier gate for domestic natural gas regulations and practical methods.
How much does it cost?
Subscription model targets both individual trainees and B2B training centers, anchoring at £24.99/month to capture recurring revenue from certification preparation.
Velocity
Dormant developmentopaqueShow more...
GB Gas Heat Input Calculator has been inactive for 2,143 days, placing it firmly in the zombie category. There has been no development activity or feature updates for over five years. The last release was a minor update focused on a marketing URL and general fixes, and the project shows no signs of ongoing maintenance.
Who built it?
GB-GAS.CO.UK
9 apps tracked · Business
GB Gas Pipe Sizing Calculator
GB Gas Purging Calculator
GB Gas Conversion Calculator
GB Gas Onsite Guide
GB Gas Tightness NG + LPG
GB Gas Ventilation Calculator
GB Gas Rate Calculator
GB GAS L.P.G. PIPE SIZING APPUser Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for GB Gas Heat Input Calculator
How's the Business market?
GB Gas Heat Input Calculator serves a specialized professional niche in the UK market. The subscription-heavy pricing model targets high-intent users, yet the 2143-day gap since the last store update limits its competitive standing against modern utility apps.
Read the market outlookThe rivals identified
Unlock the deeper market read.
Access the full report for freeThe Analyst's Read
Key takeaways for GB Gas Heat Input Calculator
Where is it heading?
The market for specialized gas engineering utilities remains steady, as regulatory requirements for ACS and MLP assessments are consistent. GB Gas Heat Input Calculator maintains a stable position by serving a niche audience, but the lack of updates limits its ability to capture new users who expect modern mobile workflows.
- The five-year development gap suggests a stable, maintenance-only posture rather than active growth or decline.
- The subscription-based B2B training center accounts provide a recurring revenue stream that does not rely on frequent feature updates.
The SWOT
- Automated meter calculations remove manual lookup errors during site assessments
- Digital logbook integration could expand utility for training centers
Next best moves
Audit current codebase because the app has been dormant for 71 months → determine feasibility of modernizing the UI
The counter-intuitive read
The app's long-term dormancy is a feature, not a bug…
Read the full takeSince the last report: The app's competitive outlook shifted from declining to stable, as the developer and analysts now frame the five-year development freeze as a functional choice for static trade calculations rather than a sign of imminent obsolescence.
Bottom line
The app provides a functional utility for gas engineers, but the five-year development gap undermines its professional value. Modernizing the core interface would unlock retention among the existing subscriber base, preventing further churn to more active utility competitors.
Unlock 1 critical friction, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Is GB Gas Heat Input Calculator suitable for trainee gas engineers?
How does the subscription model work for training centers?
Does the app require an internet connection to perform calculations?
Sources
Report last updated