Sentinel InstaCheck + vs QuickGasCerts
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sentinel InstaCheck +
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Used in conjunction with the InstaCheck water test kit - sold separately - the app guides users through best practice guidelines based on BS7593 standard; It generates a water quality report with tailored recommendations for ongoing system care, according to water test results. InstaCheck allows users to follow UK best practice at install and service visits, ensuring boiler and heat pump installations are protected against corrosion and scaling. Poor water quality and inadequate treatment can result in breakdowns, loss of heating efficiency and excessive fuel consumption; The tests and recommendations in InstaCheck reports are designed to help protect installations from these common problems.
QuickGasCerts
This app streamlines the creation and management of Gas Safety Certificates for gas engineers. It offers a user-friendly interface to simplify administrative tasks.
- Create Gas Safety Certificates
- Manage Certificates
- Easy-to-use interface
- Mobile convenience
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Quick Gas Certs is a powerful, easy-to-use mobile app designed to simplify the way gas engineers create and manage Gas Safety Certificates. Terms of Use: https://quickgascerts.blogspot.com/2025/07/terms-of-use.html Privacy Policy: https://sites.google.com/view/quickgascerts/privacy-policy
Screenshots
Verdict
The clearest difference is in-app purchases: Sentinel InstaCheck + at none against QuickGasCerts's 3. Sentinel InstaCheck + also leads on iOS requirement (15.0 vs 18.5). QuickGasCerts's advantage is update cadence (every 3 weeks vs every 4 months). On price, 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
Both are free to download. QuickGasCerts sells 3 in-app purchases, starting at $19.99 per year. Sentinel InstaCheck + asks for nothing beyond the download.
Sentinel InstaCheck + ships an update every 4 months, QuickGasCerts every 3 weeks. The most recent releases landed on September 10, 2026 and September 6, 2026 respectively.
| Parameter | Sentinel InstaCheck + | QuickGasCerts |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 3 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Energy & Compliance Technology Ltd | Peter Smith |
In-app purchases
Sentinel InstaCheck +
No in-app purchases
QuickGasCerts
- Quick Gas Certs$19.991 Year
- asdasd$39.991 Month
- Yearly subscription$19.99
Questions
Is Sentinel InstaCheck + free?
Is QuickGasCerts free?
Do Sentinel InstaCheck + or QuickGasCerts have ads?
Which is updated more often, Sentinel InstaCheck + or QuickGasCerts?
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