GB Gas Ventilation Calculator vs Compass Tracking
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GB Gas Ventilation Calculator
Calculate ventilation requirements for gas appliances, including open flued, room sealed, and flueless types. Determine free air area for existing and new vents to ensure suitability for appliances. Simplifies complex calculations by reading appliance data directly.
- Ventilation calculations for gas appliances
- Supports open flued, room sealed, and flueless types
- Calculates for multiple appliances in one room
- Determines free air area of vents
- Reads appliance data directly
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A Gas Ventilation calculator for working out ventilation requirements for gas appliances. Open flued, Room sealed, Flueless appliances. This gives you the option of working out ventilation when more than one appliance is fitted in a room. For existing and new ventilators you can calculate the free air area of the vent to work out if its suitable for the appliance(s) it is feeding. No more formulas and calculations to remember, read the heat input from the appliance data badge and press calculate.
Compass Tracking
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Compass Tracking Application – Compass Asset Protection App now available for iPad & iPhone users This application gives Compass Asset Protection customers the ability to view vehicle tracking information on their iPhone or iPad. Information available includes: Map – Vehicle is plotted on the map. Vehicles – Location, Direction and Speed of the vehicle Reports – Trip data report from vehicle/ date / time selection criteria.
Screenshots
Verdict
The clearest difference is price: Compass Tracking at Free against GB Gas Ventilation Calculator's $3.99. Compass Tracking also leads on update cadence (every 2 months vs every 14 months) and iOS requirement (12.1 vs 26.0). 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
Compass Tracking is free to download; GB Gas Ventilation Calculator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GB Gas Ventilation Calculator ships an update every 14 months, Compass Tracking every 2 months. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.
| Parameter | GB Gas Ventilation Calculator | Compass Tracking |
|---|---|---|
| Price | $3.99 | Free — better |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 14 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.0 | 12.1 — better |
| Further details — not scored | ||
| Size | 3 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | GB-GAS.CO.UK | Compass Asset Protection Ltd |
In-app purchases
GB Gas Ventilation Calculator
No in-app purchases
Compass Tracking
No in-app purchases
Questions
Is GB Gas Ventilation Calculator free?
Is Compass Tracking free?
Do GB Gas Ventilation Calculator or Compass Tracking have ads?
Which is updated more often, GB Gas Ventilation Calculator or Compass Tracking?
Other comparisons
