CO2 Filter Calc vs IGC H₂
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CO2 Filter Calc
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The TOMCO Systems Filter Calculator is an assistant tool for sizing CO2 Polishing Filters. This app will help you understand what size filter will be necessary for your system to ensure you get the best product. As the exclusive U.S. distributor of Sure Purity filters, TOMCO2 Systems is proud to offer Sure Purity's high-quality products that are trusted by some of the biggest names in the industry. Sure Purity manufactures an advanced range of carbon dioxide multi-barrier polishing filters – carbogaurd. These barrier filters offer 12-month maintenance intervals while simultaneously offering the most enhanced protection from Carbonyl Sulphide (COS).
IGC H₂
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This application allows you to input a given amount of industrial gas with a unit of measure and converts it to your desired unit of measure. For example, if you have kilos of CO2 and want to convert to gallons.
Screenshots
Verdict
CO2 Filter Calc and IGC H₂ are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
CO2 Filter Calc ships an update weekly, IGC H₂ every 5 days. The most recent releases landed on October 18, 2026 and October 15, 2026 respectively.
| Parameter | CO2 Filter Calc | IGC H₂ |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 13.4 — better |
| Further details — not scored | ||
| Size | 1 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | TOMCO2 Systems Company | Industrial Gas Consultants LLC |
In-app purchases
CO2 Filter Calc
No in-app purchases
IGC H₂
No in-app purchases
Questions
Is CO2 Filter Calc free?
Is IGC H₂ free?
Do CO2 Filter Calc or IGC H₂ have ads?
Which is updated more often, CO2 Filter Calc or IGC H₂?
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