Dr. CheckOff vs IGC H₂
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dr. CheckOff
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Work as a Set Dresser? Or in Wardrobe? Have you ever looked at a pile of paperwork and thought "Maybe coal mining IS for me"? Simply Input pdf files from the major rental prop and costume houses, (they can email these when you pick up) and use your camera to check off the items. You can also add a note about an item, or manually toggle the check status. Note-The pdfs have to be very square. Scans of physical paperwork will work, if they are square. The originals as emailed by production will always work perfect, scans may miss an item or two. I work as a set dresser, and I made sure this thing works for US at every level. If your phone dies, or it crashes mid check? The Dr writes each check each time, so you pick up where you left off. You doing a wrap off grid? The Dr is all offline, just make sure you get the paperwork imported and the Dr will Check it off. That what he does.
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
The clearest difference is update cadence: IGC H₂ at every 5 days against Dr. CheckOff's every 2 weeks. IGC H₂ also leads on iOS requirement (13.4 vs 16.6). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Dr. CheckOff ships an update every 2 weeks, IGC H₂ every 5 days. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.
| Parameter | Dr. CheckOff | IGC H₂ |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 13.4 — better |
| Further details — not scored | ||
| Size | 97 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Trevor Rogers | Industrial Gas Consultants LLC |
In-app purchases
Dr. CheckOff
No in-app purchases
IGC H₂
No in-app purchases
Questions
Is Dr. CheckOff free?
Is IGC H₂ free?
Do Dr. CheckOff or IGC H₂ have ads?
Which is updated more often, Dr. CheckOff or IGC H₂?
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