Comparison

EARTH vs Material Master

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Materials selector for rubber

Free

🔧 Utilities

No ratingsView app →

About

EARTH

Features

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This app includes the catalogs,Working Examples,Video for EARTH-CHAIN company products Functions are listed below: -Catalogue: product catalogs -Working Examples: working examples for each products -Video: product video -Member Area: sales agent area -My Favorite: review all download items -Contact us: contact info

About

Material Master

Features

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GMORS Material Master give you the materials recommendation for your O-Ring application, based on the working temperature and medium of working environment. We provide thousand kinds of environment condition for compatibility evaluation. In addition, GMORS provide certified rubber compounds for various international standards, such as NSF61 ,WRAS ,ACS, KTW ,W-270 ,DIN EN 549,UL 157,API 6A,NORSOK M-710,TOTAL EP PVV 142 and NACE TM0297. Please email us for further information.

Screenshots

EARTH1 screens

Material Master4 screens

Verdict

The call

The clearest difference is update cadence: EARTH at every 6 weeks against Material Master's every 14 months. EARTH also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EARTH ships an update every 6 weeks, Material Master every 14 months. The most recent releases landed on October 17, 2026 and October 12, 2026 respectively.

Scorecard3 real differences · 3 level

EARTH versus Material Master: the parameters behind the verdict, then further details
Parameter	EARTH	Material Master
Price	Free	Free
Update frequency	Every 6 weeks — better	Every 14 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod — better	iPhone
Requires iOS	13.0 — better	16.0
Further details — not scored
Size	17 MB	44 MB
Age rating	4+	4+
Developer	GT MARKET CONSULTING CO., LTD.	GE MAO RUBBER INDUSTRIAL CO., LTD.

In-app purchases

None

EARTH

No in-app purchases

None

Material Master

No in-app purchases

Questions

Is EARTH free?

EARTH is free to download, with no in-app purchases.

Is Material Master free?

Material Master is free to download, with no in-app purchases.

Do EARTH or Material Master have ads?

Neither EARTH nor Material Master shows ads.

Which is updated more often, EARTH or Material Master?

EARTH ships an update every 6 weeks, and Material Master every 14 months. Most recently, EARTH was updated on October 17, 2026 and Material Master on October 12, 2026.