Comparison

Seals Catalog vs Thread Calculator

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

Head to head
About

Seals Catalog

Access detailed product information, material data sheets, and compare multiple seals. Filter products by item number, type, or operating conditions to find specific items. Request quotations directly through the app by adding items to a shopping cart.

Highlights
  • Detailed product descriptions
  • Material data sheets
  • Seal comparison tool
  • Product search and filtering
  • Request quotation
  • Shopping cart functionality
Features
Read full description

The Seals e-Catalog brings the high-powered function of our web e-Catalog to you in a mobile friendly app. You can find detailed product descriptions, material data sheets and even compare multiple seals with the app. If you need help finding a specific product, you can use the convenient search tool to filter products by item number, type of seal or even the operating conditions. Once you find the correct product, you can then request a quotation through the app. A simple-to-use service lets you load up a shopping cart and send it through to your local marketing company for quotation. You are guaranteed a rapid response, making the whole process of specifying and ordering seals easier and quicker than ever!

About

Thread Calculator

This app provides a quick and easy way to calculate thread dimensions for various units, including tap hole sizes and bolt specifications. It helps metalworkers find precise measurements for internal and external threads without consulting tables.

Highlights
  • Thread cutting calculator for multiple units
  • Cold forming calculator
  • Thread repair calculator
  • Tap hole and bolt diameter calculation
  • Saves time compared to tables
Features
Read full description

The app includes: - A calculator for thread cutting for the following units: M, MF, UNC, UNEF, UNF, UNR, UNS, NPT, NPTF, NPSC, NPSF, NPSL, NPSM, BA, BSP, BSF, BSW, BSPP, TR, and TRF - A calculator for cold forming - A calculator for thread repair You want to know which tap hole you should drill for threading or which bolt you should use? With this app, you will find the desired measures in no time: Simply select the desired thread type, nominal size, and pitch and you will get the matching diameter for your project. This saves precious time you would have spent tediously searching for internal and external thread dimensions in tables. As this app is still in its development phase, new features will follow soon, so stay tuned! GSR Gustav Stursberg GmbH is a manufacturer for high-quality thread cutting tools with 130 years of operational experience in the area of threading tool production. The product portfolio includes a wide selection of tools for different areas of application. GSR taps, twist drills, round dies, and tool holders are manufactured to the highest quality standards in our own production facilities. The constant quality control during the production process guarantees a consistent good quality in all national as well as international production facilities. This requires enormous precision, which is reflected by our tools. Precision is in the details. Since 1889.

Screenshots

Seals Catalog1 screens
Thread Calculator4 screens

Verdict

The call

The clearest difference is rating: Seals Catalog at 5.0 against Thread Calculator's 4.3. Seals Catalog also leads on ads (none vs shown) and monetization model (free vs ad-supported). Thread Calculator's advantage is ratings volume (13 vs 1). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Seals Catalog holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Thread Calculator has 13 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Seals Catalog ships an update every 10 months, Thread Calculator every 18 months. The most recent releases landed on June 22, 2026 and September 9, 2026 respectively.

Scorecard5 real differences · 5 level
Seals Catalog versus Thread Calculator: the parameters behind the verdict, then further details
ParameterSeals CatalogThread Calculator
PriceFreeFree
Rating5.0 (1 ratings) — better4.3 (13 ratings)
Positive reviews—33.3% of reviews
Number of ratings113 — better
Update frequencyEvery 10 months — betterEvery 18 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.0
Further details — not scored
Size34 MB25 MB
Age rating4+4+
DeveloperTrelleborg Sealing SolutionsGSR Gustav Stursberg GmbH

Customer experience

Seals Catalog

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Thread Calculator

All ratings13 ratings
Positive84.6%
Neutral7.7%
Negative7.7%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

None

Seals Catalog

No in-app purchases

None

Thread Calculator

No in-app purchases

Questions

Is Seals Catalog free?
Seals Catalog is free to download, with no in-app purchases.
Is Thread Calculator free?
Thread Calculator is free to download, with no in-app purchases.
Which has better reviews, Seals Catalog or Thread Calculator?
Seals Catalog is rated higher. Seals Catalog averages 5.0 out of 5 from 1 ratings, while Thread Calculator averages 4.3 from 13 ratings.
Do Seals Catalog or Thread Calculator have ads?
Thread Calculator shows ads; Seals Catalog does not.
Which is updated more often, Seals Catalog or Thread Calculator?
Seals Catalog ships an update every 10 months, and Thread Calculator every 18 months. Most recently, Seals Catalog was updated on June 22, 2026 and Thread Calculator on September 9, 2026.

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