Seals Catalog vs Thread Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Detailed product descriptions
- Material data sheets
- Seal comparison tool
- Product search and filtering
- Request quotation
- Shopping cart functionality
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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!
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.
- Thread cutting calculator for multiple units
- Cold forming calculator
- Thread repair calculator
- Tap hole and bolt diameter calculation
- Saves time compared to tables
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | Seals Catalog | Thread Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.3 (13 ratings) |
| Positive reviews | — | 33.3% of reviews |
| Number of ratings | 1 | 13 — better |
| Update frequency | Every 10 months — better | Every 18 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 34 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Trelleborg Sealing Solutions | GSR Gustav Stursberg GmbH |
Customer experience
Seals Catalog
Thread Calculator
In-app purchases
Seals Catalog
No in-app purchases
Thread Calculator
No in-app purchases
Questions
Is Seals Catalog free?
Is Thread Calculator free?
Which has better reviews, Seals Catalog or Thread Calculator?
Do Seals Catalog or Thread Calculator have ads?
Which is updated more often, Seals Catalog or Thread Calculator?
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