Thread Calculator vs CERATIZIT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
CERATIZIT
Access a cutting tools shop, utilize helpful daily work tools, and find industry knowledge and news. Features like a cutting data calculator and material classifications streamline your tasks.
- Cutting tools shop access
- Daily work tools
- Knowledge content
- Latest news
- Cutting data calculator
- Material classifications
- Lookup tools
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Via the CERATIZIT app you have access to our cutting tools shop, can use helpful tools for your daily work and find valuable knowledge content as well as the latest news. Features such as the cutting data calculator, material classifications, as well as lookup tools ease and support your daily work. The app for everyone in the cutting industry, regardless of whether you are a CERATIZIT customer or not.
Screenshots
Verdict
The clearest difference is rating: CERATIZIT at 5.0 against Thread Calculator's 4.3. CERATIZIT also leads on ads (none vs shown) and update cadence (every 2 months vs every 18 months). Thread Calculator's advantage is ratings volume (13 vs 1). On price, in-app purchases, device support and iOS requirement 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.
CERATIZIT 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.
Thread Calculator ships an update every 18 months, CERATIZIT every 2 months. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.
| Parameter | Thread Calculator | CERATIZIT |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (13 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 13 — better | 1 |
| Update frequency | Every 18 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 25 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | GSR Gustav Stursberg GmbH | CERATIZIT Deutschland GmbH |
Customer experience
Thread Calculator
CERATIZIT
In-app purchases
Thread Calculator
No in-app purchases
CERATIZIT
No in-app purchases
Questions
Is Thread Calculator free?
Is CERATIZIT free?
Which has better reviews, Thread Calculator or CERATIZIT?
Do Thread Calculator or CERATIZIT have ads?
Which is updated more often, Thread Calculator or CERATIZIT?
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