Comparison

Thread Calculator vs CERATIZIT

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

Head to head
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.

About

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.

Highlights
  • Cutting tools shop access
  • Daily work tools
  • Knowledge content
  • Latest news
  • Cutting data calculator
  • Material classifications
  • Lookup tools
Features
Read full description

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

Thread Calculator4 screens
CERATIZIT4 screens

Verdict

The call

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

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

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Thread Calculator versus CERATIZIT: the parameters behind the verdict, then further details
ParameterThread CalculatorCERATIZIT
PriceFreeFree
Rating4.3 (13 ratings)5.0 (1 ratings) — better
Positive reviews33.3% of reviews—
Number of ratings13 — better1
Update frequencyEvery 18 monthsEvery 2 months — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size25 MB38 MB
Age rating4+4+
DeveloperGSR Gustav Stursberg GmbHCERATIZIT Deutschland GmbH

Customer experience

Thread Calculator

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

CERATIZIT

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

In-app purchases

None

Thread Calculator

No in-app purchases

None

CERATIZIT

No in-app purchases

Questions

Is Thread Calculator free?
Thread Calculator is free to download, with no in-app purchases.
Is CERATIZIT free?
CERATIZIT is free to download, with no in-app purchases.
Which has better reviews, Thread Calculator or CERATIZIT?
CERATIZIT is rated higher. Thread Calculator averages 4.3 out of 5 from 13 ratings, while CERATIZIT averages 5.0 from 1 ratings.
Do Thread Calculator or CERATIZIT have ads?
Thread Calculator shows ads; CERATIZIT does not.
Which is updated more often, Thread Calculator or CERATIZIT?
Thread Calculator ships an update every 18 months, and CERATIZIT every 2 months. Most recently, Thread Calculator was updated on September 9, 2026 and CERATIZIT on September 10, 2026.

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