Thread Calculator vs CNC Path
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.
CNC Path
This app serves as a mobile workspace for managing, editing, and visualizing CNC programs. It offers features like a local library for programs, a mobile-friendly editor, and on-device OCR for importing from images. Users can also simulate toolpaths and look up CNC instructions.
- Local Program Library
- Mobile-friendly editor
- OCR program import
- Toolpath simulation
- CNC instruction lookup
- Syntax checking
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CNC Path is an iPhone and iPad workspace for CNC professionals and learners to manage, edit, OCR-import, and visualize supported CNC programs. Key features: - Create, organize, import, and export CNC programs in a local Program Library - View and edit CNC program text with a mobile-friendly editor - Import programs from camera or images with on-device OCR and review the result before saving - Look up CNC instructions and their current support boundaries - Run lightweight toolpath simulation for supported basic instructions - Use OCR, import/export, syntax checking, and advanced macro-program, fixed-cycle, and arithmetic-expression simulation The Program Library, editing, instruction reference, and ordinary supported simulation remain free. OCR, import/export, syntax checking, macro programs, fixed cycles, and arithmetic-expression simulation require an active trial or membership. The seven-day trial starts only when selected and does not renew or charge. Monthly and Pro Lifetime Unlock prices are shown by the App Store. CNC Path provides auxiliary toolpath visualization only. It does not guarantee collision detection, machining safety, or complete real-machine verification. Users must manually verify OCR results and CNC programs. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: CNC Path at 5.0 against Thread Calculator's 4.4. CNC Path also leads on ads (none vs shown) and update cadence (every 4 days vs every 18 months). Thread Calculator's advantage is in-app purchases (none vs 2) and ratings volume (14 vs 2). On price, 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. CNC Path sells 2 in-app purchases, starting at $0.99 per month. Thread Calculator asks for nothing beyond the download.
CNC Path holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Thread Calculator has 14 ratings behind it against 2, so its average is the more settled of the two.
Thread Calculator ships an update every 18 months, CNC Path every 4 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | Thread Calculator | CNC Path |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (14 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 14 — better | 2 |
| Update frequency | Every 18 months | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 25 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | GSR Gustav Stursberg GmbH | 宇 张 |
Customer experience
Thread Calculator
CNC Path
In-app purchases
Thread Calculator
No in-app purchases
CNC Path
- Monthly Membership$0.991 Month
- 专业版永久解锁$7.99









