Thread Calculator vs Toolbox DIY
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.
Toolbox DIY
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Toolbox DIY is a focused field reference and project notebook for makers, woodworkers, electricians, and home renovators. A clean specs library, a real project log, and a quick math pad — all on a single stage. No signup, no popups, no upsells. KEY FEATURES • Screw size reference with shaft and head dimensions for common gauges • Drill bit chart matching pilot, clearance, and tap sizes to screws and bolts • Wire gauge table with AWG diameters, ampacity, and common uses • Lumber dimensions: nominal vs actual sizing for framing and sheet stock • Project log: save measurements per project so you stop losing them on scraps of paper • Math pad with the conversions and shop arithmetic you actually use • Dark, glare-resistant theme designed for shop and jobsite lighting DESIGNED FOR REAL WORK Whether you are roughing in framing, picking the right pilot bit for a deck screw, or pulling wire for a new circuit, Toolbox DIY keeps the answer one tap away. PRIVACY No tracking. No accounts. Your saved projects live on your device.
Screenshots
Verdict
The clearest difference is ads: Toolbox DIY at none against Thread Calculator's shown. Thread Calculator's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price and in-app purchases 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.
| Parameter | Thread Calculator | Toolbox DIY |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (13 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Every 18 months | — |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 25 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | GSR Gustav Stursberg GmbH | Linh Phan Nhat Khanh |
In-app purchases
Thread Calculator
No in-app purchases
Toolbox DIY
No in-app purchases
Questions
Is Thread Calculator free?
Is Toolbox DIY free?
Do Thread Calculator or Toolbox DIY have ads?
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