Thread Calculator vs Metal +
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.
Metal +
Easily calculate the weight and price of various metal forms and alloys. Save your projects and access calculations offline. This tool supports multiple units and metal types for precise results.
- Calculate weight of round, sheet, tube, rectangle forms
- Supports steel, aluminum, nickel, copper, gold, silver alloys
- Calculate paint surface area
- Weight converter
- Price per kilogram/ton converter
- Save items and projects
- Offline functionality
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Metal+ can calculate the weight of any metal form, such as round, sheet, tube, rectangle, and much more. Metal alloys such as steel, aluminum, nickel, copper, gold, silver, and others are supported, and paint surface calculation is performed. To find out how many pieces and how long they are, use the Weight Converter. Calculate price per kilogram / ton from piece price using a price converter. Save items and projects to your favorite list. No need internet (work offline). No background processes. Fast and simple. Less clicks. Accurate results. Remembers your settings for next use. Privacy protected no personal info is collected.
Screenshots
Verdict
The clearest difference is in-app purchases: Thread Calculator at none against Metal +'s 1. Metal +'s advantage is ads (none vs shown) and rating (4.7 vs 4.3). On price, ratings volume 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. Metal + sells 1 one-off in-app purchase. Thread Calculator asks for nothing beyond the download.
Metal + holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 13 and 11 respectively.
Thread Calculator ships an update every 18 months, Metal + every 4 months. The most recent releases landed on September 9, 2026 and September 11, 2026 respectively.
| Parameter | Thread Calculator | Metal + |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (13 ratings) | 4.7 (11 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 13 — better | 11 |
| Update frequency | Every 18 months | Every 4 months — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | GSR Gustav Stursberg GmbH | Mohamed Saad |
Customer experience
Thread Calculator
Metal +
In-app purchases
Thread Calculator
No in-app purchases
Metal +
- Remove Ads$4.99
Questions
Is Thread Calculator free?
Is Metal + free?
Which has better reviews, Thread Calculator or Metal +?
Do Thread Calculator or Metal + have ads?
Which is updated more often, Thread Calculator or Metal +?
Other comparisons
