# ThreadKing vs Thread Calculator

The clearest difference is review sentiment: ThreadKing at 100% against Thread Calculator's 33%. ThreadKing also leads on ads (none vs shown) and update cadence (every 6 days vs every 18 months). On price, ratings volume, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ThreadKing holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 12 and 13 respectively. Written reviews point the same way: 100% of ThreadKing's written reviews are positive against 33% of Thread Calculator's.

ThreadKing ships an update every 6 days, Thread Calculator every 18 months. The most recent releases landed on October 9, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | ThreadKing | Thread Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (12 ratings)](https://appshunter.io/ios/app/threadking/id1073753793/reviews)** | [4.3 (13 ratings)](https://appshunter.io/ios/app/thread-calculator/id1559560290/reviews) |
| Number of ratings | 12 | **13** |
| Positive reviews | **100.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Every 18 months |
| Monetization | **Free** | Ad-supported |
| Size | 7 MB | 25 MB |
| Requires iOS | **8.1** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [GSR Gustav Stursberg GmbH](https://appshunter.io/developer/1559560292) |

## What reviewers say

### ThreadKing

[App page](https://appshunter.io/ios/app/threadking/id1073753793)

This app serves as a comprehensive reference and calculator for various thread types and dimensions. It provides detailed information on Metric and UN threads, including tap sizes and thread calculations for cutting and forming taps. Users can also find drill size charts and calculate RPM and feed rates for different materials.

**Highlights:** Metric and UN thread reference, Drill/Tap size charts, Pipe thread information, Cutting tap calculator, Forming tap calculator, RPM and feed rate calculator, Thread dimension details

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Thread Calculator

[App page](https://appshunter.io/ios/app/thread-calculator/id1559560290)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ThreadKing free?

ThreadKing is free to download, with no in-app purchases.

### Is Thread Calculator free?

Thread Calculator is free to download, with no in-app purchases.

### Which has better reviews, ThreadKing or Thread Calculator?

ThreadKing is rated higher. ThreadKing averages 4.7 out of 5 from 12 ratings, while Thread Calculator averages 4.3 from 13 ratings.

### Do ThreadKing or Thread Calculator have ads?

Thread Calculator shows ads; ThreadKing does not.

### Which is updated more often, ThreadKing or Thread Calculator?

ThreadKing ships an update every 6 days, and Thread Calculator every 18 months. Most recently, ThreadKing was updated on October 9, 2026 and Thread Calculator on September 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*