# ThreadKing vs FairOrg LeadApp

The clearest difference is update cadence: ThreadKing at every 6 days against FairOrg LeadApp's every 28 months. On price, ads, 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 ships an update every 6 days, FairOrg LeadApp every 28 months. The most recent releases landed on September 22, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | ThreadKing | FairOrg LeadApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (12 ratings)](https://appshunter.io/ios/app/threadking/id1073753793/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 28 months |
| Monetization | Free | — |
| Size | 7 MB | 3 MB |
| Requires iOS | 8.1 | **8.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [fairtec Kommunikationstechnik GmbH](https://appshunter.io/developer/1460125759) |

## 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


### FairOrg LeadApp

[App page](https://appshunter.io/ios/app/fairorg-leadapp/id1460125760)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ThreadKing free?

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

### Is FairOrg LeadApp free?

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

### Do ThreadKing or FairOrg LeadApp have ads?

Neither ThreadKing nor FairOrg LeadApp shows ads.

### Which is updated more often, ThreadKing or FairOrg LeadApp?

ThreadKing ships an update every 6 days, and FairOrg LeadApp every 28 months. Most recently, ThreadKing was updated on September 22, 2026 and FairOrg LeadApp on September 7, 2026.

---

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