# Thread Calculator vs Arthrex FieldTekPro

The clearest difference is ads: Arthrex FieldTekPro at none against Thread Calculator's shown. Arthrex FieldTekPro also leads on update cadence (every 5 weeks vs every 18 months). Thread Calculator's advantage is iOS requirement (15.0 vs 26.0). On price, 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.

Thread Calculator ships an update every 18 months, Arthrex FieldTekPro every 5 weeks. The most recent releases landed on September 27, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Thread Calculator | Arthrex FieldTekPro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (13 ratings)](https://appshunter.io/ios/app/thread-calculator/id1559560290/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Every 5 weeks** |
| Monetization | Ad-supported | — |
| Size | 25 MB | 1.2 GB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [GSR Gustav Stursberg GmbH](https://appshunter.io/developer/1559560292) | [Arthrex](https://appshunter.io/developer/544039678) |

## What reviewers say

### 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


### Arthrex FieldTekPro

[App page](https://appshunter.io/ios/app/arthrex-fieldtekpro/id6748090894)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Thread Calculator free?

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

### Is Arthrex FieldTekPro free?

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

### Do Thread Calculator or Arthrex FieldTekPro have ads?

Thread Calculator shows ads; Arthrex FieldTekPro does not.

### Which is updated more often, Thread Calculator or Arthrex FieldTekPro?

Thread Calculator ships an update every 18 months, and Arthrex FieldTekPro every 5 weeks. Most recently, Thread Calculator was updated on September 27, 2026 and Arthrex FieldTekPro on September 29, 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.*