# Thread Calculator vs Machining Assistant

The clearest difference is price: Thread Calculator at Free against Machining Assistant's $0.99. Thread Calculator also leads on review sentiment (33% vs 0%). Machining Assistant's advantage is ads (none vs shown) and update cadence (every 5 weeks vs every 18 months). On in-app purchases, device support and iOS requirement there is nothing between them.

Thread Calculator is free to download; Machining Assistant costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Thread Calculator ships an update every 18 months, Machining Assistant every 5 weeks. The most recent releases landed on September 27, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Thread Calculator | Machining Assistant |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.3 (13 ratings)](https://appshunter.io/ios/app/thread-calculator/id1559560290/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | **33.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Every 5 weeks** |
| Monetization | **Ad-supported** | Paid |
| Size | 25 MB | 8 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GSR Gustav Stursberg GmbH](https://appshunter.io/developer/1559560292) | [小燕 陈](https://appshunter.io/developer/1462872555) |

## 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


### Machining Assistant

[App page](https://appshunter.io/ios/app/machining-assistant/id6766735667)

This tool simplifies complex machining calculations for engineers and technicians. It offers features for cutting parameters, material weight, tolerance and fit analysis, and thread data. Designed for efficiency and accuracy, it works offline and provides a user-friendly interface.

**Highlights:** Cutting parameter calculation, Material weight and volume, Tolerance and fit analysis, Thread data and formulas, Offline functionality, Material database

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

**In-app purchases:** none


## Frequently asked questions

### Is Thread Calculator free?

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

### Is Machining Assistant free?

Machining Assistant costs $0.99, with no in-app purchases.

### Do Thread Calculator or Machining Assistant have ads?

Thread Calculator shows ads; Machining Assistant does not.

### Which is updated more often, Thread Calculator or Machining Assistant?

Thread Calculator ships an update every 18 months, and Machining Assistant every 5 weeks. Most recently, Thread Calculator was updated on September 27, 2026 and Machining Assistant on October 8, 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.*