# Thread Calculator vs Aufmaster

The clearest difference is ads: Aufmaster at none against Thread Calculator's shown. Aufmaster also leads on update cadence (every 4 weeks vs every 18 months) and monetization model (free vs ad-supported). Thread Calculator's advantage is device support (3 vs 1) and ratings volume (13 vs 4). On price, rating and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.3 for Thread Calculator against 4.3 for Aufmaster. Both are backed by a comparable volume of ratings — 13 and 4 respectively.

Thread Calculator ships an update every 18 months, Aufmaster every 4 weeks. The most recent releases landed on September 27, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Thread Calculator | Aufmaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (13 ratings)](https://appshunter.io/ios/app/thread-calculator/id1559560290/reviews) | [4.3 (4 ratings)](https://appshunter.io/ios/app/aufmaster/id6743626575/reviews) |
| Number of ratings | **13** | 4 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Every 4 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 25 MB | 69 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GSR Gustav Stursberg GmbH](https://appshunter.io/developer/1559560292) | [Aufmaster](https://appshunter.io/developer/1803611569) |

## 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


### Aufmaster

[App page](https://appshunter.io/ios/app/aufmaster/id6743626575)

Streamline cable measurement and documentation with your iPhone and a digital measuring device. Quickly record lengths, locations, and project details, and manage inventory efficiently, eliminating the need for paper records.

**Highlights:** Digital cable length measurement via iPhone + AM1, Document measurements with time, location, and user, Offline measurements with later sync, Inventory and warehouse management, Cloud account for project and inventory overview

**In-app purchases:** none


## Frequently asked questions

### Is Thread Calculator free?

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

### Is Aufmaster free?

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

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

Thread Calculator and Aufmaster are both rated 4.3 out of 5 on the App Store, from 13 and 4 ratings respectively.

### Do Thread Calculator or Aufmaster have ads?

Thread Calculator shows ads; Aufmaster does not.

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

Thread Calculator ships an update every 18 months, and Aufmaster every 4 weeks. Most recently, Thread Calculator was updated on September 27, 2026 and Aufmaster on October 12, 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.*