# Thread Calculator vs Electronics Toolkit calc

The clearest difference is price: Thread Calculator at Free against Electronics Toolkit calc's $4.99. Electronics Toolkit calc's advantage is ads (none vs shown) and update cadence (every 4 months vs every 18 months). On in-app purchases and device support there is nothing between them.

Thread Calculator is free to download; Electronics Toolkit calc costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Thread Calculator ships an update every 18 months, Electronics Toolkit calc every 4 months. The most recent releases landed on September 27, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Thread Calculator | Electronics Toolkit calc |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.3 (13 ratings)](https://appshunter.io/ios/app/thread-calculator/id1559560290/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Every 4 months** |
| Monetization | Ad-supported | — |
| Size | 25 MB | 25 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GSR Gustav Stursberg GmbH](https://appshunter.io/developer/1559560292) | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) |

## 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


### Electronics Toolkit calc

[App page](https://appshunter.io/ios/app/electronics-toolkit-calc/id6473828034)

**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 Electronics Toolkit calc free?

Electronics Toolkit calc costs $4.99, with no in-app purchases.

### Do Thread Calculator or Electronics Toolkit calc have ads?

Thread Calculator shows ads; Electronics Toolkit calc does not.

### Which is updated more often, Thread Calculator or Electronics Toolkit calc?

Thread Calculator ships an update every 18 months, and Electronics Toolkit calc every 4 months. Most recently, Thread Calculator was updated on September 27, 2026 and Electronics Toolkit calc on September 13, 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.*