# CTE Calculator vs Mechanical Toolkit

The clearest difference is in-app purchases: CTE Calculator at none against Mechanical Toolkit's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Mechanical Toolkit sells 1 one-off in-app purchase. CTE Calculator asks for nothing beyond the download.

CTE Calculator ships an update every 15 months, Mechanical Toolkit every 20 months. The most recent releases landed on October 6, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | CTE Calculator | Mechanical Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cte-calculator/id1535102492/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 15 months** | Every 20 months |
| Monetization | Free | — |
| Size | 24 MB | 49 MB |
| Requires iOS | 13.4 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Verisurf](https://appshunter.io/developer/468050982) | [Shital Gorasiya](https://appshunter.io/developer/1737199158) |

## What reviewers say

### CTE Calculator

[App page](https://appshunter.io/ios/app/cte-calculator/id1535102492)

This utility app helps determine the change in length of common manufacturing materials caused by temperature fluctuations. It provides quick calculations for various materials, making it a handy tool for engineers and manufacturers on the go.

**Highlights:** Temperature effect calculations, Change in length determination, Common manufacturing materials, Portable utility, iOS compatible

**Features:** macOS Compatibility

**In-app purchases:** none


### Mechanical Toolkit

[App page](https://appshunter.io/ios/app/mechanical-toolkit/id6480299808)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Purchase | $4.99 | one-time |


## Frequently asked questions

### Is CTE Calculator free?

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

### Is Mechanical Toolkit free?

Mechanical Toolkit is free to download, with in-app purchases available.

### Do CTE Calculator or Mechanical Toolkit have ads?

Neither CTE Calculator nor Mechanical Toolkit shows ads.

### Which is updated more often, CTE Calculator or Mechanical Toolkit?

CTE Calculator ships an update every 15 months, and Mechanical Toolkit every 20 months. Most recently, CTE Calculator was updated on October 6, 2026 and Mechanical Toolkit on October 2, 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.*