# CTE Calculator vs Screw Flight Calculator

The clearest difference is price: CTE Calculator at Free against Screw Flight Calculator's $1.99. CTE Calculator also leads on rating (5.0 vs 1.0). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

CTE Calculator is free to download; Screw Flight Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CTE Calculator holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

CTE Calculator ships an update every 15 months, Screw Flight Calculator every 17 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | CTE Calculator | Screw Flight Calculator |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cte-calculator/id1535102492/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/screw-flight-calculator/id1664794765/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 15 months** | Every 17 months |
| Monetization | **Free** | Paid |
| Size | 24 MB | 44 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) | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) |

## 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


### Screw Flight Calculator

[App page](https://appshunter.io/ios/app/screw-flight-calculator/id1664794765)

Calculate the flat pattern size for cutting blank plates for screw flight development and fabrication. This tool is essential for creating screw conveyors, ribbon blenders, and other process equipment.

**Highlights:** Calculate flat pattern size, Input outside & inside diameter, Input pitch and material thickness, Calculate weight of material, Includes radial cut element

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

**In-app purchases:** none


## Frequently asked questions

### Is CTE Calculator free?

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

### Is Screw Flight Calculator free?

Screw Flight Calculator costs $1.99, with no in-app purchases.

### Which has better reviews, CTE Calculator or Screw Flight Calculator?

CTE Calculator is rated higher. CTE Calculator averages 5.0 out of 5 from 1 ratings, while Screw Flight Calculator averages 1.0 from 1 ratings.

### Do CTE Calculator or Screw Flight Calculator have ads?

Neither CTE Calculator nor Screw Flight Calculator shows ads.

### Which is updated more often, CTE Calculator or Screw Flight Calculator?

CTE Calculator ships an update every 15 months, and Screw Flight Calculator every 17 months. Most recently, CTE Calculator was updated on November 3, 2026 and Screw Flight Calculator on November 3, 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.*