# Turning Calculator Pro vs Thread Chart

The clearest difference is iOS requirement: Turning Calculator Pro at 13.0 against Thread Chart's 15.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Turning Calculator Pro sells 1 one-off in-app purchase and Thread Chart sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Turning Calculator Pro | Thread Chart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/turning-calculator-pro/id6767200756/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Monetization | Free with in-app purchases | — |
| Size | 75 MB | 50 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shraddhaben Parmar](https://appshunter.io/developer/1889769325) | [Sachinbhai Surani](https://appshunter.io/developer/1838685550) |

## What reviewers say

### Turning Calculator Pro

[App page](https://appshunter.io/ios/app/turning-calculator-pro/id6767200756)

This application assists machinists, CNC operators, and engineers with precise turning calculations. It simplifies the process of determining speed, feed, and cutting parameters for lathe and CNC machines, optimizing machining performance and reducing setup time.

**Highlights:** RPM calculator, Feed rate calculation, Cutting speed calculation, Metric and imperial unit support, Quick input with instant results, Designed for real-world machining

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $12.99 | one-time |


### Thread Chart

[App page](https://appshunter.io/ios/app/thread-chart-tap-drill-and-cnc/id6799089886)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $14.99 | one-time |


## Frequently asked questions

### Is Turning Calculator Pro free?

Turning Calculator Pro is free to download, with in-app purchases available.

### Is Thread Chart free?

Thread Chart is free to download, with in-app purchases available.

### Do Turning Calculator Pro or Thread Chart have ads?

Neither Turning Calculator Pro nor Thread Chart shows ads.

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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.*