# Bluestone EV vs Thread Chart

The clearest difference is in-app purchases: Bluestone EV at none against Thread Chart's 1. Bluestone EV also leads on iOS requirement (13.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Thread Chart sells 1 one-off in-app purchase. Bluestone EV asks for nothing beyond the download.

## The numbers

| Metric | Bluestone EV | Thread Chart |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 29 MB | 50 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bluestone Co.,Ltd](https://appshunter.io/developer/1777980300) | [Sachinbhai Surani](https://appshunter.io/developer/1838685550) |

## What reviewers say

### Bluestone EV

[App page](https://appshunter.io/ios/app/bluestone-ev/id6737797812)

**In-app purchases:** none


### 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 Bluestone EV free?

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

### Is Thread Chart free?

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

### Do Bluestone EV or Thread Chart have ads?

Neither Bluestone EV 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.*