# Respiratory System vs SolveSpace Tutor

The clearest difference is in-app purchases: Respiratory System at none against SolveSpace Tutor's 4. Respiratory System also leads on iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. SolveSpace Tutor sells 4 in-app purchases, starting at $9.99 per month. Respiratory System asks for nothing beyond the download.

## The numbers

| Metric | Respiratory System | SolveSpace Tutor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 63 MB | 4 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GPS FOR PRINTING, PUBLISHING AND DISTRIBUTION SAE](https://appshunter.io/developer/1679738219) | [Karim Owda](https://appshunter.io/developer/6792839673) |

## What reviewers say

### Respiratory System

[App page](https://appshunter.io/ios/app/respiratory-system-gps/id6474309532)

**Features:** macOS Compatibility

**In-app purchases:** none


### SolveSpace Tutor

[App page](https://appshunter.io/ios/app/solvespace-tutor/id6792839671)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SolveSpace Study Monthly | $9.99 | per month |
| SolveSpace Pro Monthly | $34.99 | per month |
| SolveSpace Study Annual | $79.99 | per year |
| SolveSpace Pro Annual | $299.99 | per year |


## Frequently asked questions

### Is Respiratory System free?

Respiratory System is free to download, with no in-app purchases.

### Is SolveSpace Tutor free?

SolveSpace Tutor is free to download, with in-app purchases available.

### Do Respiratory System or SolveSpace Tutor have ads?

Neither Respiratory System nor SolveSpace Tutor 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.*