# mastering embedded system vs AVR Projects

The clearest difference is in-app purchases: mastering embedded system at none against AVR Projects's 10. mastering embedded 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. AVR Projects sells 10 one-off in-app purchases. mastering embedded system asks for nothing beyond the download.

## The numbers

| Metric | mastering embedded system | AVR Projects |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Daily |
| Size | 20 MB | 20 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Marina Nabil](https://appshunter.io/developer/1720343772) | [Zaw Win Myat](https://appshunter.io/developer/1800881321) |

## What reviewers say

### mastering embedded system

[App page](https://appshunter.io/ios/app/mastering-embedded-system/id6476138855)

**Features:** macOS Compatibility

**In-app purchases:** none


### AVR Projects

[App page](https://appshunter.io/ios/app/avr-projects/id6745124011)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| R2R Ladder DAC | $0.99 | one-time |
| Sawtooth Waveform | $0.99 | one-time |
| Triangular Waveform | $0.99 | one-time |
| Sine Waveform | $0.99 | one-time |
| Ammeter AVR | $0.99 | one-time |
| 4x3 Matrix Keypad | $0.99 | one-time |
| Ohm Meter AVR | $0.99 | one-time |
| Voltmeter AVR | $0.99 | one-time |
| TM1637 Interfacing with AVR | $0.99 | one-time |
| Graphic LCD Interfacing | $0.99 | one-time |


## Frequently asked questions

### Is mastering embedded system free?

mastering embedded system is free to download, with no in-app purchases.

### Is AVR Projects free?

AVR Projects is free to download, with in-app purchases available.

### Do mastering embedded system or AVR Projects have ads?

Neither mastering embedded system nor AVR Projects shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*