# AVR Tutorial vs DDP Ⅴision

The clearest difference is in-app purchases: DDP Ⅴision at none against AVR Tutorial's 10. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AVR Tutorial sells 10 one-off in-app purchases. DDP Ⅴision asks for nothing beyond the download.

## The numbers

| Metric | AVR Tutorial | DDP Ⅴision |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/avr-tutorial/id1070496499/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 49 MB |
| Requires iOS | 9.0 | 9.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [红奎 刘](https://appshunter.io/developer/1465054112) |

## What reviewers say

### AVR Tutorial

[App page](https://appshunter.io/ios/app/avr-tutorial/id1070496499)

This app simplifies learning AVR microcontrollers with a code wizard that generates C source code for various peripherals. It offers demo projects and an architecture review, making complex MCU programming more accessible for hobbyists and students.

**Highlights:** AVR architecture review, AVR assembly and C language, 21 demo projects, Code wizard for peripherals, Portability to other ATMEGA MCUs, I2C and SPI EEPROM support (PRO)

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock PRO feature | $1.99 | one-time |
| SPI OLED | $1.99 | one-time |
| I2C OLED | $1.99 | one-time |
| Wifi home automation | $1.99 | one-time |
| 2.2" TFT | $1.99 | one-time |
| LoRa home automation | $1.99 | one-time |
| Home automation using Siri | $2.99 | one-time |
| Home automation using Google | $2.99 | one-time |
| BT home automation | $4.99 | one-time |
| BLE home automation | $4.99 | one-time |


### DDP Ⅴision

[App page](https://appshunter.io/ios/app/ddp-ision/id1547359892)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AVR Tutorial free?

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

### Is DDP Ⅴision free?

DDP Ⅴision is free to download, with no in-app purchases.

### Do AVR Tutorial or DDP Ⅴision have ads?

Neither AVR Tutorial nor DDP Ⅴision 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.*