# AVR Tutorial vs Secure Zip & Unzip

The clearest difference is price: AVR Tutorial at Free against Secure Zip & Unzip's $9.99. AVR Tutorial also leads on iOS requirement (9.0 vs 26.0). Secure Zip & Unzip's advantage is in-app purchases (none vs 10). On ads and device support there is nothing between them.

AVR Tutorial is free to download; Secure Zip & Unzip costs $9.99 up front. AVR Tutorial sells 10 one-off in-app purchases. Secure Zip & Unzip asks for nothing beyond the download.

## The numbers

| Metric | AVR Tutorial | Secure Zip & Unzip |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| 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 | 6 MB |
| Requires iOS | **9.0** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [ALPER KAPLAN](https://appshunter.io/developer/1801852243) |

## 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 |


### Secure Zip & Unzip

[App page](https://appshunter.io/ios/app/secure-zip-and-unzip/id6743336321)

**In-app purchases:** none


## Frequently asked questions

### Is AVR Tutorial free?

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

### Is Secure Zip & Unzip free?

Secure Zip & Unzip costs $9.99, with no in-app purchases.

### Do AVR Tutorial or Secure Zip & Unzip have ads?

Neither AVR Tutorial nor Secure Zip & Unzip 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.*