# AVR Tutorial vs Resistor

The clearest difference is in-app purchases: Resistor at none against AVR Tutorial's 10. Resistor also leads on ratings volume (17 vs 2). AVR Tutorial's advantage is update cadence (every 3 months vs every 9 months) and iOS requirement (9.0 vs 26.0). On price, rating, ads and device support there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for AVR Tutorial against 4.9 for Resistor. That said, the two scores are not equally well evidenced: Resistor has 17 ratings behind it against 2, so its average is the more settled of the two.

AVR Tutorial ships an update every 3 months, Resistor every 9 months. The most recent releases landed on October 5, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | AVR Tutorial | Resistor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/avr-tutorial/id1070496499/reviews)** | [4.9 (17 ratings)](https://appshunter.io/ios/app/resistor-converter/id6446839759/reviews) |
| Number of ratings | 2 | **17** |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 33 MB | 8 MB |
| Requires iOS | **9.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [Gerhard Lentschik](https://appshunter.io/developer/629988041) |

## 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 |


### Resistor

[App page](https://appshunter.io/ios/app/resistor-converter/id6446839759)

Quickly calculate resistor values from color bands or SMD codes, and vice versa. This tool is ideal for electronics enthusiasts, students, and DIYers working with 4, 5, or 6-band resistors and various SMD codes. It functions offline and requires no registration.

**Highlights:** Calculate resistor values from color bands, Convert resistor values to color bands, Supports 4, 5, and 6-band resistors, Handles SMD codes (EIA-3, EIA-4, EIA-96), Works offline, No registration required

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

**In-app purchases:** none


## Frequently asked questions

### Is AVR Tutorial free?

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

### Is Resistor free?

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

### Which has better reviews, AVR Tutorial or Resistor?

AVR Tutorial is rated higher. AVR Tutorial averages 5.0 out of 5 from 2 ratings, while Resistor averages 4.9 from 17 ratings.

### Do AVR Tutorial or Resistor have ads?

Neither AVR Tutorial nor Resistor shows ads.

### Which is updated more often, AVR Tutorial or Resistor?

AVR Tutorial ships an update every 3 months, and Resistor every 9 months. Most recently, AVR Tutorial was updated on October 5, 2026 and Resistor on September 27, 2026.

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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.*