# AVR Tutorial vs Watt Advisor

The clearest difference is in-app purchases: Watt Advisor at none against AVR Tutorial's 10. Watt Advisor also leads on update cadence (every 6 weeks vs every 3 months). AVR Tutorial's advantage is iOS requirement (9.0 vs 13.4). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for AVR Tutorial against 5.0 for Watt Advisor. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

AVR Tutorial ships an update every 3 months, Watt Advisor every 6 weeks. The most recent releases landed on September 24, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | AVR Tutorial | Watt Advisor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/avr-tutorial/id1070496499/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/watt-advisor/id6608980277/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 33 MB | 34 MB |
| Requires iOS | **9.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [BreakSmart LLC](https://appshunter.io/developer/1761164384) |

## 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 |


### Watt Advisor

[App page](https://appshunter.io/ios/app/watt-advisor/id6608980277)

This app analyzes your energy usage to provide personalized advice on solar installation, energy plans, and home efficiency. It also monitors grid conditions and sends alerts for potential reliability issues. Optimize your energy consumption and save money with smart recommendations.

**Highlights:** Energy usage analysis, Solar calculator, Grid reliability alerts, Energy contract analysis, Home energy efficiency assessment, Smart device optimization

**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 Watt Advisor free?

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

### Which has better reviews, AVR Tutorial or Watt Advisor?

AVR Tutorial and Watt Advisor are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do AVR Tutorial or Watt Advisor have ads?

Neither AVR Tutorial nor Watt Advisor shows ads.

### Which is updated more often, AVR Tutorial or Watt Advisor?

AVR Tutorial ships an update every 3 months, and Watt Advisor every 6 weeks. Most recently, AVR Tutorial was updated on September 24, 2026 and Watt Advisor on June 11, 2026.

---

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