# AVR Tutorial Pro vs Birdathon

The clearest difference is price: Birdathon at Free against AVR Tutorial Pro's $1.99. AVR Tutorial Pro's advantage is iOS requirement (9.0 vs 16.1). On update cadence, ads, in-app purchases and device support there is nothing between them.

Birdathon is free to download; AVR Tutorial Pro costs $1.99 up front. AVR Tutorial Pro sells 10 one-off in-app purchases and Birdathon sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on August 22, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | AVR Tutorial Pro | Birdathon |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.7 (15 ratings)](https://appshunter.io/ios/app/birdathon/id1211977440/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | — | Free |
| Size | 33 MB | 192 MB |
| Requires iOS | **9.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [Barry Langdon-Lassagne](https://appshunter.io/developer/730758814) |

## What reviewers say

### AVR Tutorial Pro

[App page](https://appshunter.io/ios/app/avr-tutorial-pro/id1066643368)

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SPI OLED | $1.99 | one-time |
| Wifi home automation | $1.99 | one-time |
| I2C OLED | $1.99 | one-time |
| 2.2" TFT | $1.99 | one-time |
| Lora home automation | $1.99 | one-time |
| gps project | $2.99 | 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 |


### Birdathon

[App page](https://appshunter.io/ios/app/birdathon/id1211977440)

This app helps birdwatchers create and organize detailed checklists of their observations. It automatically records time and location, allowing for easy editing and customization. Users can visualize their sightings on maps, add field notes, and export data for sharing or further analysis.

**Highlights:** Observation-centric checklists, Automatic time and location recording, Customizable maps with boundary overlays, Field notes for additional observations, Multiple checklist sorting options, Data export to CSV and other formats, Create checklist templates

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Good Tip | $0.99 | one-time |
| Great Tip | $1.99 | one-time |
| Amazing Tip | $2.99 | one-time |
| Incredible Tip | $4.99 | one-time |


## Frequently asked questions

### Is AVR Tutorial Pro free?

AVR Tutorial Pro costs $1.99, and also offers in-app purchases.

### Is Birdathon free?

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

### Do AVR Tutorial Pro or Birdathon have ads?

Neither AVR Tutorial Pro nor Birdathon shows ads.

### Which is updated more often, AVR Tutorial Pro or Birdathon?

AVR Tutorial Pro ships an update every 4 months, and Birdathon every 4 months. Most recently, AVR Tutorial Pro was updated on August 22, 2026 and Birdathon on September 19, 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.*