# Birdathon vs Fast Quadratics

The clearest difference is price: Birdathon at Free against Fast Quadratics's $0.99. Birdathon also leads on update cadence (every 4 months vs every 21 months) and ratings volume (15 vs 1). Fast Quadratics's advantage is in-app purchases (none vs 4) and rating (5.0 vs 4.7). On ads, device support and iOS requirement there is nothing between them.

Birdathon is free to download; Fast Quadratics costs $0.99 up front. Birdathon sells 4 one-off in-app purchases. Fast Quadratics asks for nothing beyond the download.

Fast Quadratics holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Birdathon has 15 ratings behind it against 1, so its average is the more settled of the two.

Birdathon ships an update every 4 months, Fast Quadratics every 21 months. The most recent releases landed on October 24, 2026 and June 24, 2026 respectively.

## The numbers

| Metric | Birdathon | Fast Quadratics |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.7 (15 ratings)](https://appshunter.io/ios/app/birdathon/id1211977440/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fast-quadratics/id1467774143/reviews)** |
| Number of ratings | **15** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 21 months |
| Monetization | **Free** | Paid |
| Size | 192 MB | 0 MB |
| Requires iOS | 16.1 | 16.1 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Barry Langdon-Lassagne](https://appshunter.io/developer/730758814) | [John Bowman](https://appshunter.io/developer/1467774142) |

## What reviewers say

### 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 |


### Fast Quadratics

[App page](https://appshunter.io/ios/app/fast-quadratics/id1467774143)

Quickly solve quadratic equations, including those with complex numbers. This educational tool offers a straightforward way to find solutions for mathematical problems.

**Highlights:** Solves quadratic equations, Handles complex numbers, Rapid equation solving, Educational utility

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Birdathon free?

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

### Is Fast Quadratics free?

Fast Quadratics costs $0.99, with no in-app purchases.

### Which has better reviews, Birdathon or Fast Quadratics?

Fast Quadratics is rated higher. Birdathon averages 4.7 out of 5 from 15 ratings, while Fast Quadratics averages 5.0 from 1 ratings.

### Do Birdathon or Fast Quadratics have ads?

Neither Birdathon nor Fast Quadratics shows ads.

### Which is updated more often, Birdathon or Fast Quadratics?

Birdathon ships an update every 4 months, and Fast Quadratics every 21 months. Most recently, Birdathon was updated on October 24, 2026 and Fast Quadratics on June 24, 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.*