# Birdathon vs Mormark

The clearest difference is in-app purchases: Mormark at none against Birdathon's 4. Mormark also leads on iOS requirement (11.0 vs 16.1). Birdathon's advantage is update cadence (every 4 months vs every 41 months). On price, ads and device support there is nothing between them.

Both are free to download. Birdathon sells 4 one-off in-app purchases. Mormark asks for nothing beyond the download.

Birdathon ships an update every 4 months, Mormark every 41 months. The most recent releases landed on October 7, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | Birdathon | Mormark |
| --- | --- | --- |
| Price | Free | 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 | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 41 months |
| Monetization | Free | — |
| Size | 192 MB | 50 MB |
| Requires iOS | 16.1 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Barry Langdon-Lassagne](https://appshunter.io/developer/730758814) | [NCX Inc](https://appshunter.io/developer/1129291276) |

## 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 |


### Mormark

[App page](https://appshunter.io/ios/app/mormark/id1410779854)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Birdathon free?

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

### Is Mormark free?

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

### Do Birdathon or Mormark have ads?

Neither Birdathon nor Mormark shows ads.

### Which is updated more often, Birdathon or Mormark?

Birdathon ships an update every 4 months, and Mormark every 41 months. Most recently, Birdathon was updated on October 7, 2026 and Mormark on May 16, 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.*