# N4 vs Birdathon

The clearest difference is review sentiment: Birdathon at 100% against N4's 0%. Birdathon also leads on price (Free vs $9.99) and iOS requirement (16.1 vs 26.0). N4's advantage is in-app purchases (none vs 4). On update cadence, ads and device support there is nothing between them.

Birdathon is free to download; N4 costs $9.99 up front. Birdathon sells 4 one-off in-app purchases. N4 asks for nothing beyond the download.

N4 ships an update every 6 months, Birdathon every 4 months. The most recent releases landed on September 20, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | N4 | Birdathon |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | — | **[4.7 (15 ratings)](https://appshunter.io/ios/app/birdathon/id1211977440/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Paid | **Free** |
| Size | 19 MB | 192 MB |
| Requires iOS | 26.0 | **16.1** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yamase & Touwa Japanese Insititute](https://appshunter.io/developer/442115304) | [Barry Langdon-Lassagne](https://appshunter.io/developer/730758814) |

## What reviewers say

### N4

[App page](https://appshunter.io/ios/app/n4/id495496641)

Master JLPT N4 grammar with this app. It organizes sentence patterns with clear explanations in Chinese and provides practice questions. Easily mark difficult words for review to improve your exam performance.

**Highlights:** JLPT N4 grammar organization, Detailed sentence pattern explanations, Chinese language explanations, Word marking for review, Over 300 practice questions

**Features:** Vision Pro support

**In-app purchases:** none


### 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 N4 free?

N4 costs $9.99, with no in-app purchases.

### Is Birdathon free?

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

### Do N4 or Birdathon have ads?

Neither N4 nor Birdathon shows ads.

### Which is updated more often, N4 or Birdathon?

N4 ships an update every 6 months, and Birdathon every 4 months. Most recently, N4 was updated on September 20, 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.*