# Birdathon vs Microscope Resolution

The clearest difference is price: Birdathon at Free against Microscope Resolution's $1.99. Birdathon also leads on rating (4.7 vs 3.7) and ads (none vs shown). Microscope Resolution's advantage is in-app purchases (none vs 4) and iOS requirement (13.0 vs 16.1). On review sentiment, ratings volume, update cadence and device support there is nothing between them.

Birdathon is free to download; Microscope Resolution costs $1.99 up front. Birdathon sells 4 one-off in-app purchases. Microscope Resolution asks for nothing beyond the download.

Birdathon holds the better App Store score, 4.7 against 3.7. Both are backed by a comparable volume of ratings — 15 and 6 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Birdathon ships an update every 4 months, Microscope Resolution every 3 months. The most recent releases landed on October 7, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Birdathon | Microscope Resolution |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.7 (15 ratings)](https://appshunter.io/ios/app/birdathon/id1211977440/reviews)** | [3.7 (6 ratings)](https://appshunter.io/ios/app/microscope-resolution/id1229786939/reviews) |
| Number of ratings | **15** | 6 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | **Free** | Paid |
| Size | 192 MB | 5 MB |
| Requires iOS | 16.1 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Barry Langdon-Lassagne](https://appshunter.io/developer/730758814) | [Andrew Barlow](https://appshunter.io/developer/1229786938) |

## 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 |


### Microscope Resolution

[App page](https://appshunter.io/ios/app/microscope-resolution/id1229786939)

Calculate microscope objective lens resolution and brightness. Match lenses to your imaging system and check sampling frequency. Save, share, and access calculation equations.

**Highlights:** Calculate lateral and axial resolution, Calculate objective brightness, Match objective to acquisition system, Check Nyquist sampling frequency, Save and restore objective data, Share objective data, Display calculation equations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Birdathon free?

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

### Is Microscope Resolution free?

Microscope Resolution costs $1.99, with no in-app purchases.

### Which has better reviews, Birdathon or Microscope Resolution?

Birdathon is rated higher. Birdathon averages 4.7 out of 5 from 15 ratings, while Microscope Resolution averages 3.7 from 6 ratings.

### Do Birdathon or Microscope Resolution have ads?

Microscope Resolution shows ads; Birdathon does not.

### Which is updated more often, Birdathon or Microscope Resolution?

Birdathon ships an update every 4 months, and Microscope Resolution every 3 months. Most recently, Birdathon was updated on October 7, 2026 and Microscope Resolution on October 21, 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.*