# Birdathon vs Time Duration Calculator

The clearest difference is review sentiment: Birdathon at 100% against Time Duration Calculator's 33%. Birdathon also leads on ratings volume (15 vs 1). Time Duration Calculator's advantage is rating (5.0 vs 4.7) and iOS requirement (8.0 vs 16.1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Time Duration Calculator 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. Written reviews complicate that: 100% of Birdathon's written reviews are positive against 33% of Time Duration Calculator's, so the app with the better star average is not the one people write more warmly about.

## The numbers

| Metric | Birdathon | Time Duration Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (15 ratings)](https://appshunter.io/ios/app/birdathon/id1211977440/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/time-duration-calculator/id1339023361/reviews)** |
| Number of ratings | **15** | 1 |
| Positive reviews | **100.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Free | Free |
| Size | 192 MB | 6 MB |
| Requires iOS | 16.1 | **8.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Barry Langdon-Lassagne](https://appshunter.io/developer/730758814) | [俊华 罗](https://appshunter.io/developer/1339023360) |

## 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:** none


### Time Duration Calculator

[App page](https://appshunter.io/ios/app/time-duration-calculator/id1339023361)

Calculate the exact time elapsed between two points in time. It can determine the duration in years, months, days, hours, minutes, and seconds. Useful for finding your age in days or the day of the week you were born.

**Highlights:** Calculate duration in years, months, days, hours, minutes, seconds, Find age in days, Determine birth weekday, Supports iPhone, iPad, iPod

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

**In-app purchases:** none


## Frequently asked questions

### Is Birdathon free?

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

### Is Time Duration Calculator free?

Time Duration Calculator is free to download, with no in-app purchases.

### Which has better reviews, Birdathon or Time Duration Calculator?

Time Duration Calculator is rated higher. Birdathon averages 4.7 out of 5 from 15 ratings, while Time Duration Calculator averages 5.0 from 1 ratings.

### Do Birdathon or Time Duration Calculator have ads?

Neither Birdathon nor Time Duration Calculator shows ads.

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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.*