# Stereonet Mobile vs Birdathon

The clearest difference is review sentiment: Birdathon at 100% against Stereonet Mobile's 73%. Birdathon also leads on rating (4.8 vs 4.5). Stereonet Mobile's advantage is update cadence (monthly vs every 4 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Birdathon holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 13 and 16 respectively. Written reviews point the same way: 73% of Stereonet Mobile's written reviews are positive against 100% of Birdathon's.

Stereonet Mobile ships an update monthly, Birdathon every 4 months. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Stereonet Mobile | Birdathon |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (13 ratings)](https://appshunter.io/ios/app/stereonet-mobile/id1194772610/reviews) | **[4.8 (16 ratings)](https://appshunter.io/ios/app/birdathon/id1211977440/reviews)** |
| Number of ratings | 13 | **16** |
| Positive reviews | 72.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free | Free |
| Size | 29 MB | 192 MB |
| Requires iOS | **15.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Richard Allmendinger](https://appshunter.io/developer/1194772609) | [Barry Langdon-Lassagne](https://appshunter.io/developer/730758814) |

## What reviewers say

### Stereonet Mobile

[App page](https://appshunter.io/ios/app/stereonet-mobile/id1194772610)

This app assists geologists in collecting, visualizing, and analyzing geological orientation data. It offers automatic data entry using device sensors and augmented reality, manual input options, and various plotting and calculation tools for geological features.

**Highlights:** Automatic data entry via device orientation, Augmented reality for strike and dip measurement, Manual data entry via stereonet or text fields, Plotting of lines and planes with user-defined types, Basic geological calculations (rotations, angles, slope stability), Plotting of mean vectors, rose diagrams, and contour lines, View plots from any orientation

**Features:** macOS Compatibility

**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:** none


## Frequently asked questions

### Is Stereonet Mobile free?

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

### Is Birdathon free?

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

### Which has better reviews, Stereonet Mobile or Birdathon?

Birdathon is rated higher. Stereonet Mobile averages 4.5 out of 5 from 13 ratings, while Birdathon averages 4.8 from 16 ratings.

### Do Stereonet Mobile or Birdathon have ads?

Neither Stereonet Mobile nor Birdathon shows ads.

### Which is updated more often, Stereonet Mobile or Birdathon?

Stereonet Mobile ships an update monthly, and Birdathon every 4 months. Most recently, Stereonet Mobile was updated on November 2, 2026 and Birdathon on November 6, 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.*