# BirdTrack vs e

The clearest difference is review sentiment: e at 100% against BirdTrack's 44%. On price, update cadence, 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.

BirdTrack ships an update every 2 months, e every 3 months. The most recent releases landed on September 22, 2026 and August 13, 2026 respectively.

## The numbers

| Metric | BirdTrack | e |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/birdtrack/id596839218/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 44.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 101 MB | 53 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BTO](https://appshunter.io/developer/447347144) | [Centre for Ecology and Hydrology](https://appshunter.io/developer/986306797) |

## What reviewers say

### BirdTrack

[App page](https://appshunter.io/ios/app/birdtrack/id596839218)

Easily record bird sightings and other wildlife observations from your mobile device. Track your lists, explore local birdwatching spots, and contribute to vital research and conservation efforts. Your data syncs seamlessly with your online account.

**Highlights:** Record bird and wildlife sightings, Offline mapping and recording, Illustrated species checklist, Track year and life lists, View community sightings map, Contribute to research and conservation

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

**In-app purchases:** none


### e

[App page](https://appshunter.io/ios/app/e-surveyor/id1539907283)

Assess the quality of your farm's wildflower habitat using image recognition and a comprehensive plant database. Generate reports on habitat quality based on identified plants and seed mixes.

**Highlights:** Image recognition of plants, Rich plant and seed mix data, Habitat quality reporting, Farm habitat assessment, Wildflower identification

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BirdTrack free?

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

### Is e free?

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

### Do BirdTrack or e have ads?

Neither BirdTrack nor e shows ads.

### Which is updated more often, BirdTrack or e?

BirdTrack ships an update every 2 months, and e every 3 months. Most recently, BirdTrack was updated on September 22, 2026 and e on August 13, 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.*