# Big Butterfly Count vs ObsIdentify

The clearest difference is rating: Big Butterfly Count at 4.8 against ObsIdentify's 2.0. Big Butterfly Count also leads on review sentiment (77% vs 58%). ObsIdentify's advantage is monetization model (free vs ad-supported). On price, ratings volume, update cadence and ads there is nothing between them.

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

Big Butterfly Count holds the better App Store score, 4.8 against 2.0. Both are backed by a comparable volume of ratings — 12 and 5 respectively. Written reviews point the same way: 77% of Big Butterfly Count's written reviews are positive against 58% of ObsIdentify's.

Big Butterfly Count ships an update monthly, ObsIdentify every 3 weeks. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Big Butterfly Count | ObsIdentify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (12 ratings)](https://appshunter.io/ios/app/big-butterfly-count/id658158833/reviews)** | [2.0 (5 ratings)](https://appshunter.io/ios/app/obsidentify/id1464543488/reviews) |
| Number of ratings | **12** | 5 |
| Positive reviews | **77.1% of reviews** | 58.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 41 MB | 45 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Butterfly Conservation Trading Ltd](https://appshunter.io/developer/658158836) | [Observation International](https://appshunter.io/developer/1464543487) |

## What reviewers say

### Big Butterfly Count

[App page](https://appshunter.io/ios/app/big-butterfly-count/id658158833)

Participate in a national butterfly and moth survey by identifying and counting species in your local environment. Your observations contribute to understanding the health of UK wildlife. Features an identification guide and a map to view submitted sightings.

**Highlights:** Butterfly and moth identification guide, Count and submit sightings, View submitted records on a map, Contribute to wildlife research, 15-minute nature observation

**Features:** Vision Pro support

**In-app purchases:** none


### ObsIdentify

[App page](https://appshunter.io/ios/app/obsidentify/id1464543488)

Instantly identify plants, animals, and mushrooms from photos taken in Europe or the Dutch Caribbean. Track your discoveries, earn rewards, and contribute to scientific research by sharing your observations.

**Highlights:** One-click species recognition, Collect wildlife observations, Tips for finding new species, Earn badges and join challenges, Create and share observations with groups, Contribute to biological research

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

**In-app purchases:** none


## Frequently asked questions

### Is Big Butterfly Count free?

Big Butterfly Count is free to download, with no in-app purchases.

### Is ObsIdentify free?

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

### Which has better reviews, Big Butterfly Count or ObsIdentify?

Big Butterfly Count is rated higher. Big Butterfly Count averages 4.8 out of 5 from 12 ratings, while ObsIdentify averages 2.0 from 5 ratings.

### Do Big Butterfly Count or ObsIdentify have ads?

Neither Big Butterfly Count nor ObsIdentify shows ads.

### Which is updated more often, Big Butterfly Count or ObsIdentify?

Big Butterfly Count ships an update monthly, and ObsIdentify every 3 weeks. Most recently, Big Butterfly Count was updated on October 17, 2026 and ObsIdentify on October 18, 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.*