# BTO Ringing & NRS Info vs BWP

The clearest difference is price: BTO Ringing & NRS Info at Free against BWP's $35.99. BTO Ringing & NRS Info also leads on review sentiment (100% vs 64%) and iOS requirement (13.4 vs 15.5). BWP's advantage is update cadence (every 2 months vs every 7 months). On ads, in-app purchases and device support there is nothing between them.

BTO Ringing & NRS Info is free to download; BWP costs $35.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BTO Ringing & NRS Info ships an update every 7 months, BWP every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | BTO Ringing & NRS Info | BWP |
| --- | --- | --- |
| Price | **Free** | $35.99 |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/bwp/id1451326170/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **100.0% of reviews** | 64.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | **Free** | Paid |
| Size | 21 MB | 3.3 GB |
| Requires iOS | **13.4** | 15.5 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [BTO](https://appshunter.io/developer/447347144) | [NatureGuides Ltd.](https://appshunter.io/developer/310574314) |

## What reviewers say

### BTO Ringing & NRS Info

[App page](https://appshunter.io/ios/app/bto-ringing-and-nrs-info/id466711615)

This app assists bird ringers, nest recorders, and scientists in identifying correct ring sizes and codes for UK bird species. It also provides codes for recording nests, biometrics, condition, status, and habitat information.

**Highlights:** UK bird ring size and code lookup, Nest recording code information, Biometric and condition recording codes, Standard habitat codes, Information for full-grown birds and pulli

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

**In-app purchases:** none


### BWP

[App page](https://appshunter.io/ios/app/bwp/id1451326170)

This comprehensive reference app provides detailed information on birds of the Western Palearctic. It features extensive data on species, including field characters, habitat, breeding, and behavior, enhanced with illustrations, songs, videos, and maps.

**Highlights:** 1,056 species covered, 5,473 illustrations, 1,066 songs and calls, 916 videos, 643 distribution maps, Updated taxonomy and new species

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BTO Ringing & NRS Info free?

BTO Ringing & NRS Info is free to download, with no in-app purchases.

### Is BWP free?

BWP costs $35.99, with no in-app purchases.

### Do BTO Ringing & NRS Info or BWP have ads?

Neither BTO Ringing & NRS Info nor BWP shows ads.

### Which is updated more often, BTO Ringing & NRS Info or BWP?

BTO Ringing & NRS Info ships an update every 7 months, and BWP every 2 months. Most recently, BTO Ringing & NRS Info was updated on November 1, 2026 and BWP 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.*