Collins British Bird Guide
by NatureGuides Ltd.
- Reference
- Paid
- Rating
- 4.0
- 29 ratings
- Top 62%among 47 Reference apps
- Last update
- Sep 22, 2026
- Version 3.3.1
- Size
- 359 MB
- Category
- Reference
- Tracked since
- Oct 10, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
Collins British Bird Guide takes 264 of the most commonly seen British & Irish bird species from the award-winning Collins Bird Guide and presents them in the same easy-to-use practical format. Search for a species by location, time of year or plumage traits; browse the stunning illustrations by Killian Mullarney and Dan Zetterström; read the authoritative text by Lars Svensson; check distribution against the up-to-date maps taken from Bird Atlas 2007–2011; or listen to any of the hundreds of sound recordings.
Praise for the Collins Bird Guide app:
‘It’s much more convenient than taking a big book with you...the Collins app is fantastic.’
- Chris Packham, Metro
‘The Collins Bird Guide app is destined to become a real triumph, the ultimate in field guide apps — and deservedly so.’
- BirdGuides
Features include:
- Beautiful illustrations by Killian Mullarney and Dan Zetterström
- Detailed text covering habitat, range, identification and voice by Lars Svensson
- Record sightings, location and date with the listing tool
- Powerful search filter
- Intuitive design to quickly and easily swipe through species
- Curated lists of confusable species
- Over 550 carefully selected songs and calls – many by author Lars Svensson
- Select species names from 30+ languages
- Expertly edited video clips for every species in the app (require in-app purchase)
- Weighs nothing!
Identify Assist is our brand-new subscription service. Instantly identify species from photos and recordings with cutting-edge AI.
The latest version of the app requires iOS 17.0 or later.
If you like the app, don’t forget to share the app, rate it and leave a review.
Privacy Policy
natureguides.com/privacy-policy
Terms of Use
apple.com/legal/internet-services/itunes/dev/stdeula/
What’s new
Release notes for the latest version, as written by the developer.
The Bird of the Day widget now works with tinted home screens, full-screen images can be rotated once more and map keys should be fully visible.
Rank history
Daily position in the UK charts. #1 is at the top.
- Best rank
- #2
- Current rank
- #33
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
62/100
Not flagged as small & simple
- Developer size0% · 25
Developer: 14 apps on the charts
- Audience size100% · 20
Ratings: 29
- App size25% · 10
Size: 359 MB
- Price model100% · 15
Price model: paid
- Demand proof80% · 30
Best rank #1, 4 countries
An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2
How the score worksVersion history
- 3.3.1LatestReleased Sep 22, 2026