Sibley Birds 2nd Edition
by mydigitalearth.com
- Reference
- Paid
- Zombie
- Rating
- 4.9
- 2.9K ratings · US storefront
- Top 52%among 161 Reference apps
- Last update
- Mar 26, 2025
- Version 1.5
- Size
- 808 MB
- Category
- Reference
- Tracked since
- Oct 9, 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.
The new Sibley Birds app has arrived with comprehensive, up to date information of over 930 North American species. Go birdwatching and discover the birds of USA and Canada.
All the detailed artwork from David Sibley’s Guide to Birds Second Edition is included as well as thorough descriptions and distribution maps. Benefit from regular plate updates from the author and new bird calls.
This leading bird app is user-friendly and easy to navigate, regardless of whether you are a novice or experienced birdwatcher. Identify birds easily! Using our Smart Search filters and My Location setting you'll find that bird you're looking for in no time!
Features include:
- A new easy to navigate menu system on iPhone.
- A new grid view with larger thumbnails.
- Display species names in English, French, Spanish and Latin (Scientific).
- Search on banding code to quickly find a species.
- Over 2700 calls/songs covering most species.
- Compare 2 species side by side.
- Apply a location (US State or Canadian Province) to narrow down the list of birds.
- When a location has been selected, a status icon will appear next to each species in that location indicating whether it is Common, Uncommon, Scarce, Rare or Vagrant.
- Detailed information in the species description including location status by month.
- A similar species feature which shows all related birds.
- A vastly improved Smart Search with refined search criteria: Status and by month (when a location is selected), Bird habits, Bird Type, Bird Size, Body Shape, Color and Pattern.
- Keep a personal list (My List) of species seen and backup to iCloud/other cloud service.
- Build a custom sharable (as csv) and searchable (in Smart Search) species list using the new My Tags feature.
- Sort My List taxonomically.
If you have any queries or comments on the app we are always happy to hear from you at [email protected]
What’s new
Release notes for the latest version, as written by the developer.
Updated app data in line with the latest bird data available.
Fixed some bugs.
Rank history
Daily position in the Canada charts. #1 is at the top.
- Best rank
- #5
- Current rank
- #6
- 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.
55/100
Not flagged as small & simple
- Developer size0% · 25
Developer: 40 apps on the charts
- Audience size50% · 20
Ratings: 2,884
- App size0% · 10
Size: 808 MB
- Price model100% · 15
Price model: paid
- Demand proof100% · 30
Best rank #4, 15 countries
An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2
How the score worksVersion history
- 1.5LatestReleased Mar 26, 2025