Merlin Bird ID alternatives
Merlin Bird ID alternatives — what to put next to it, not instead of it
Merlin is the strongest argument in this whole category that a free app can beat every paid one. It is a Cornell Lab of Ornithology project, it has 112,000 ratings at 4.9 stars, and it identifies birds three ways: five questions about what you saw, a photograph, or Sound ID listening live and naming every species singing around you at once. Nothing here replaces that. What follows is what to add.
Do not replace Merlin. It is published by the Cornell Lab of Ornithology, it lists no in-app purchases at all, it rates 4.9 from 112,000 reviews, and its live Sound ID is a capability no paid app on this page matches. The only real gap is that it does birds and nothing else — so the useful question is what to carry beside it.
What Merlin Bird ID charges
Merlin Bird ID lists no in-app purchases at all. On the App Store listing read on 2026-09-03 there is nothing to buy inside it — no subscription, no unlock, no consumable. That is unusual in this field and it is the reason it appears so often below.
The 5 alternatives, ranked
- eBird The one Merlin expects you to have Free — no in-app purchases · 3.9★ from 809
eBird is Merlin's sibling from the same Cornell Lab, also free with no in-app purchases, and it does the job Merlin deliberately does not: recording what you saw. Submit checklists and they feed one of the largest biodiversity datasets in existence, and in return you get to see what is being reported at any hotspot near you right now — which is how you find the bird before you identify it.
Against it: It identifies nothing. If you install it expecting a scanner you will be baffled; the two apps are designed as a pair and Merlin is the identifying half.
- Audubon Bird Guide The field guide with depth Free — no in-app purchases · 4.3★ from 4,518
Merlin gives you a name and a short account. The Audubon Bird Guide gives you the full species treatment — behaviour, habitat, nesting, migration, conservation status, range maps — written by the National Audubon Society. Also free with no in-app purchases. It is the reference you open after Merlin has told you what it was.
Against it: No photo identification and no sound identification: you do the identifying by working through a filter. As a scanner it is not competing with Merlin at all.
- Seek For everything that is not a bird Free — no in-app purchases · 4.8★ from 30,894
Free, no in-app purchases, and it identifies anything alive: the plant the bird was in, the insect it was eating, the mammal that ran across the path. It runs entirely on the device with no signal needed, which pairs well with Merlin's offline bird packs for a phone that works in a valley.
Against it: Shallow on birds specifically compared with Merlin, and it will refuse to answer rather than guess when it is unsure.
- Picture Bird The paid alternative, for completeness In-app purchases $3.99–$39.99 · 4.7★ from 40,029
Picture Bird does photo and sound identification in a tidy single-purpose interface, and some people prefer its presentation. Listing it is a fairness exercise: it exists, it works, and it has 40,000 ratings at 4.7 stars.
Against it: It carries 3 in-app purchase tiers from $3.99 to $39.99 as of 2026-09-03, and it is competing directly against a free Cornell Lab app that is better at the hardest part of the job. It is genuinely difficult to construct the case for paying here.
- Orvik For the rest of what you point a camera at In-app purchases $4.99–$29.99
Ours, and it is not a Merlin replacement — nothing in this list is. It covers the eight things a person on a walk actually photographs: plants, insects, animals, birds, rocks, collectibles, food and natural phenomena, from one camera, with the ranked near-misses left visible.
Against it: On birds Merlin is comprehensively better and free, and we have no sound identification. If birds are what you care about, this is the wrong app and Merlin is the right one.
All of them, priced
| App | Download | In-app purchases | Cheapest | Dearest |
|---|---|---|---|---|
| Merlin Bird ID | Free | None | — | — |
| eBird | Free | None | — | — |
| Audubon Bird Guide | Free | None | — | — |
| Seek | Free | None | — | — |
| Picture Bird | Free | 3 tiers | $3.99 | $39.99 |
| Orvik | Free | 2 tiers | $4.99 | $29.99 |
Why Sound ID has no competition
Photo identification of birds is a solved-enough problem that several apps do it adequately. Sound is not, and Merlin's Sound ID is the single most impressive thing any app in this comparison does.
It listens continuously and names species as they sing, several at once, drawing a live spectrogram with each identification labelled against the part of the recording that produced it. Standing in a wood at dawn with it running is a different experience from birding without it, and it routinely finds species that experienced birders in the same spot had not registered.
The reason no commercial app matches it is not effort, it is data. Cornell has the Macaulay Library — decades of catalogued, expert-verified recordings from around the world — and eBird's checklist data to weight predictions by what is actually plausible at your location on that date. That combination is an institutional asset, not a feature somebody can ship.
The practical consequence for this page: if sound matters to you at all, the comparison is over before it starts.
The one thing Merlin will not do
Merlin identifies birds. It does not identify the plant they are nesting in, the insect in the beak, the feather on the path, the egg in the nest, the mammal track in the mud or the rock the bird was standing on.
That is a scope decision rather than a shortcoming, and it is the correct decision — a bird identifier built by ornithologists is better than a general identifier at birds, which is exactly what the ratings show. But it is also why nobody's phone has only Merlin on it.
The gaps split cleanly by whether the subject was ever alive. Living things — plants, insects, mammals, fungi — are covered free by Seek, which needs no account and works with no signal. Things that were never alive — rocks, minerals, fossils, coins, made objects — are covered by no naturalist app at all, which is the gap general identifiers exist to fill.
And some of it is not an app question. A feather on the ground, an egg in a nest and a track in mud are all identified from characters you can list rather than photograph, which is why we built free browser keys for feathers, eggs and tracks instead of pretending a camera solves them.
Free here is institutional, not promotional
Three of the five apps on this page list no in-app purchases at all on their US App Store listings as of 2026-09-03: Merlin, eBird and the Audubon Bird Guide. That is not a trial, a limited tier or a loss leader — there is nothing inside them to buy.
All three are published by institutions rather than businesses: the Cornell Lab of Ornithology for the first two, the National Audubon Society for the third. Both are membership-funded organisations whose purpose includes getting people to care about birds, and a paywall would work against that purpose. The apps are outreach, and they are extremely well made outreach.
Set against that, a commercial bird identifier has to justify $3.99 to $39.99 against a free app with 112,000 five-star-leaning reviews and a research library behind it. That is a hard sell, and the honest thing to say on a page like this is that in the bird category specifically, paying is difficult to justify.
Setting Merlin up properly before you go out
Most complaints about Merlin are configuration rather than capability, and four minutes at home fixes them.
- Download your regional bird pack over wifi. The packs are large, and Merlin cannot identify offline without one. Downloading in the field on a weak signal is where the frustration comes from.
- Download the packs for where you are going, not just where you live. A pack for the wrong continent produces confident nonsense.
- Give it microphone access and check Sound ID works before you need it.
- Turn off noise reduction if your recordings sound processed. This is the most-searched Merlin setting there is, and the answer is that the control lives in the app's own settings rather than in iOS — heavy processing can strip the quiet birds you were trying to catch.
- Keep location on. Merlin weights its predictions by what is plausible where and when you are, and that is a large part of why it is accurate.
The location point is worth dwelling on. A general identifier guesses from the image; Merlin guesses from the image and from decades of eBird records saying what is actually present in that county in that week. That prior is doing an enormous amount of work.
How these figures were gathered
Every price, in-app purchase tier, rating, review count, version, size and update date on this page is read from each app's US App Store listing on 2026-09-03 through Apple's own Lookup API and product pages. Nothing is a number typed from memory, and the build fails if one appears in the prose.
This page recommends against replacing the app it is nominally about. That is not modesty for its own sake — Merlin is free, it is better than the paid options at the thing that is hard, and a comparison page that would not say so is not worth reading.
Questions people ask
Is Merlin Bird ID really free?
Yes, completely. Its US App Store listing carried no in-app purchases at all on 2026-09-03 — no subscription, no unlock, nothing to buy inside it. It is published by the Cornell Lab of Ornithology, a university research programme funded largely by membership and donation, and the app is outreach rather than a product.
Is there anything better than Merlin for birds?
No, and it is not close. Merlin rates 4.9 from 112,000 reviews, identifies by photo, by a five-question wizard and by live sound, and its Sound ID names several species singing at once. Its advantage is institutional: the Macaulay Library of expert-verified recordings and eBird's records of what is actually present near you, weighting every prediction. Commercial rivals cannot buy that.
What is the difference between Merlin and eBird?
Merlin works out what a bird is; eBird records that you saw it. They are companion apps from the same Cornell Lab and both are free with no in-app purchases. Use Merlin to identify, eBird to log the sighting and to see what other birders are reporting near you right now. Neither does the other's job.
Does Merlin work without a signal?
Yes, once you have downloaded the bird pack for your region — but only then, and the packs are large. Download over wifi before you travel, and download the pack for where you are going rather than only where you live. Location also matters for accuracy: Merlin weights predictions by what is plausible in that place at that time of year.
What can I use for feathers, eggs and nests?
Not a camera app, mostly. Those are identified from characters you can list — the length and pattern of a feather, the colour and size of an egg and the nest it was in — rather than from a photograph, which is why we built free browser keys for feathers and eggs. Note that in the United States it is illegal to possess the feathers or eggs of almost any native bird, so photograph and leave them.
Is a paid bird app ever worth it?
Rarely, and this page will not pretend otherwise. Picture Bird works and looks tidy, with 40,000 ratings, but it carries 3 purchase tiers from $3.99 to $39.99 while competing against a free Cornell Lab app that is better at sound. If you want to spend money on birds, membership of the Cornell Lab or Audubon buys more than a subscription does.
What should I add alongside Merlin?
eBird, to log and to find birds. The Audubon guide, for the deep species accounts Merlin only summarises. Seek, free and on-device, for every living thing that is not a bird. And a general identifier if you also point your camera at rocks, fossils or coins, since no naturalist app covers things that were never alive.
One app instead of 5
Orvik identifies plants, insects, animals, birds, rocks, collectibles, food and natural phenomena from one camera, and shows the near-misses so you can check the answer rather than take it on faith.
Keep reading on Orvik
Other comparisons
Where these figures come from
- Prices, in-app purchase tiers, ratings, versions, download sizes and update dates are read from each app’s US App Store listing on 2026-09-03 using Apple’s own Lookup API and product pages. Nothing on this page is a figure somebody typed from memory, and the build fails if one appears.
- Apple does not publish billing periods next to in-app purchase names, so where two tiers share a name they are usually the same subscription billed over different terms. Check the current price in the App Store before you buy anything.
- Scope and behaviour — what each app identifies, whether it works offline, whether a human confirms the result — come from the apps’ own listings and from using them.
- Orvik is our app. We have tried to be specific about where these competitors are better, because a comparison that never concedes anything is not worth reading.