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Education · head to head

Busuu vs Merlin Bird ID

Busuu logo

Busuu

Education

Language learning app with a community correction feature, owned by Chegg since 2022

From
Free
Rated
-
Full reviewWebsite
Merlin Bird ID logo

Merlin Bird ID

Education

Free bird identification app from Cornell Lab of Ornithology using photo, sound and step-by-step ID

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Busuu the free tier is limited enough that meaningful progress in most languages effectively requires the Premium subscription within a few weeks of use.; Merlin Bird ID it only identifies birds, so it is not useful for plants, insects or other wildlife the way a general nature app is.
  • They diverge on capability: Busuu covers Structured course units, Merlin Bird ID covers Sound ID.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Busuu and Merlin Bird ID actually diverge.

Attributes where Busuu and Merlin Bird ID differ
AttributeBusuuMerlin Bird ID
Pricing modelFree with a Premium subscriptionFree, no ads and no in-app purchases
PlatformsiOS, Android, WebiOS, Android

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Education).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Busuu

  • Structured course units
  • Community correction
  • Study plans and certification
  • Offline lessons
  • Grammar review units
  • Live tutoring credits

Only in Merlin Bird ID

  • Sound ID
  • Photo ID
  • Step-by-step ID
  • Offline regional packs
  • eBird-linked suggestions
  • No account required for basic use

What people use each for

The jobs each tool is most often brought in to do.

Busuu

  • A self-directed adult learner who wants human correction on writing and speaking exercises rather than only algorithmic feedbacknot Merlin Bird ID
  • Someone working toward a specific proficiency level and wanting a structured study plan rather than a gamified drip of lessonsnot Merlin Bird ID
  • A learner who wants offline access for commuting or travel, which requires the Premium subscriptionnot Merlin Bird ID
  • A buyer comparing Busuu against Duolingo who values depth of grammar explanation over gamificationnot Merlin Bird ID

Merlin Bird ID

  • A casual walker who hears a bird and wants to know what it is without paying for an appnot Busuu
  • A birdwatcher building a life list who wants identification tied to real regional sighting datanot Busuu
  • Someone teaching a child to identify birds without exposing them to ads or a paywallnot Busuu
  • A hiker who wants offline bird identification in an area with no signalnot Busuu

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Busuu

  • The free tier is limited enough that meaningful progress in most languages effectively requires the Premium subscription within a few weeks of use.
  • Community correction quality depends on other users being active in your target language at the time you submit, so response speed and quality vary noticeably by language and time zone.
  • Since the 2022 Chegg acquisition, Busuu sits inside a company built around subscription homework and study services, and Chegg has faced its own commercial pressure from AI tools reducing demand for its core products, which is a relevant roadmap risk.
  • Course depth and language coverage are uneven; widely spoken languages such as Spanish and French have far more content than smaller language courses.
  • The official Busuu certificate is not a recognised external qualification equivalent to something like an IELTS or DELF exam, so it carries limited weight outside informal use.

Merlin Bird ID

  • It only identifies birds, so it is not useful for plants, insects or other wildlife the way a general nature app is.
  • Sound ID can struggle in noisy environments or with overlapping bird calls, since it depends on a clean audio signal.
  • Being a free institutional project, feature releases and interface polish move more slowly than a funded commercial app.
  • Photo ID accuracy drops for juvenile birds, moulting birds or poor-quality photos, more so than for well-lit adult specimens.
  • It has no social or gamified layer, so users who want streaks, badges or a community feed will find it plain by comparison.

Pricing, plan by plan

Busuu

Free
  • Busuu Premium$13.99/month
    • Free tier gives limited vocabulary and grammar content per language, with ads
    • Premium unlocks full course content, offline lessons and grammar review units
    • Annual Premium plans typically run $69.99 to $99.99, cheaper per month than monthly billing

Merlin Bird ID

Free
  • Merlin Bird IDFree
    • All identification modes included
    • Offline regional bird packs
    • No account required for identification

Which should you pick?

Choose Busuu if

  • You need structured course units.
  • You want to start without paying.
  • You work on iOS, Android, Web.
  • You also want community correction.
Busuu review

Choose Merlin Bird ID if

  • You need sound id.
  • You want to start without paying.
  • You work on iOS, Android.
  • You also want photo id.
Merlin Bird ID review

Questions people ask

Is Busuu or Merlin Bird ID better?
Neither clearly leads. Busuu starts at Free and Merlin Bird ID at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Busuu or Merlin Bird ID?
Busuu starts at Free and Merlin Bird ID at Free.
Does Busuu or Merlin Bird ID run on more platforms?
Busuu runs on iOS, Android, Web. Merlin Bird ID runs on iOS, Android.
Can I use Busuu for free?
Both have a free tier, so you can try either at no cost before committing.
What is Busuu best used for?
Busuu is most often used for a self-directed adult learner who wants human correction on writing and speaking exercises rather than only algorithmic feedback, someone working toward a specific proficiency level and wanting a structured study plan rather than a gamified drip of lessons, a learner who wants offline access for commuting or travel, which requires the premium subscription, a buyer comparing busuu against duolingo who values depth of grammar explanation over gamification. Of those, a self-directed adult learner who wants human correction on writing and speaking exercises rather than only algorithmic feedback and someone working toward a specific proficiency level and wanting a structured study plan rather than a gamified drip of lessons are not what Merlin Bird ID is typically brought in for.
What can Busuu do that Merlin Bird ID cannot?
Busuu covers Structured course units, Community correction, Study plans and certification, Offline lessons. Merlin Bird ID covers Sound ID, Photo ID, Step-by-step ID, Offline regional packs.

Answered from the vendors’ own pages

Busuu: Is Busuu free?

A limited amount of vocabulary and grammar content per language is free with ads. Full course access, offline lessons and the certificate require Busuu Premium.

Merlin Bird ID: Is Merlin Bird ID really free with no catch?

Yes. It has no ads, no in-app purchases and no subscription; it is funded by the Cornell Lab of Ornithology as a research and outreach tool.

Busuu: Who owns Busuu?

Chegg, the publicly traded US education technology company, acquired Busuu in 2022.

Merlin Bird ID: How is it different from eBird?

Merlin identifies birds; eBird is where you log checklists and sightings that feed the research database Merlin draws its suggestions from.

Busuu: What is the community correction feature?

Writing and speaking exercises are submitted to other Busuu users who are native speakers of your target language, who correct them for free as part of the community exchange.

Merlin Bird ID: Does it work offline?

Yes, once you download the regional bird pack for your area.

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