Phrasebench

The bench ranking · checked September 2026

The best language learning apps, matched to the job you're hiring one for

The honest answer to "what is the best language learning app" is a question back: for which language, and for which kind of practice? Here is the whole bench, ranked by what each app genuinely does best — with every fact dated, and the free option named even though it pays us nothing.

What’s on this page
How many languages each app says it covers — each vendor's own count, counted its own way
Memrise150+
Ling70+
Pimsleur50+
Duolingo42
Mondly41
Rosetta Stone25
Busuu14
Rocket Languages14
Babbel13

A bigger bar is not a better app: catalogue breadth says nothing about depth, and the counts are self-reported. Read the row for the language you actually want.

If you only take one sentence from this page, take this one: pick the app that matches your language and your day, not the one with the loudest ads. A commuter learning Portuguese needs a different tool than a parent choosing something for a nine-year-old, and both need a different tool than someone finally committing to Mandarin characters.

How this ranking works

Each app below is ranked for a job, not against every rival on every axis — the full scale we weigh them on is published in how we test language apps. Three rules shape everything. First, every fragile fact — a language count, a free-tier limit, a price — was read on the vendor's own page on 23 September 2026 and is dated where it appears; where a vendor publishes no price to a plain page-load, we say "not published" rather than guess. Second, we quote no learning-speed figures except the US Foreign Service Institute's classroom estimates, credited as theirs. Third, some links on this page are partner links that can pay us a commission; two of the apps we recommend, Duolingo and Speak, pay us nothing at all, and they stay because the ranking is about you, not us.

The bench at a glance

Nine language apps and the job each one is best hired for — vendor pages read 23 September 2026
AppHire it forLanguages (own count)Free to start?Worth knowing
BabbelA structured course for a European language13First lesson of every course free — up to 80 free lessons in some languagesNo Korean, Mandarin or Japanese in its catalogue as of September 2026
PimsleurLearning by ear — commutes, kitchens, dog walks50+A free lesson before you commit30-minute audio lessons; offline mode and CarPlay/Android Auto; 30-day return guarantee
DuolingoA free daily habit while you find out if you'll stick with it42Yes — the core course is free with adsNo affiliate program: it pays us nothing, and we recommend it anyway
BusuuSpeaking practice checked by actual humans14Yes — a free tier to beginIts community corrects your sentences; parent company Chegg cut ~45% of staff in Oct 2025
LingLanguages the famous apps skip70+2 free units, plus a 7-day trial on annual plansThai, Vietnamese, Tagalog, Serbian, Georgian and more; its own pages say 70+ in one place and 80 in another
Rosetta StoneImmersion-style drills with speech feedback25Nothing free we could verify on its pages$19.99/mo billed monthly, or $159/yr — the only roster prices published where we could read them (23 Sep 2026)
MemriseVocabulary from native-speaker video clips150+Yes — start free, pay for extrasThe 150+ is its own count and includes constructed languages like Klingon
Rocket LanguagesBuy-once courses with downloadable audio14Free trialCatalogue includes ASL; prices not published to a plain page-load
MondlyCasual variety across many languages41Not verifiable — its site blocks a plain page-loadOwned by Pearson since 2022

Babbel — the structured course

Babbel is the app to hire when you want a course, not a game: lessons that build on each other, grammar explained when it matters, and dialogue you would plausibly say aloud. Its catalogue is deliberately narrow — thirteen languages for English speakers as of September 2026: Spanish, French, German, Italian, Portuguese, Russian, Danish, Dutch, Indonesian, Norwegian, Polish, Swedish and Turkish — and the narrowness is the point, because each course is built rather than templated.

Two cautions before you subscribe. The catalogue gap is real: no Korean, no Mandarin, no Japanese, so if your language is Asian, Babbel is simply not on your shortlist. And Babbel does not publish its subscription prices to a plain page-load — the prices page renders in-app — so we print none here; its free opening is generous, though: the first lesson of every course is free, and depending on the language that can mean up to 80 free lessons before you pay a cent.

Partner link (sponsored/nofollow): if you subscribe through it, Babbel pays Phrasebench a commission. That payment never moves an app up this page — check the current price and trial terms on the app’s own page before you commit.

Pimsleur — learning by ear

Pimsleur wins whenever your language time is also your driving, cooking or walking time. Its unit is a 30-minute audio lesson that makes you answer out loud on a spaced-repetition rhythm, its catalogue spans more than fifty courses, and it is the only app on this bench whose own pages advertise a proper offline mode plus Apple CarPlay and Android Auto — which is why it also anchors our travel-and-offline roundup. There is a free lesson to try, and a 30-day return guarantee on its subscriptions.

The trade-off is the mirror image of the strength: audio-first means reading and writing come slower, and if you learn best by seeing a sentence, thirty minutes of ears-only can feel like fog. Treat its "speak at an intermediate level in 30 days" line as marketing, not measurement — it is the vendor's claim, and no app's timeline survives contact with a real week.

Partner link (sponsored/nofollow): if you subscribe through it, Pimsleur pays Phrasebench a commission. That payment never moves an app up this page — check the current price and trial terms on the app’s own page before you commit.

Duolingo — the free habit that pays us nothing

Duolingo is the honest first answer for anyone who hasn't yet proved to themselves they'll still be learning in March. The core course is free with ads across a 42-language catalogue, the habit mechanics genuinely work, and starting free means the only thing you risk is time. Duolingo runs no affiliate program — this recommendation earns us exactly nothing, which is the best reason to trust it.

Know what you're getting, though. The free tier's ads are constant; the paid tiers — Super, which removes them, and Max, which adds AI conversation features — are where Duolingo's 10.9 million paying subscribers (June 2025) come from. And in April 2025 it launched 148 new courses built with generative AI, part of an "AI-first" shift that drew a real backlash from users over quality — worth reading about in our AI language apps roundup before you assume every one of those 42 courses got equal love.

Busuu — speaking practice with human feedback

Busuu's distinctive move is people: you write or record in the language you're learning, and native speakers from its community — over 120 million learners, by its own count — correct you. That single feature addresses the thing every self-study app is worst at, which is why Busuu leads our speaking practice roundup. Its 14 languages cover the big names, including Korean, Chinese, Arabic and Japanese, and there is a free tier to start.

One thing we won't hide: Busuu's parent company is Chegg, which cut roughly 45% of its staff in October 2025 and has pivoted the business around Busuu and its skills arm. The app works today and we recommend it for what it does — but never as your only tool, and if you're weighing a long subscription against a short one, that corporate weather belongs in the decision.

Partner link (sponsored/nofollow): if you subscribe through it, Busuu pays Phrasebench a commission. That payment never moves an app up this page — check the current price and trial terms on the app’s own page before you commit.

Ling — when your language isn't on the big apps

Ask the famous apps for Thai, Vietnamese, Tagalog, Serbian, Georgian or Khmer and you'll mostly get silence — Ling's entire reason to exist is that silence. Its catalogue runs past seventy languages (its own pages say "70+" in one place and "80" in the footer; we'll say "more than 70" until it agrees with itself), every new user gets two free units, and annual plans carry a 7-day trial. Lesson depth varies across a catalogue that wide, so spend the free units in your actual language before subscribing — but for the long tail, it is frequently the only serious option on this bench.

Partner link (sponsored/nofollow): if you subscribe through it, Ling pays Phrasebench a commission. That payment never moves an app up this page — check the current price and trial terms on the app’s own page before you commit.

Rosetta Stone — immersion with a published price

Rosetta Stone teaches by immersion: pictures and target-language audio, almost no English scaffolding, with its TruAccent speech tool checking your pronunciation as you go across 25 languages. It suits learners who want drilling rather than explanation — if you need to know why a sentence works, you will find it withholding on purpose.

It also earns a small medal for transparency: it is the only paid app on this bench whose prices we could actually read on its own buy page — $19.99 a month billed monthly, or $159 a year, shown with a "save 33%" label we'd treat as promotional framing rather than a promise (read 23 September 2026). We found no free tier we could verify, so budget for paying from week one.

Partner link (sponsored/nofollow): if you subscribe through it, Rosetta Stone pays Phrasebench a commission. That payment never moves an app up this page — check the current price and trial terms on the app’s own page before you commit.

The rest of the bench: Memrise, Rocket Languages, Mondly

Three more earn a seat for narrower jobs — all three linked here as partner links, meaning a subscription can pay us a commission. Memrise is the vocabulary engine: native-speaker video clips so you hear how people actually talk, an AI speaking-practice mode, and a free way in. Its "over 150 languages" is a self-count that includes community material and constructed languages — Klingon is in there — so read it as breadth of material, not 150 built courses. Rocket Languages sells courses you buy rather than rent, with heavy downloadable audio and one genuine rarity for this list: American Sign Language in its 14-language catalogue; its prices aren't published to a plain page-load, so check them on the day. Mondly, owned by Pearson since 2022, covers 41 languages in light, gamified sessions — good for variety and dabbling, though its site wouldn't even serve us a page to verify details on, which tells you how much of its funnel lives in the app. All three appear again, where they've earned it, in the free language apps roundup.

Which app for which job

Run the decision in this order. Name the language first: a European language with a Babbel course argues for Babbel; Korean, Mandarin or Japanese rules Babbel out on the spot; a long-tail language probably means Ling before anything else. Then name your day: if your learning time has your hands busy, Pimsleur; if you can sit with a screen, a structured course or Rosetta Stone's drills. Then name your weakness: if you never speak, Busuu's human corrections or an AI conversation partner. And if you cannot yet promise yourself six weeks of practice, start with Duolingo's free tier and our language-specific guides, starting with Spanish — prove the habit, then pay for the tool that fits it.

And hold every app to the same honest yardstick: the US Foreign Service Institute puts even Category I languages — Spanish, Italian, Portuguese and their neighbours — at 600 to 750 classroom hours for professional working proficiency, and Category IV languages like Korean and Mandarin at 2,200. An app is a superb first several hundred hours. It is not the whole road, and the good ones don't claim to be.

Best language app questions, answered plainly

What is the best language learning app overall?
For a structured course in a major European language, Babbel is the strongest app we cover; for audio-first learning it's Pimsleur; for a free start it's Duolingo, which pays us nothing to say so. "Overall best" genuinely depends on your language — Babbel, for instance, offers no Korean, Mandarin or Japanese at all as of September 2026.
Which language app is completely free?
Duolingo is the only app on this page whose full core course is free, supported by ads. Memrise and Busuu let you start free and charge for extras; Babbel opens the first lesson of every course free; Ling gives two free units. Free-to-start and free are different promises — our free apps roundup separates them app by app.
How much do language learning apps cost?
Mostly, the honest answer is: whatever the app shows you at checkout that day, because most of these vendors don't publish prices on pages a reader can simply load — Babbel, Pimsleur, Busuu, Memrise, Rocket and Mondly all kept theirs out of view when we checked on 23 September 2026. The exception we could read: Rosetta Stone at $19.99 a month billed monthly, or $159 a year.
Can I get fluent using only an app?
No, and be suspicious of anyone selling that. The US Foreign Service Institute's classroom estimates run 600–750 hours for the languages closest to English and 2,200 for the hardest group — and those are hours with teachers and conversation, not streaks. Apps are excellent for the foundation and the daily habit; real conversation is the part you'll eventually need humans for.
Does this site earn money from these apps?
From some of them, yes: marked partner links to apps like Babbel, Pimsleur or Busuu can pay us a commission, disclosed beside each. Duolingo and Speak have no affiliate programs and pay us nothing, and they are recommended anyway. No payment moves an app's position — the day that changes, this page stops being worth reading, and we know it.