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  <span style="font-size:12px;font-weight:500;color:#516271;">Independent comparison on Should I Use It</span>
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<a href="https://shouldiuse.io/vs/justlearn/duolingo">Justlearn vs Duolingo on Should I Use It</a>

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Justlearn versus Duolingo
Compare	Justlearn	Duolingo
Verdict	Depends	Depends
Best for	Budget hobbyist language learners	Casual daily practice
Who it's not for	Companies buying employee language training . wrong tool entirely	Anyone needing fast fluency for work or travel
Privacy	No known public vulnerabilities found in the sources reviewed.^⁸	2023 breach affected 2.6M accounts; one 2017 CVE in the discontinued TinyCards app.^⁹
Support quality	No direct buyer-support evidence found	No evidence in sources
Public sentiment	Feedback skews negative on the supply side . tutors describe very low pay . while learner reviews are mixed and thin.^¹	Opinion is polarized: casual users love the streak-driven habit, while serious learners say progress stalls.
Biggest gotcha	Tutor rates as low as $2.80/hour reported . expect quality inconsistency and churn.^²	2.6M user records circulated on the dark web after the 2023 leak^⁹

Pick Justlearn when

Budget hobbyist language learners
Rare-language learners (e.g. Yoruba)
AI-curious users comparing tutors

When Justlearn is not a fit

Companies buying employee language training . wrong tool entirely
Buyers who need vetted, consistent tutor quality
Anyone requiring clear published pricing and contracts

Pick Duolingo when

Casual daily practice
Complete beginners in popular languages
Habit-driven streak learners
Students supplementing a real course

When Duolingo is not a fit

Anyone needing fast fluency for work or travel
Intermediate learners past the app's ceiling
Serious learners wanting conversation practice
People expecting an app alone to teach a language

Sources

Trustpilot reviews of justlearn.comtrustpilot.com
review
Reddit: Miserable working 2 years for 2.8/hourreddit.com
review
Reddit: tutor rate $6 per 25 minreddit.com
review
G2: Justlearn products, 0 reviewsg2.com
review
Crunchbase company profilecrunchbase.com
news
Just Learn homepage (AI directory)justlearn.com
official
Just Learn on Google Playplay.google.com
official
Just Learn security pagejustlearn.com
security
Duolingo Data Breachhaveibeenpwned.com
security
CVE-2017-16905 Detailnvd.nist.gov
security
Duolingo Surpasses 50 Million Daily Active Usersinvestors.duolingo.com
news
Why I Don't Recommend Duolingo (Review)autolingual.com
review
Duolingo Review: 600 Days With Duolingolanguagementoring.com
review
Why I Finally Quit Duolingotestprepinsight.com
review
Is Duolingo wasting your time?fluentlanguage.co.uk
review
Duolingo's pricing tiers on Redditreddit.com
review