
Which is more popular?
Based on our record, Mondly seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | mondly.com | opalstack.com |
| Pricing | — | |
| Company | Startup from Romania | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Mondly is a leading language learning company and its award-winning apps helped more than 35 million people in over 190 countries to learn new languages. Available in 33 languages, the Mondly mobile apps have a 4.7/5 star rating in the App Store and Google Play from more than 1,000,000 customer...
No description of Opalstack yet.
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Mondly versus Duolingo - Language Learning App Showdown. Which is the best? Full review.
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How often each product is chosen within a category, 0–100% relative to the other.


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External articles and on-site reviews we used to compare the two products.


If you take out the latter at a special price, you can get lifetime access to language courses in all 41 languages for just over $100. The app offers conversational language practice and embeds vocabulary in a...
Interactive features have changed the game in language learning. Apps like Mondly ($14.99/month) use chatbots, quizzes, challenges, and leaderboards. Rosetta Stone ($15.99/month) offers online tutoring for real-time...
Mondly is one of the best Babbel alternatives that provides short bursts of learning through fun and high-tech methods. The platform also offers VR and AR products, allowing you to integrate its language lessons,...
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Recommendations tracked on public social media and blogs since March 2021.


Digital courses like Duolingo, Rosetta Stone (both have versions of their products to help kids learn foreign languages), Mondly Kids or FluentU;. Source: over 5 years ago
I use a combination of mondly and preply. They work pretty well together. Source: over 5 years ago
Tracking Opalstack since Sep 2023.
When comparing Mondly and Opalstack, you can also consider the following products.

Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
Compare Duolingo to Mondly or Opalstack:

Join the global language learning community, take language courses to practice reading, writing, listening and speaking and learn a new language. Learn English with busuu's .
Compare Busuu to Mondly or Opalstack:

Learn a new language with games, humorous chatbots and over 30,000 native speaker videos.
Compare Memrise to Mondly or Opalstack:

Babbel is a paid language learning service that aims to strike a balance between thoroughness and cost efficiency.
Compare Babbel to Mondly or Opalstack:

Rosetta Stone is the world's most popular software for learning languages. It is offered at a cost of just $169 when purchased outright, but it is also possible to purchase language programs in a subscription format that offers ongoing support.
Compare Rosetta Stone to Mondly or Opalstack:

Lingvist helps you take your foreign language skills to the next level with a broad selection of exercises and lessons.
Compare Lingvist to Mondly or Opalstack: