
Memrise
Busuu
Babbel
Anki
Lingvist
Rosetta Stone
Mondly
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.

Lokalise
Crowdin
DeepL Translator
Google Translate
Phrase
Lara Translate
AI TranslateDocs
Free AI file translator. Translate DOCX, PDF, JSON, HTML, YAML, Markdown and 15+ file formats online for free. Template variables, code blocks, and structure stay 100% intact.

Which is more popular?
Based on our record, Duolingo seems to be more popular. It has been mentioned 70 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | duolingo.com | structrans.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from the United States · 500 - 999 employees · 2011 | Startup from Ukraine · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Duolingo yet.
structrans is an online AI-powered document and structured file translation tool built for content managers, software developers, and localization teams. Standard translation tools like Google Translate or DeepL web upload frequently break Word document margins, distort PDF table layouts, or...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of structrans yet.
Walkthroughs and reviews on video.
Duolingo Review: Does it really work?
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Duolingo and structrans.
structrans's answer:
structrans uses syntax-aware and layout-aware AST parsing. Instead of treating files as raw text, it extracts only human-readable strings, translating copy via LLMs while preserving 100% of document margins, tables, and code variables ({user}, %s, {{id}}).
structrans's answer:
Unlike generic translators (Google Translate, DeepL) that distort document formatting and break code variables, or enterprise TMS platforms (Lokalise, Crowdin) that cost 100–500$/mo and require complex setup, structrans offers instant, zero-friction web translation with zero layout corruption and a free tier.
structrans's answer:
Content managers translating corporate Word (DOCX) and PDF documents, software developers localizing app i18n files (.json, .po, .arb, .xliff), and marketing teams needing fast, layout-preserved document translation.
structrans's answer:
We got frustrated after repeatedly seeing standard web translators destroy Word document tables and break template variables during software release cycles. We built structrans to give developers and content managers a simple, privacy-first tool that translates files cleanly without ruining code or layout.
structrans's answer:
Built on Cloudflare Workers edge runtime, Astro, React, and powered by high-accuracy LLM translation engines combined with custom document AST parsers and LibreOffice/Tesseract OCR layout processing.
structrans's answer:
structrans is primarily used by indie software developers, digital marketing agencies, content managers, and remote international startup teams translating i18n locale files and business documents across 20+ languages.
Share your experience with using Duolingo and structrans. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


For AI conversation practice, Duolingo Max is the tier to choose, and we'd call it a useful upgrade only if those extra features matter to you. It sits above the paid Super Duolingo tier rather than directly above the...
Our team of dedicated writers and language enthusiasts is committed to bringing you insightful content and expert advice to enhance your Duolingo experience. From language-learning tips to in-depth analyses of...
Language learning apps such as Duolingo, Babbel and others have millions of registered users worldwide. Duolingo alone has over 300 million registered users.
We have no reviews of structrans yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Duolingo: a language-learning app that uses points, levels, and rewards to keep you motivated. This is the most effective when you do it with your friends or a group of people who share your learning goals. I got really addicted to... Source: over 3 years ago
Hi! I wish I'd seen a post like this a few months ago. I would have been interested then. By now it's a little late for me. I just signed up for the 2 week free trial since that's about all the time I have left before I leave. If you... Source: over 3 years ago
If you want a guided course try Memrise or Duolingo. Source: over 3 years ago
Tracking structrans since Aug 2026.
When comparing Duolingo and structrans, you can also consider the following products.

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Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.
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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 .
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Localize your product in a seamless way with Crowdin's translation management software
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Babbel is a paid language learning service that aims to strike a balance between thoroughness and cost efficiency.
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DeepL Translator is a machine translator that currently supports 42 language combinations.
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