Best Apps to Learn Danish: Babbel, Mondly & 17 Minute Languages Compared

Three apps, one goal – learning Danish. But Babbel, Mondly and 17 Minute Languages work very differently. This comparison is based on real testing: Babbel used for several months to learn Danish, Mondly tested for three months on Norwegian, and 17 Minute Languages used for four years to reach business-level Norwegian. Here’s what you actually need to know. ✓

Most app comparison articles are written by people who spent two weeks with each tool and called it a review. The problem is that language learning apps reveal their real strengths and weaknesses over months, not days. The gamification wears off. The repetition mechanics either work long-term or they don’t. The content depth either holds up or it runs dry.

I’ve had enough time with all three of these platforms to give you an honest picture. Not a feature list – an actual assessment of what each one does well, where it falls short, and who it’s right for.

Looking for a broader overview first? → Learn Danish: complete guide to courses and methods

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The Three Apps at a Glance

17 Minute Languages – The Workhorse

I used 17 Minute Languages to learn Norwegian for four years. That’s not a casual recommendation – that’s what took me from zero to business-level fluency. The method is deceptively simple: vocabulary presented in spaced repetition cycles, with native speaker audio, across multiple exercise types. You decide the daily volume, the app manages the repetition schedule.

What sets it apart from most vocabulary tools is that it doesn’t gamify in a way that erodes discipline. There are no streaks to protect, no coins to collect, no social pressure mechanics. You show up, you do the session, the system tracks what needs reviewing. Over four years, that consistency compounded into something that apps with flashier interfaces couldn’t deliver.

For Danish specifically, 17 Minute Languages covers all three levels: the beginner course (A1/A2, ~1,300 words), the intermediate course (B1/B2, 1,800 additional words), and a C1/C2 proficiency course (2,100 specialist vocabulary items). That’s a full learning path from zero to advanced without switching platforms.

The honest limitation: there’s no speech recognition, and the grammar is not systematically taught – it’s absorbed through vocabulary context. For some learners that works excellently. For learners who need explicit grammar explanations before they feel comfortable, it can feel incomplete. In that case, combining 17ML with a grammar-focused resource makes sense.

17 Minute Languages: Right for you if…

• You want a structured, systematic vocabulary path from beginner to advanced
• You’re self-disciplined enough to work without gamification pressure
• You want a long-term tool that scales with your level
• You prefer a one-time purchase over an ongoing subscription

Not the right fit if you need explicit grammar instruction, speech output feedback, or short burst sessions to stay motivated.

Babbel Danish – Structure and Real-World Context

I used Babbel for Danish over several months. My honest take: Babbel is the best choice if you want grammar integrated from the start, not bolted on later. The lessons are built around realistic dialogue scenarios – you learn vocabulary inside sentence structures, not in isolation. That approach pays off when you try to actually speak, because the words come out with the right grammatical framing rather than as disconnected units.

The curriculum is well-sequenced. Beginner lessons don’t overwhelm you, and the difficulty ramp is smooth. The speech recognition feature is useful for pronunciation feedback, though Danish pronunciation is difficult enough that no app-based speech recognition fully captures its nuances – the stød and swallowed consonants are hard to evaluate algorithmically. Use it as a rough guide, not a gold standard.

Where Babbel earns its subscription fee is in content depth. The Danish course covers up to B2, and the material quality is genuinely high – curated by linguists, not generated at scale. The cultural context woven into lessons adds real value, particularly if you’re learning Danish for travel or work in Denmark.

The limitation I ran into is pace. Babbel’s lesson structure is somewhat fixed – you move through units sequentially, and the spaced repetition is less aggressive than dedicated vocabulary tools like 17ML. If you already have a vocabulary foundation and want to move fast, Babbel can feel slow. It’s better suited to learners who want to build properly from the ground up rather than learners in a hurry.

Babbel: Right for you if…

• You want grammar explained in context, not as dry rules
• You’re a beginner who wants a complete, well-structured course
• You’re learning Danish for real-world use – travel, work, conversation
• You want speech recognition feedback on pronunciation

Not the right fit if you’re an advanced learner looking to push beyond B2, or if you want to build vocabulary faster than a fixed lesson sequence allows.

Mondly Danish – Low Friction, Daily Habit

I tested Mondly for three months on Norwegian, which is structurally close enough to Danish to give a reliable read. Mondly’s biggest strength is friction reduction. The sessions are short, the interface is visually clean, and the gamification – points, streaks, leaderboards – is well-calibrated to keep you coming back without feeling hollow. If the core problem in your language learning is consistency rather than depth, Mondly solves it.

The speech recognition is a genuine plus. Mondly uses it throughout the lessons, not just as a bolt-on feature, which means you’re prompted to actually produce the language from early on. For Danish, where pronunciation is the main barrier to real communication, early speaking practice matters.

The honest limitation is depth. After three months, I’d built solid survival-level vocabulary and decent pronunciation awareness, but the grammar coverage is thin and the vocabulary range doesn’t go as far as Babbel or 17ML. The gamification also has a ceiling: eventually the novelty wears off and the learning system underneath has to carry its own weight. At that point, some learners find Mondly’s content depth insufficient for pushing to B1 and beyond.

Mondly works best as a daily habit tool alongside a more structured course, or as a standalone option for learners with modest fluency goals – travel Danish, basic conversation, cultural introduction.

Mondly: Right for you if…

• Consistency is your main challenge – you need the habit loop to work
• You want pronunciation practice built into daily sessions
• Your goal is travel-level or conversational Danish, not full fluency
• You want a free entry point before committing to a paid course

Not the right fit if you want deep grammar instruction or are aiming for B2+ and need a course with the content depth to get you there.

Which App Should You Choose?

There’s no single answer – the right choice depends on what’s actually getting in the way of your progress.

If the problem is that you can’t build a consistent habit, Mondly’s design removes friction better than the others. Start there, use the free version, and if the habit sticks, consider upgrading or layering in a more structured tool.

If the problem is that you want to understand the language properly – not just memorize survival phrases – Babbel’s grammar integration makes it the better foundation. Especially if you’re starting from zero and want to build correctly from the beginning.

If the problem is that you want to go far – B2, C1, genuine fluency – 17 Minute Languages is the tool I’d reach for. Not because it’s the most exciting, but because it’s the one that held up over four years without running out of content or losing its effectiveness. The vocabulary acquisition method is sound and the level progression from A1 to C2 within one platform is a real advantage.

For many learners, the best setup is a combination: 17 Minute Languages for systematic vocabulary + Babbel for grammar context + a tutor on Preply* for speaking practice. That covers all three dimensions of language learning without relying on any single tool to do everything.

Before You Start: Two Things Worth Knowing About Danish

Whatever app you choose, two aspects of Danish will come up early and need a dedicated resource:

Pronunciation is harder than the apps make it look. The soft D, the stød, and the compressed vowel sounds require deliberate ear training. Use native speaker audio from day one and supplement with Forvo’s Danish pronunciation database for individual words.

Numbers above 50 follow a vigesimal (base-20) system that no app explains properly. They just list the words. Understanding why halvtreds means 50 and halvfjerds means 70 takes about five minutes once someone walks you through the logic – and you’ll never forget them again. → Danish numbers explained: 1–100 and beyond

Irregular verbs are another early hurdle. The most common Danish verbs – sein, haben, gehen, kommen – are all irregular, meaning they don’t follow standard conjugation rules. No app covers them systematically enough to use as a sole reference. → Danish irregular verbs: complete table + how to learn them

For essential phrases to use alongside your app: → Most common Danish phrases

FAQ

Which is better for Danish: Babbel or Mondly?

Babbel offers more structured grammar and deeper content, making it the better choice for learners who want real fluency. Mondly is better for daily habit building and pronunciation practice, especially for beginners or casual learners.

Is 17 Minute Languages good for learning Danish?

Yes – it’s the most systematic vocabulary tool of the three, with courses covering A1 through C2. The spaced repetition method is highly effective for long-term retention. The limitation is that grammar is not explicitly taught.

Can I learn Danish with a free app?

Mondly has a free tier that gives access to basic lessons. 17 Minute Languages offers a 2-day full demo with no credit card required. Babbel’s first lesson is free. None of the free versions are sufficient on their own for meaningful progress – they’re best used as trials before committing.

How long does it take to learn Danish with an app?

With 15–20 minutes of daily study, most learners reach A2 in around 3 months and B1 in 12–18 months. Progress depends heavily on consistency and whether speaking practice is included alongside the app.

Do Danish learning apps cover irregular verbs?

All three apps include irregular verbs in their lessons, but none of them give you a complete reference table or a systematic drilling method for them specifically. For a full overview of all key irregular verbs with conjugation forms, a dedicated reference is more useful: Danish irregular verbs – complete conjugation table.