The short answer
Babbel teaches better. Duolingo is free and stickier. That is the whole comparison in a sentence, and which one "wins" depends entirely on which of those two things you need more.
If you are a literate adult who wants to actually understand a European language, and you will spend a few pounds a month, Babbel is the better tool - it explains grammar and drills practical dialogue. If you want something free, or you know your real problem is showing up at all, Duolingo is the better tool - nothing beats it for building a daily habit at zero cost.
Babbel vs Duolingo at a glance
| Babbel | Duolingo | |
|---|---|---|
| Price (from) | ~£5-6/mo on the annual plan | Free (optional Super tier removes ads) |
| Method/format | Grammar-led course, dialogue-based | Gamified tile-tapping, streaks and gems |
| Teaches grammar? | Yes - explains the rule, then drills it | No - you infer the rules as you go |
| Speaking practice | Light, scripted dialogue drills | Light, short speech exercises |
| Free tier | No (paid subscription) | Yes - the whole core app is free |
| Best for | Adults who want to understand a European language | Building a daily habit at zero cost |
How they teach
This is the real difference. Duolingo is built on gamified pattern-matching: you tap tiles, complete streaks, earn gems, and infer the rules as you go. It is brilliantly designed and genuinely fun, and for some people the inference works. But it rarely stops to explain, and many learners finish a tree able to recognise a lot and explain none of it.
Babbel is an old-fashioned course in a modern app. When a grammar point appears, it teaches the rule, then drills it in dialogue you might actually use. For an adult who can handle being told how the language works, that is faster and deeper.
Price
No contest, and it matters. Duolingo is free, ad-supported, with an optional Super tier to remove ads. Babbel is a subscription - around £5-6 a month on the annual plan, more month-to-month, frequently discounted. The question is not which is cheaper; it is whether Babbel's better teaching is worth a few pounds a month to you. For most serious learners, it is.
Habit and motivation
Here Duolingo wins outright. The streaks, reminders and gentle guilt are engineered to get you back daily, and consistency is most of what makes language learning work. Babbel deliberately does not weaponise your habit, which suits people who find streak mechanics stressful and underserves people who need the push.
The verdict
For the adult who is serious about a European language and will pay a little, Babbel is our pick - it is the better teacher, and teaching is the point. But this is the rare comparison where the runner-up is also the right answer for a lot of people: if you want free, or you struggle with consistency, Duolingo is genuinely the better choice for you.
The honest best-of-both: run Duolingo for the daily habit and Babbel for the instruction, and plan to outgrow both within a year in favour of real conversation with a tutor. The apps are how you arrive at that conversation ready.