The gold-standard spaced-repetition flashcard app with community decks for every language.
AppsTools Free BeginnerIntermediateAdvanced
vocabulary
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Free on desktop, Android and web; the iOS app is a one-off paid purchase that funds the project. The interface is dated and the options are overwhelming at first, but nothing beats it for retaining vocabulary over years. Most effective when you stop grinding premade decks and start mining sentences from things you actually read or watch.
Comprehensible-input German: stories and monologues, no English, no grammar lectures.
YouTube Free IntermediateAdvanced B1–C1
listeningimmersionvocabulary
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Mark Weber's channel applies the comprehensible-input philosophy to German — extended natural speech on everyday topics, pitched just above your comfort level, with no translation crutch. Good for learners who've done the grammar and now need volume of listening. Free; the upload pace has slowed considerably, so treat it as a strong archive rather than a weekly show.
25,000+ free German grammar exercises, sortable by topic, level, or textbook chapter.
WebsitesCoursesTools Free BeginnerIntermediateAdvanced A1–C1
grammarvocabularywriting
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A free grammar drill machine covering 150+ topics A1–C1, with the unusual feature that you can filter exercises by the textbook and chapter you're using in class. No account required, no ads, instant correction. It's pure drilling — dry, no explanations to speak of — so bring your grammar understanding from elsewhere and use this to automate it.
A huge free German-teacher blog: exercises, word lists, exam prep, all levels.
Websites Free BeginnerIntermediateAdvanced A1–C1
grammarvocabularyreadinglistening
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Written by a German teacher, this is one of the largest free German learning sites in German: level-sorted exercises, thematic vocabulary lists, listening tasks, Wortschatz-Bilder and prep material for Goethe and telc exams. Everything is free and there's no funnel to a paid product. Organisation is blog-shaped rather than curricular, so use the level tags and search rather than trying to read it in order.
Community-built German-English dictionary that knows idioms and regional usage.
DictionariesWebsitesApps Free BeginnerIntermediateAdvanced A1–C2
vocabularyreadingwriting
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Nearly 40,000 volunteer contributors have made this the go-to German-English dictionary for exactly the phrases Google Translate mangles — compounds, idioms, technical terms, Austrian and Swiss variants. Every entry shows gender, plural and usage tags, and there's an offline mobile app. Free; the crowdsourced nature occasionally shows in odd or unverified entries, so cross-check anything surprising.
Germany's public broadcaster gives away a full A1–C1 German curriculum, free.
CoursesWebsitesMedia Free BeginnerIntermediateAdvanced A1–C1
listeningreadinggrammarvocabulary
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Deutsche Welle publishes complete graded courses, placement tests, vocabulary trainers, Deutschtrainer clips and news formats like Top-Thema — all free, no ads, no upsell, available in dozens of interface languages. In terms of value per euro nothing else in German learning is close. The interface is dense and it's easy to wander rather than follow a path, so pick one course track and stick to it.