DE Flow

Learn German Through Sound

Free · In-App Purchases · Designed for iPad. Not verified for macOS.

Learn German like you've never heard it before. DE Flow turns grammar into sound — 45 lessons from A1 to B1, powered by a Berlin School synthesizer engine. DE Flow makes German come alive — as sound. Built for learners from A1 to B1, the app transforms word order, verb conjugation, and grammatical gender into an audiovisual experience powered by a real-time synthesizer engine. SYNTAX SEQUENCER Build German sentences by dragging word blocks into a sequencer strip. Each word type has its own synth voice — nouns sound different from verbs, articles from adjectives. Correct sentences play as consonant melodies; mistakes trigger dissonance — tritone shifts, microtonal jitter, noise bursts. You hear the error before you read the explanation. INTELLIGENT FEEDBACK The Interference Radar detects errors rooted in your native language (English or Traditional Chinese) and shows targeted contrastive tips. Word order mistakes get dynamic, context-specific feedback: the app names the exact words you misplaced and explains the V2 rule with your own sentence. GENUS COLOR SYSTEM Every noun is color-coded by grammatical gender — Electric Blue (der), Neon Pink (die), Radioactive Green (das) — reinforced by distinct synth tones so you learn gender through both sight and sound. WORD TYPE SONIFICATION Nine word types — noun, verb, adjective, adverb, preposition, conjunction, pronoun, particle, number — each mapped to a unique waveform, frequency, and neon color. A live oscilloscope visualizes the audio in real time on vocabulary cards and during sentence playback. AMBIENT LEARNING Eight generative ambient tracks in the tradition of Berlin School electronic music accompany your study sessions. Six tracks follow the classic three-layer structure (pad, sequencer, bass). Two tracks — Nebelmeer and Zwielicht — add a fourth voice: a synthesized trumpet with a slow, swelling attack that evokes reversed tape recordings — no samples used. THREE SPEECH MODES Choose how vocabulary is spoken: Standard (clear TTS), Analog-Signal (genus tone + warm-filtered speech + echo cascade), or Synthwave-Echo (clear voice + filtered delay). NERD MODE A retro control console with ~38 tweakable parameters: filter cutoffs, ADSR envelopes, mix levels, trumpet voice parameters, and speech processing — all visualized through rotary knobs, faders, and VU meters. Hit RND to generate random settings and hear the result instantly. Reset to curated defaults at any time. WHAT'S INSIDE - 3 free lessons to get started — unlock all 45 with a single purchase - 45 lessons across A1, A2, and B1 — from greetings to B1 grammar (Konjunktiv I, Passiv, Diskursmarker) - Level filter: browse lessons by A1 / A2 / B1 - Syntax exercises, vocabulary cards, grammar explanations with contrastive notes (EN & zh-Hant) - Composita Builder with English and Chinese language parallels (handbag = hand + bag ↔ die Handtasche; 再見 = 再 + 見 ↔ Wiedersehen) - XP system, learning streaks, mastery tracking - All features included free: speech modes, ambient music, nerd mode - No internet required — fully offline - No ads, no tracking Designed for Taiwanese learners studying German for university or work in the DACH region — but welcoming to anyone who wants to experience language learning differently.

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NEW IN 2.0.0 NOW COVERING A1-B1 LEVELS! Full A1–B1 curriculum: 45 lessons across three levels. Thirty new lessons added — 15 covering A2 topics (Perfekt, modal verbs, Relativsätze, Passiv, Futur I) and 15 covering B1 (Präteritum, Konjunktiv I, Passiv with modal verbs, comparative clauses, discourse markers). Level filter in the lesson list lets you browse by A1, A2, or B1 at a glance. Two new ambient tracks — "Nebelmeer" (Ab Lydian, 50 BPM) and "Zwielicht" (C Phrygian Dominant, 58 BPM) — add a synthesized trumpet voice with a slow, swelling attack that evokes reversed tape recordings. 8 generative ambient tracks total. Nerd Mode: new Trumpet section with 4 parameters (attack, filter cutoff, resonance, mix level) — live-adjustable without restarting the track. Quiz improvements: long words no longer truncate in the answer grid. Parenthetical hints that could reveal the answer are now automatically stripped from questions and options. User-adjustable text size now applies to grammar explanations, contrastive notes, and syntax hints.

Version 2.0.0

The developer, Manfred Sablotny, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

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    Accessibility

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    Information

    Provider
    • Manfred Sablotny
    Size
    • 8 MB
    Category
    • Education
    Compatibility
    Requires iOS 16.0 or later.
    • iPhone
      Requires iOS 16.0 or later.
    • iPad
      Requires iPadOS 16.0 or later.
    • Mac
      Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English and Traditional Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 Manfred Sablotny
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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