DE Flow

Learn German Through Sound

Free · In‑App Purchases · Designed for iPad

Learn German like you've never heard it before. DE Flow turns grammar into sound — with a real-time synthesizer engine inspired by the Berlin School of electronic music. DE Flow makes German come alive — as sound. Built for A1 learners, 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 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 Six generative ambient tracks in the tradition of Berlin School electronic music accompany your study sessions — warm pads, slow arpeggios, and pulsing bass layers that keep you focused without distraction. 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 ~34 tweakable parameters: filter cutoffs, ADSR envelopes, mix levels, 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 15 with a single purchase - Syntax exercises, vocabulary cards, grammar explanations - Composita Builder with English language parallels (handbag = hand + bag ↔ die Handtasche) - 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 1.1.0 Word Type Audio Identity Every word type now has its own sound signature. Nouns, verbs, adjectives, and 6 more types each play a distinct waveform and frequency — so you can hear the difference between a noun (sawtooth, 261 Hz) and a verb (square wave, 440 Hz). Word type badges on vocabulary cards show color, waveform glyph, and label at a glance. Live Oscilloscope A real-time oscilloscope now visualizes audio as animated waveforms — on vocabulary cards during speech playback and in the Syntax Sequencer during sentence replay. Watch the sound as you hear it. Syntax Sequencer Audio Feedback Placing and removing word blocks now triggers audio cues based on word type. Tap Play to hear your sentence as a synth sequence with synchronized visual highlighting. Correct sentences play consonant melodies, incorrect ones trigger dissonance. 2 New Ambient Tracks "Wellenreiter" — an ethereal, floating soundscape in G minor with ultra-slow filter sweeps and the softest waveform pairing (sine + triangle). "Nachtschicht" — a nocturnal groove in F# Dorian. The warm triangle pad and unique Dorian harmonics evoke late-night concentration under neon lights. 6 generative ambient tracks now available in Settings.

Version 1.1.0

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.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    • Seller
      • Manfred Sablotny
    • Size
      • 7.4 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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