# DE Flow — Learn German Through Sound > Learn German Through Sound (iPhone/iPad app by Manfred Sablotny.) - Source: https://appshunter.io/ios/app/de-flow/id6759237737 (this page in markdown: same URL + `.md`) - Developer: [Manfred Sablotny](https://appshunter.io/developer/1704998794) - Category: Education, Music - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 16.0 · 8 MB - Languages: American English, Chinese (Traditional, Taiwan) - Released: 2026-02-25 - Data updated: 2026-08-13 - User reviews in markdown: https://appshunter.io/ios/app/de-flow/id6759237737/reviews.md ## What is DE Flow? 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. ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | DE Flow Premium | $4.99 | one-time | ## Version history (last 4 releases) ### 2.0.1 — 2026-06-16 NEW IN VERSION 2.0.1 German Voice Check • If no German voice is installed on your device, DE Flow now tells you up front — with a one-time launch hint and a status row at the top of Settings › Speech. The Standard, Analog Signal, and Synthwave Echo modes will all sound right as soon as you add a voice via Settings › Accessibility › Spoken Content › Voices › German in iOS. ### 2.0.0 — 2026-03-30 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. ### 1.1.0 — 2026-03-05 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. ### 1.0.0 — 2026-02-25 No release notes. ## Apps similar to DE Flow | App | Rating | Price | Category | | --- | --- | --- | --- | | [ThinkBetter: Critical Thinking](https://appshunter.io/ios/app/thinkbetter-critical-thinking/id6459831884) | 4.3 (6) | Free | Education | | [Play System Sounds](https://appshunter.io/ios/app/play-system-sounds/id1498349041) | 5.0 (2) | Free | Education | | [Micro Expressions](https://appshunter.io/ios/app/micro-expressions/id1402242779) | 4.4 (5) | Free | Education | | [How to Say: Learn Languages AI](https://appshunter.io/ios/app/how-to-say-learn-languages-ai/id6503682046) | 4.8 (24) | Free | Education | | [HyperLingua](https://appshunter.io/ios/app/hyperlingua/id6773765162) | 4.8 (43) | Free | Education | | [Little Streaks](https://appshunter.io/ios/app/little-streaks/id1311107479) | 4.7 (22) | Free | Education | ## More apps by Manfred Sablotny - [THU-Deutsch](https://appshunter.io/ios/app/thu-deutsch/id6473107181) - [German Word Hunts](https://appshunter.io/ios/app/german-word-hunts/id6744044590) - [Hiragana Word Hunts](https://appshunter.io/ios/app/hiragana-word-hunts/id6744572843) - [WiseWordsDE](https://appshunter.io/ios/app/wisewordsde/id6746636779) - [Living German Stories](https://appshunter.io/ios/app/living-german-stories/id6747738958) - [FalseFriends DE](https://appshunter.io/ios/app/falsefriends-de/id6748107521) All apps by Manfred Sablotny: https://appshunter.io/developer/1704998794 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-13.*