Comparison

DE Flow vs Hallo Bruno

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

DE Flow

Features
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DE Flow makes German come alive โ€” 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 โ€” nouns sound different from verbs, articles from adjectives. Correct sentences play as consonant melodies; mistakes trigger dissonance โ€” 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 โ€” Electric Blue (der), Neon Pink (die), Radioactive Green (das) โ€” reinforced by distinct synth tones so you learn gender through both sight and sound. WORD TYPE SONIFICATION Nine word types โ€” noun, verb, adjective, adverb, preposition, conjunction, pronoun, particle, number โ€” 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 โ€” Nebelmeer and Zwielicht โ€” add a fourth voice: a synthesized trumpet with a slow, swelling attack that evokes reversed tape recordings โ€” 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 โ€” 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 โ€” unlock all 45 with a single purchase - 45 lessons across A1, A2, and B1 โ€” 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 โ†” die Handtasche; ๅ†่ฆ‹ = ๅ† + ่ฆ‹ โ†” Wiedersehen) - XP system, learning streaks, mastery tracking - All features included free: speech modes, ambient music, nerd mode - No internet required โ€” fully offline - No ads, no tracking Designed for Taiwanese learners studying German for university or work in the DACH region โ€” but welcoming to anyone who wants to experience language learning differently.

About

Hallo Bruno

Features
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Hallo Bruno teaches the German you'll actually say โ€” at the cafรฉ, on the tram, at the pharmacy โ€” one real-life situation at a time. No grammar drills, no cartoon gems, no subscription. MEET BRUNO Your bear coach greets you every day with a tip, cheers you through practice, and quizzes you when you're ready. 100 EVERYDAY SITUATIONS From ordering a pretzel to renting a flat: 25 themed units, 1,200+ practical phrases with native-quality audio, pronunciation guides, and word-by-word breakdowns. LEARN BY DOING โ€ข Choose, build, and type your way through varied exercises โ€” no two sessions alike โ€ข Speak into the mic and get instant, word-by-word feedback on what you said โ€ข Play the Scene: act out real dialogues, line by line โ€ข Quick Match: pair German and English against the clock โ€ข Unit tests with bronze, silver, and gold medals REMEMBER IT FOREVER Smart spaced repetition brings each phrase back right before you'd forget it. Short daily reviews lock phrases into long-term memory. Track your streak, daily XP goal, and your rise from Tourist to Local. YOURS FOREVER One purchase unlocks all 100 situations, every phrase, and all future updates. No subscription. No ads. Works fully offline โ€” learn on the plane to Berlin. Start free with the first unit โ€” At the cafรฉ, Getting around, Small talk, and Shopping. Bis bald! Terms of Use: https://kk-studio.ch/terms/ Privacy Policy: https://kk-studio.ch/privacy/

Screenshots

DE Flow4 screens
Hallo Bruno4 screens

Verdict

The call

DE Flow and Hallo Bruno are too close to call on the numbers: across 5 compared parameters โ€” price, ads, in-app purchases and device support among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. DE Flow sells 1 one-off in-app purchase and Hallo Bruno sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
DE Flow versus Hallo Bruno: the parameters behind the verdict, then further details
ParameterDE FlowHallo Bruno
PriceFreeFree
Update frequencyEvery 4 weeksโ€”
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 โ€” better17.0
Further details โ€” not scored
Size8 MB47 MB
Age rating4+4+
DeveloperManfred SablotnyKanchalika Kongyong

In-app purchases

1 purchases

DE Flow

One-time1
  • DE Flow Premium$4.99
1 purchases

Hallo Bruno

One-time1
  • Hallo Bruno$8.99

Questions

Is DE Flow free?
DE Flow is free to download, with in-app purchases available.
Is Hallo Bruno free?
Hallo Bruno is free to download, with in-app purchases available.
Do DE Flow or Hallo Bruno have ads?
Neither DE Flow nor Hallo Bruno shows ads.

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