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DE Flow turns German grammar into sound. Every word type has its own synth voice β nouns play sawtooth at 261 Hz, verbs square wave at 440 Hz. Drag blocks into a sequencer to build sentences: correct = consonant melody, wrong = dissonance. A live oscilloscope visualizes audio in real time. Gender is neon color-coded and reinforced by distinct tones. 6 generative ambient tracks, 3 speech modes, and a Nerd Mode console with ~34 tweakable audio parameters. No ads, fully offline.
DE FlowLearn German through a real-time synthesizer engine
Manfred Sablotnyleft a comment
Hey PH! I built DE Flow because I wanted to experience what it feels like when grammar has a sound. I'm a German teacher working with Taiwanese students, always looking for interesting and efficient ways of helping learners around the world. Bringing together my passion for music and languages, I worked with Claude Code to build a real-time synthesizer engine from scratch β no audio libraries,...
DE FlowLearn German through a real-time synthesizer engine
Free, offline-capable App Store screenshot generator. Create perfectly sized screenshots for iPhone & iPad with device frames, gradient backgrounds, text overlays, and batch export. Single HTML file, no install needed. EN / DE / ηΉδΈ.
App Store Screenshot StudioFree, offline App Store screenshot generator β one HTML file
Manfred Sablotnyleft a comment
Hey everyone! π I'm Manfred, a German language instructor in Taiwan who also builds language learning apps. After submitting hundreds of App Store screenshots across twelve apps and various device sizes, I was tired of clunky workflows with Figma templates or expensive subscription tools. So, with the help of Claude Code, I built Screenshot Studio β a completely free, single-file screenshot...
App Store Screenshot StudioFree, offline App Store screenshot generator β one HTML file