01 — Kids & reading 2026 · In development · 3/4 Living Tales An interactive picture book that comes alive as a parent reads aloud: speech is recognized right on the device and the illustrations move at the right moment. Ten tales in Russian and English; an iPhone app on the way, with a web demo. Fluttersherpa-onnxVosk Open → 02 — Language learning 2026 · Released · 3/4 Srpski Korak A Serbian language course from A0 to C1 with a built-in trainer: 45 modules, spaced repetition, dialogues, audio, and immersive situation lessons. JavaScriptCloudflare WorkersD1 Open → 03 — Music & AI 2026 · Released · 3/4 DrumAnalyzer Upload a song and get the drum part written down in standard notation, with playback, looping, practice levels and MIDI/MusicXML export. .NETPythonPyTorch Open → 04 — Developer tools 2026 · Released · 4/4 ChromeNiche Validate a Chrome extension idea before building it: a BUILD / TEST / SKIP verdict backed by data from 261,000+ extensions in the Chrome Web Store. PythonFastAPINext.js Open → 05 — Education 2026 · Prototype · 3/4 Serbian Road Rules: Interactive Situations A mobile textbook prototype where a traffic rule becomes a 2D scene: pick an action, watch the consequences play out, then read the explanation. TypeScriptReactCanvas 2D Open → 06 — Android & privacy 2026 · In development · 2/4 PrivacyCleaner An Android app that scans your gallery, shows what photos and videos reveal about you, and strips that metadata without re-encoding a single pixel. KotlinAndroidEXIF Open → 07 — Browser extension 2025 · Released · 3/3 LinkedIn Cover Letter Chrome extension that writes a tailored cover letter for any LinkedIn job posting from your resume in one click. JavaScriptBrowser ExtensionPython Open → 08 — Browser extension 2025 · Released · 4/4 Spotify BPM Browser extension that instantly displays the BPM (beats per minute) of any Spotify track. Perfect for DJs, musicians, dancers, and music enthusiasts. JavaScriptBrowser ExtensionSpotify API Open → 09 — Browser extension 2025 · Released · 4/4 YouTube Screenshot Extension Browser extension that allows users to capture high-quality screenshots from YouTube videos with ease. JavaScriptBrowser ExtensionChrome API Open →
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2026 Living Tales Flutter · sherpa-onnx · Vosk 3/4 In development 2026 Srpski Korak JavaScript · Cloudflare Workers · D1 3/4 Released 2026 DrumAnalyzer .NET · Python · PyTorch 3/4 Released 2026 ChromeNiche Python · FastAPI · Next.js 4/4 Released 2026 Serbian Road Rules: Interactive Situations TypeScript · React · Canvas 2D 3/4 Prototype 2026 PrivacyCleaner Kotlin · Android · EXIF 2/4 In development 2025 LinkedIn Cover Letter JavaScript · Browser Extension · Python 3/3 Released 2025 Spotify BPM JavaScript · Browser Extension · Spotify API 4/4 Released 2025 YouTube Screenshot Extension JavaScript · Browser Extension · Chrome API 4/4 Released

Browser extensions, a music transcription model, a Serbian course, and a fairy tale that listens to a child reading. Each one started as a problem in my own week.