Renetik Music Apps collage presenting the complete Android music production family.

Renetik Music Apps

Ten Android music products spanning native C++ audio, applied AI generation and a multilingual product website.

Client
Renetik Music Apps
Role
Creator, product lead, and end-to-end engineer
Engagement
March 2021 – Present
KotlinC++Android SDK/NDKJNICMakeFirebaseVuePress 2Vue 3TypeScriptViteNode.jsEspressoUI AutomatorJUnitCloud TasksElevenLabsDeepSeek


Challenge

Musicians need responsive tools for recording, mixing, looping, sequencing, MIDI control, and live performance, together with clear product information and practical documentation that makes a large app family approachable.

My Role & Ownership

Own product direction, roadmap, priorities, UX, architecture, implementation, budgets, dependencies, risks, releases, support, documentation, analytics, and feedback-driven iteration across the full product system: Android applications, reusable Kotlin modules, the C++ audio engine, Firebase services, automated tests, and the VuePress website.

Delivery & Engineering

  • Built the current Music Studio, Audio Mixer, Audio Recorder, Audio Looper, Metronome, MIDI Controller, MIDI Sequencer, Piano, Guitar, and Drums applications from shared Kotlin foundations.
  • Designed C++ and JNI audio paths for real-time DSP, multitrack playback, recording and overdubbing, effects, sequencing, metronomes, MIDI, instruments, routing, and export.
  • Consolidated playback around a master audio transport with phase anchors, drift and gap recovery, corrective crossfades, restart and seek handling, and synchronization and soak tests.
  • Connected Firebase services, Crashlytics, storage, analytics, content delivery, and release-support tooling while maintaining free and full product variants.
  • Implemented ElevenLabs audio and DeepSeek musical-sequence generation across Kotlin workflows and Firebase services, with authenticated product accounts, task queues, durable jobs, credit reservations and settlement, verified purchases, reconciliation and spending limits.
  • Deployed generation backend components and validated provider execution, credit accounting and store purchase configuration through live smoke tests, automated tests and operational checks.
  • Extended MIDI event queues, controller learning and touch behavior, audio output reconnection, transport seek/wrap recovery, native dependency builds and release/screenshot tooling.
  • Built the VuePress 2 and Vite website with custom Vue layouts and components, product pages, tutorials, optimized WebP media, Google Analytics, canonical URLs, sitemap behavior, redirects, and build validation.
  • Integrated the generated Music Apps site below /app/ in the combined renetik.com release while keeping the Android, web, and portal source histories independent.

Result

The work produced ten current Android music apps with at least 170K combined public Google Play installs as of 2026, backed by a deployed product and support website whose current build validates 49 generated HTML pages.

Highlights

Full ownership across product direction, native audio, applied AI, mobile engineering and web delivery.
Ten focused products share a modular Android and native-audio foundation without losing distinct workflows.
The public website turns product engineering into discoverable pages, documentation, media, support, and measurable release infrastructure.

Screens & Demos