Marilys Works

Independent Software Studio

A one-person studioshipping AI-native software.

AI・データ・アプリ。設計から実装、運用までをひとりで。AI, data and mobile products — designed, built and maintained by one person.

Explore products

  • 2 products shipping
  • iOS · Web
  • Independent since 2021

A studio of one.

Marilys Works is an independent software studio. AI, data and mobile technologies are used to design and build small, useful software — then keep it running for years. The studio also develops automatic speech recognition models and builds datasets.

Marilys Works は、ひとりで運営する独立系のソフトウェアスタジオです。AI・データ・モバイルの技術を使って、小さくて役に立つソフトウェアを作り、長く運用し続けることを軸にしています。音声認識(Automatic Speech Recognition / ASR)モデルの開発や、データセット(dataset)の構築にも取り組んでいます。

Studio
Marilys Works
Run by
Marilys Lee
Role
Indie developer · Mobile / Data / AI
Based in
Tokyo · remote

Areas of focus.

  • Speech Recognition / Datasets

    Developing automatic speech recognition (ASR) models and building datasets.

  • AI / LLM

    Retrieval-augmented generation, fine-tuning, agentic workflows and LLM application design.

  • Data

    Analysis and modelling with Python and DuckDB — from raw logs to something worth looking at.

  • Mobile

    Native iOS apps built to work offline first, with data that stays on the device.

  • Web

    TypeScript and Next.js on the edge, with Postgres behind it.

  • Automation

    Event-driven workflows and scheduled jobs that quietly keep products running.

What I'm working on.

Shipping

  • 音声認識モデルの開発・データセットの構築ongoing
  • finny v1.0.0 を App Store でリリース2026-05-08
  • yoritto Web 版を公開、iOS / Android を準備中ongoing
  • finny の Android 版を準備中next

Exploring

  • LLM applications
  • Local inference
  • Personal software
  • Data visualisation

Have something interesting to build?

プロダクトへのフィードバック、コラボレーションのご相談、雑談まで。 返信までに数日いただくことがあります。

info@marilysworks.com