Projects

A collection of products and tools I have built and published, centered on generative AI, Python, and web applications designed for real ongoing use.

UtilityPaid

Ouchi Wallet

Local-first iOS/iPadOS ledger app for family allowances and points. Manage parent and child accounts, wallets, transaction history, auto charges, stamp cards, and ZIP backups on device.

iOSiPadOSExpoReact NativeSQLite

Support Privacy

EducationPaid

From One Illustration to Talking Short Videos | How to Mass-Produce AI Character Videos

A Brain learning material for producing talking AI character short videos from a single character illustration by connecting AI voice, subtitles, and video generation.

AIVideoVoiceSubtitlesBrain

Demo

UtilityPaid

Event POS Register

Local-first iOS POS register app for event vendors and small shops. Manage products, checkout, receipts, sales summaries, CSV/PDF export, ZIP backup, and AirPrint.

iOSiPadOSExpoReact NativePOS

Support Privacy

UtilityPaid

LabNote Chem

Electronic lab notebook app for iOS to manage chemistry experiment records, reagents, inventory, equipment, molecular structures, and calculation notes.

iOSiPadOSSwiftChemistry

App Store Support Privacy

AIPaid

Banana-muffin AI

A browser-based generative workspace with switchable models like nano-banana (Google) and fal's Seedream. Create high-quality images from text/image inputs in minimal steps, then seamlessly convert them to videos and 3D models in an integrated workflow.

AIReactTypeScript3DVideo

Demo

AIOSS

Banana-muffin AI OSS

Complete workflow from images to videos to 3D. Open-source version of the Banana-Muffin AI multimodal generation platform. Start instantly with your Google account.

AIReactTypeScript3DVideoOSS

GitHub

AI

Python Share

Next-generation code-sharing SNS for sharing, discovering, and collaborating on Python scripts.

PythonReactTypeScriptSNS

Demo

AI

ProcessELN

AI-powered electronic lab notebook for chemists, designed for complete workflows from research to development to manufacturing.

ReactTypeScriptAIChemistry

Demo

AIOSS

ProcessELN-OSS

Open-source version of ProcessELN, an AI-powered electronic lab notebook for chemists covering research, development, and manufacturing workflows.

ReactTypeScriptAIChemistryOSS

GitHub

Education

ITPass Master

Online learning platform for efficiently studying for the IT Passport exam.

ReactTypeScriptEducation

Demo

Education

GPT English Coach

English learning assistant tool using ChatGPT Advanced Voice Mode (separate subscription required).

ChatGPTReactTypeScriptEducation

Demo

AI

Voice-to-Articles

AI app that automatically generates high-quality articles from voice input. Combines Gemini and Claude for more natural text generation.

GeminiClaudeReactTypeScript

Demo

AI

ReadLater

Automatic summarization tool for English articles. Efficiently collect overseas tech information and support your learning.

PythonAIReact

Demo

UtilityPaid

ShortCutLauncherAll

Tool for centrally managing shortcuts to multiple web apps and sites, with batch launching capabilities.

ReactTypeScript

Demo

AI

promptalyst

Web memo app for recording and organizing prompts with direct access to AI generation.

ReactAIMarkdown

Demo

AIOSS

novelpost

Novel posting site with AI assistance. AI-powered writing support enhances the creative writing experience.

ReactAITypeScript

Demo GitHub

Utility

Video Frame Extractor

Tool for capturing specific frames from videos as images.

JavaScriptVideo Processing

Demo

Utility

Timezone Converter

Easily convert time zones around the world.

JavaScriptUtility

Demo

GameOSS

Dragon Game

2D auto-scrolling action game featuring dragons. Dodge enemies and clear three stages!

ReactTypeScriptGame

Demo GitHub

Game

Golden Eye Style FPS

Authentic GoldenEye-style FPS game. Clear three missions (Facility, Archives, Bunker) and defeat enemies!

JavaScriptWebGLGame3D

Demo

AI

Starflight Girls

Producing the AI idol project "Starflight Girls". Managing a virtual idol group powered by cutting-edge AI technology.

AIVirtual IdolProducer

Demo