Japan startups

A modern, AI powered newsletter service. Build a membership community that connects with your followers and funds your best creative work.

SaaS for the most successful writers on Substack & the #1 Substack Directory that helps readers, brands, and writers discover top-performing newsletters.

Japanese AI flashcard

AI checks documents like invoices and orders first, showing exactly where comparisons were made, reducing manual checking time significantly.

Mobayilo | Make International Calls Directly From Your Browser

当社のサービスは、古い写真に秘められたたくさんの物語を蘇らせることを目的としています。AI技術と人工精細化調整を駆使し、写真の修復と映像化を行います。これにより、大切な思い出を新しい形で保存し、未来に伝えることができます。ユーザーは、劣化した古い写真を送るだけで、かつての鮮やかな瞬間を再び楽しむことができます。このサービスは、個人の大切な思い出を守り、家族や友人と共有するための理想的な手段です。

YT-MarkerはYouTube動画のURLからAIがタイムスタンプを自動生成するサービスです。有料プラン申込時にサブスクリプション請求が発生します。

Saturn is an AI-powered back-office automation platform for Japanese SMBs. It reads invoices, purchase orders, and quotes from PDFs and Excel files, then automates data entry, document generation, and CSV exports across Japanese SaaS tools like COREC and freee. Think "Zapier for Japanese SaaS" — but spreadsheet-native and AI-first. No more manual copy-paste between systems.

NEURON is an AI decision system that captures decisions and their reasoning to align teams from strategy to execution. It turns fragmented signals from tools, user feedback, and analytics into clear, traceable decisions, helping product teams prioritize effectively and ship what truly matters.

3rd party for note.com ( blog tool in japan )

Automatic journaling from your daily activity. Google Calendar, Todois, Slack, GitHub → diary. No writing required.

Software as a service that helps users track their work achievements and generate brag documents to better succeed during performance reviews.

Instagen is an AI tool that generates high-quality images and videos from text prompts.

Anicca: AI Agent for Behavior Change.

Estimate offsite costs in minutes, not spreadsheets.

We are a team of hospitality enthusiasts and technologists on a mission to transform the in-room guest experience. iHotelDigital provides smart concierge tablets that help hotels delight guests while streamlining operations.