Tools
All Tools
A focused index of practical tools built for daily work, learning, collaboration, and planning.
Settli
Settlement ToolSmart group payment settlement. Automatically finds the optimal transfer plan for complex bill splits.
Optimized SettlementWeighted SplitQR Share
Open toolKaimono
Shopping ListSmart shopping lists with budgets, categories, sharing, and recurring item reminders.
Budget TrackingRecurring ItemsQR Share
Open toolKuizu
Quiz ToolMultiplayer quiz platform with 400+ questions, daily challenges, custom quizzes, and live scoreboards.
Multiplayer RoomsDaily ChallengesCustom Quizzes
Open toolScore Tracker
Group scoreboardTrack final scores and cumulative rankings for mahjong, golf, board game nights, and recurring groups.
Daily scoresCumulative totalsCode sharing
Open toolMD Preview
Markdown ViewerDrag & drop or paste markdown files for instant full-screen preview with GitHub Flavored Markdown support.
Drag & DropClipboard PasteGFM Support
Open toolRailway Planner
Fictional Rail ToolPlan fictional railways from national trunk lines down to zoomed station layouts for all 47 prefectures.
All prefecturesService patternsCost simulation
Open toolTodo
AI Task ManagerExtract tasks from screenshots or text, then manage personal and group todo lists with smart input.
Image extractionText cleanupGroup sharing
Open tool