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A cross-device Markdown editor with a free writing core and an optional lifetime Pro upgrade.

A shareable infinite drawing board for handwriting, tutoring, diagrams, and PDF markup.

Apple-device budgets, bill forecasts and exportable account reports

Sell appointments, service bundles, and events through a booking flow linked to your calendar.

Hybrid retrieval engine with vector search and managed inference in one API.

SVG drawing with editable paths, shapes and live effects

Trip expense tracking with offline entry and shared travel balances

Shared budgets with custom categories and transaction entry

Research App Store keywords and follow their positions from a Mac application.

Research app-store keywords and manage listings, localizations and ASO performance.

Searchable purchase history and spending insights for iPhone and iPad

Configurable personal finance files for Mac and iOS

Public-domain small-scale map data

Share a family calendar with household lists and meal planning.

Manage calendar events and tasks in BusyCal across Mac and iPhone.

Online invoice maker for freelancers, contractors and small businesses.

Collect highlights from books, articles and podcasts, then review them daily

Mac automation tool that connects voice or text commands to AI models and macOS actions.

Open-source proxy that secures AI API keys in mobile apps without a backend.

A native macOS code editor with project tools, Git integration, and an extension system under active development.

AI writing app for Mac that helps with emails, Slack replies, Jira tickets, proofreading and document chat.

Realtime AI drawing app for iPhone and iPad that follows your strokes.

Layered Apple-device painting with masks and imported brush settings

Weight-entry charts with moving trends and conditional forecasts