GalaxyBrain vs TimeOS 2.0: Bill your hours in Notion.
Side-by-side comparison of features, pros & cons, pricing, and community votes (2026).
🏆 TimeOS 2.0: Bill your hours in Notion. leads with 109 upvotes
An information operating system powered by local files
GalaxyBrain is a powerful local-first knowledge management system designed for users who need a highly interconnected and customizable workspace. It combines the flexibility of a programming environment with the familiarity of a document editor, allowing users to create pages with variables, formulas, and live references that stay synchronized automatically. All data is stored as structured JSON files on the user's machine, ensuring privacy and control. Its built-in HTTP API and MCP tool enable seamless integration with AI models like Claude Code or Codex, making it ideal for developers, researchers, and productivity enthusiasts who want to build custom workflows without relying on cloud-based solutions. Unlike traditional note-taking apps, GalaxyBrain emphasizes a programmable, interconnected approach to managing information, making it suitable for complex projects and knowledge systems.
Pros
- Local-first storage ensures data privacy and control
- Supports live references and automatic synchronization between pages
- Built-in API and MCP tools enable custom integrations with AI models
- Flexible environment combining programming and document editing
- No account required, simplifying setup and use
Cons
- Steep learning curve for users unfamiliar with programming concepts
- Requires manual setup and local storage management
- Limited community support compared to mainstream tools
Best for
- • Creating interconnected project documentation and wikis
- • Building custom AI-powered workflows for research or content creation
- • Managing complex data relationships within personal or team knowledge bases
- • Developing programmable templates and formulas for automation
Pricing: Likely operates as a freemium model with free access for core features. Advanced functionalities, API access, or integrations may require paid plans or licenses. Exact pricing details are not publicly specified but are probably subscription-based or one-time purchase.
Work your tasks. Bill your clients with confidence.
TimeOS 2.0 is a seamless productivity and invoicing solution built directly into Notion, designed for freelancers, consultants, and small teams who want to streamline their workflow and billing process. By integrating time tracking with a dedicated invoicing companion app, users can log work sessions effortlessly and generate professional invoices with just a few clicks. The recent 2.0 update enhances this experience by allowing users to load their tracked sessions, generate PDF invoices, and customize them before sending clients. Its tight integration within Notion makes it an attractive choice for those already immersed in the Notion ecosystem, offering a unified platform for task management, time tracking, and billing. What makes TimeOS 2.0 particularly unique is its ability to close the loop—from tracking hours to invoicing—eliminating the need for multiple tools and reducing administrative overhead, all within a familiar workspace.
Pros
- Deep integration with Notion for seamless workflow management
- Simple process to convert tracked hours into professional invoices
- Customizable invoice templates for branding and client needs
- One-click PDF generation and easy client sharing
- Ideal for freelancers and small teams seeking all-in-one productivity and billing
Cons
- Limited information on pricing structure; likely subscription-based
- May require some initial setup and familiarity with Notion
- Could lack advanced invoicing features found in dedicated billing software
Best for
- • Freelancers tracking billable hours for multiple clients
- • Consultants managing project-based work and invoicing
- • Small creative agencies handling client work within Notion
- • Solo entrepreneurs needing integrated task management and billing
Pricing: Likely follows a freemium model with basic features free and premium options available; exact pricing details are not specified but expected to be subscription-based, possibly starting around $10-$20 per month.