Subgrapher 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

P2P desktop app for building, browsing, & sharing knowledge
Subgrapher is an innovative, open-source SaaS and AI-powered platform designed for knowledge sharing, organization, and communication. It combines multiple functionalities into a single desktop application, including a local-first AI workspace, email client, personal organizer, and decentralized message sharing system. Its unique approach allows users to build, browse, and share research and information seamlessly, emphasizing privacy and decentralization. Additionally, Subgrapher offers a remote interface for reasoning over your work via Telegram with local AI models, making it highly versatile for researchers, developers, and productivity enthusiasts seeking a customizable, privacy-focused environment. As an open-source project still in progress, it invites community collaboration to enhance its features and capabilities.
Pros
- Open source with community-driven development
- All-in-one platform integrating AI workspace, email, and messaging
- Decentralized knowledge sharing enhances privacy
- Local-first AI models for secure, on-device processing
- Flexible remote interface via Telegram for reasoning and automation
Cons
- Still in development, may lack some features or stability
- Potentially steep learning curve for new users
- Limited user base and community support at this stage
Best for
- • Sharing and collaborating on research with peers
- • Personal knowledge management and organization
- • Secure, decentralized messaging within teams
- • Using local AI models for reasoning and automation
Pricing: As an open-source project, Subgrapher is likely free to use, with potential paid plans or hosting options in the future as development progresses.

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.