Citra AI 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

Create Your Project Memory, Generate Insights and Documents.
Citra AI is an innovative SaaS platform designed to help teams and organizations streamline project management and knowledge retention. By enabling users to build a comprehensive project memory within the Citra Vault, it allows the uploading of various file types such as PDFs, spreadsheets, and documents, creating a unified source of truth. This central repository supports dynamic updates—when underlying files are modified, associated documents and insights update with a single click, ensuring everyone stays aligned with the latest information. Its powerful features include generating presentations, reports, and answering project-related queries effortlessly. Additionally, Citra AI offers advanced visualization tools like mindmaps and knowledge graphs, empowering users to explore data creatively and analytically. Its enterprise-grade security with a private air-gapped system makes it suitable for sensitive and large-scale organizations. With a focus on productivity, design, and research, Citra AI aims to revolutionize how teams manage and leverage project knowledge in a collaborative environment.
Pros
- Centralized project memory with easy file uploads and updates
- Automatic synchronization for living documents
- Advanced visualization tools including mindmaps and knowledge graphs
- Supports creative design and detailed analytics
- Enterprise-grade security with private air-gap system
Cons
- Limited user reviews and community feedback on ProductHunt
- Potential learning curve for complex features
- Uncertain pricing details, which may impact smaller teams
Best for
- • Managing comprehensive project documentation and knowledge bases
- • Generating real-time reports and presentations from project data
- • Collaborative research and data analysis for teams
- • Creating visualizations like mindmaps and knowledge graphs for strategic planning
Pricing: Likely operates on a subscription-based model, potentially with tiered plans for different enterprise needs. Specific pricing details are not publicly available, but the focus on enterprise security suggests custom or higher-tier plans.

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.