Memdex 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

Turn every AI conversation into reusable local memory
Memdex is a innovative Chrome extension designed to enhance AI interactions by turning every conversation into a reusable, encrypted local memory. It seamlessly captures chats across popular AI platforms like ChatGPT, Claude, and Gemini, storing the data securely on the user's device via IndexedDB—ensuring privacy and data control. The tool highlights relevant past interactions within your prompts, similar to Grammarly's underlining feature, making it easy to inject relevant context with a single click. Its core appeal lies in helping users build a personalized, efficient memory bank for ongoing AI work, whether for research, content creation, or development projects. The free tier allows access to the 10 most recent chats, while a pro version offers unlimited storage, catering to both casual users and power users who need comprehensive memory management.
Pros
- Secure local storage with encryption, ensuring user privacy
- Easy to use with one-click injection of relevant chat history
- Supports multiple AI platforms like ChatGPT, Claude, and Gemini
- Free tier provides valuable memory management for casual users
- Enhances productivity by making conversation context reusable
Cons
- Limited free storage (10 chats) may not suit heavy users
- Requires Chrome browser extension, which may not appeal to all users
- Potential learning curve for managing and organizing stored chats
Best for
- • Reusing relevant AI chat history for research or content development
- • Building a personal knowledge base from multiple AI conversations
- • Improving AI prompt accuracy through context injection
- • Streamlining repetitive tasks with quick context recall
Pricing: Likely operates on a freemium model, offering a free plan with limited chat storage and a paid Pro plan for unlimited memory management. Exact pricing details are not specified but are expected to start around a modest monthly fee for enhanced features.

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.