ChatExtender

What is ChatExtender?

ChatExtender is a Mac app that wraps your own ChatGPT and Claude accounts in one private workspace. It carries a summary of long threads into fresh sessions, attaches saved notes and files to messages, and searches every synced chat. Everything is stored in a local database, so conversations never leave your computer.

Top Features:

• Session memory: hands each new chat a summary of the earlier thread.
• Attachable memory: save notes, rules, schemas, and files once, then reuse them anywhere.
• Full-text search: find any decision across all threads in a provider within seconds.

Use Cases:

• Long projects: keep a months-long writing or coding thread going without re-explaining context.
• Model switching: move work between ChatGPT and Claude while keeping one project brief.
• Decision lookup: recover a detail agreed weeks ago without scrolling through old threads.

Who Can Use ChatExtender?

• Writers and editors: keep style rules and briefs attached to every drafting session.
• Developers: reuse schemas and helper code, and search Codex and Claude Code history.
• Consultants: track findings across dozens of AI threads for different clients.

Pricing

• Trial (free, 7 days): full app access with no account needed before buying.
• License ($30 once): permanent Mac app access with no subscription or account required.
• AI accounts (paid separately): you still need your own ChatGPT or Claude account.

Pros and Cons

Pros:

• Local storage: chats, memory, and files stay in a local SQLite database.
• One-time price: a single $30 payment avoids adding yet another monthly subscription.
• Two models together: use ChatGPT and Claude side by side in one app.

Cons:

• Mac only: there is no Windows, Linux, or mobile version yet.
• Search limits: search covers one provider at a time, so you switch tabs.
• Web only: it relies on web chat interfaces and skips Claude Cowork sessions.

FAQs:

1) Does it replace ChatGPT or Claude?

No, it works with your logged-in accounts and adds memory and search around them.

2) Are my conversations uploaded anywhere?

No, everything stays in a local database, and messages go straight to your provider.

3) How does the free trial work?

Download the full app and use it for seven days without an account.

4) What are the system requirements?

You need macOS 13 or newer, plus your own ChatGPT or Claude account.

5) Can coding tools search my history?

Yes, it imports Codex and Claude Code sessions and serves search through MCP.