You've just spent five minutes explaining your job title, your company's product, and your preferred writing style to Claude. Tomorrow you open ChatGPT and do it all again. Next week, a different tool, same ritual.
Memory Sync is a Chrome extension designed to break this cycle. You build a profile once - who you are, what context an AI needs to be useful to you - and the extension injects it automatically into new conversations across different AI platforms. Your context profile lives locally in the extension and gets inserted at the start of each new chat, so the AI isn't starting cold.
This is not syncing memory between AI systems. That would require API integrations none of the major AI companies provide in a unified way. Memory Sync is closer to an automatic paste of your personal system prompt - simpler than it sounds, but genuinely useful if you run multiple tools.
The underlying problem is real. ChatGPT has native memory, Claude has Projects with persistent custom instructions, Gemini has workspace context - but these features are siloed by design. Your ChatGPT memory doesn't transfer to Claude, and your Claude Project setup doesn't follow you into Perplexity. Power users who move between tools either accept that each one has a partial, inconsistent picture of who they are, or they maintain their own copy-paste system manually.
Memory Sync is a free Chrome extension, available now on the Chrome Web Store. It's an indie project rather than a funded startup, and the scope is deliberately narrow. For anyone running two or more AI tools as part of a daily workflow, the math is straightforward: configure once, save the re-introduction every session.