The AI Chrome extension for ChatGPT, Claude, Gemini, and DeepSeek. Manage your AI context, take online notes, and sync across every device — with contextual AI summarization built right in.
Works as a ChatGPT extension, Claude chatbot saver, and Gemini capture tool in one. Save conversations from any major AI and inject that context into any other model — no copy-pasting.
Use SiderMem as a full online note taking tool — save web selections, clipboard contents, and files. Cloud sync keeps your notes and AI context available across every device.
Turn any private memory into a clean public webpage with one click. Web share your AI insights, research notes, or knowledge anchors with a single link.
Native buttons injected into ChatGPT, Claude, and Gemini for instant, structured conversation cloning.
Built-in contextual AI processing to summarize or reformat long chat logs, saving AI context tokens and boosting readability.
Publish your memories as clean Markdown webpages. Perfect for sharing context anchors with teammates or friends.
Native support for 7 languages: English, Chinese, Arabic, French, German, Spanish, and Korean. Manage your memories in your preferred tongue.
No complicated registration. Login securely via Email + OTP in seconds.
Export your entire memory library as a structured Markdown file anytime.
Autonomously clear local and cloud data. We believe you own your memories.
End-to-end sync with Supabase and Chrome local storage security standards.
All plans include unlimited local storage. Start free, upgrade when you need more.
Install the extension and open the side panel. Go to Account, pick a plan, and you'll be taken to a secure Stripe checkout. Payment is confirmed instantly — your plan upgrades right away with no restart needed.
Open the extension, go to Account → Manage / Cancel. This opens the Stripe Customer Portal where you can switch between Pro and Ultra at any time. Any price difference is automatically prorated for the current billing period. If you downgrade, your existing cloud data stays put — you'll just need to trim your memory count to resume syncing if you're over the new plan's limit.
Go to Account → Manage / Cancel in the extension to open the Stripe portal and cancel with one click. Your paid features stay active until the end of the current billing period, then your account rolls back to Free. Your local data is never touched — it stays in your browser regardless.
Yes — subscriptions renew automatically on your billing date via Stripe. You'll receive a receipt email from Stripe before each charge. To avoid the next billing cycle, cancel before your renewal date.
All major credit and debit cards (Visa, Mastercard, American Express) are supported through Stripe. SiderMem never sees or stores your card details.
We generally don't offer refunds — a Free Tier is available so you can evaluate the product before committing. That said, if you forgot to cancel and genuinely didn't use any paid features during the billing period (no cloud sync, no sharing, no AI summaries), email us at support@sidermem.com and we'll review it. We want to be fair.
Cloud sync pauses once you hit your plan's memory limit — your existing synced memories remain fully accessible, nothing is deleted. Deleting any memories immediately frees up quota. AI operations pause similarly when you exhaust your monthly allowance and resume automatically on the first of the next month, or instantly if you upgrade.
No — AI Summarization and Restructuring quota resets on the first day of each calendar month. Unused operations do not carry forward.
Local memories live exclusively in your browser's IndexedDB and are completely free and unlimited on every plan. Cloud sync backs them up to our servers and makes them available across your devices, subject to each plan's quota. You can use SiderMem as a fully local tool and opt into cloud sync whenever you're ready.
Pro and Ultra users can publish any memory as a clean public webpage with one click. The memory must be synced to the cloud first. You can revoke the public link at any time — it becomes inaccessible immediately.
AI memory management means saving, organizing, and reusing the context from your AI conversations — so you don't have to re-explain your background, preferences, or prior work every time you start a new chat. SiderMem acts as a persistent AI memory layer: you capture the conversations that matter, cloud sync them across devices, and paste them back into any AI session as instant context. Think of it as giving your AI a long-term memory that survives beyond a single browser tab.
Yes — cloud sync is available on all plans (50 memories on Free, 500 on Pro, 2,000 on Ultra). Once a memory is synced, it's accessible from any device where you're logged in. Local-only memories stay in your browser's IndexedDB and are never uploaded unless you choose to sync them. Web sync is opt-in: you stay in full control of what leaves your device.
We're happy to help. Drop us a line at support@sidermem.com and we'll get back to you as soon as we can.