Stop starting over.
Today's AI memory is rented — locked to one provider, living in their cloud. Memrith gives you one you own: the continuity layer for AI — a local, editable model of your work and thought that grows across months and years. Your AI draws on it to answer in context, and it carries with you when you switch models. You stay in charge of what it remembers. The model can change. Your memory doesn't. Switch providers, switch models, even run a local one — your continuity stays intact.
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Rent the intelligence.
Own the memory.
The model you use is a commodity — you'll rent it, and swap it for a better one. The memory you build is the durable asset. With Memrith it's a file on your machine: editable, exportable, never trained on, and yours to keep, even if we disappear. Most "AI memory" is rented inside someone's cloud. This isn't.
The longer it remembers,
the more it knows.
Most software is at its best on day one. Memrith is the opposite. The depth is the product, and it compounds because you keep showing up. Day one, it knows nothing. A year in, it knows the arc.
Connect your AI key.
You write your first entry, or upload the documents that matter. Memrith starts reading. There's nothing to configure and no schema to design — just things you've already thought about, going in.
Memrith has read 90 days of you.
Your active projects, the people who recur, the questions you've been chewing on. The AI you talk to draws on all of it instead of meeting you fresh every time you open a window.
Memrith holds the arc.
The things you were working on in February that you finished in July. The question you asked in May that you answered in October. Continuity you own — not rented from one provider, and not lost the day you switch models.
Notes are inputs.
Understanding is the output.
Most apps store the things you write. Memrith reads them and builds something new — a long-running, editable model of what you've thought, decided, and learned. The memory is the product. The chat is just one way to talk to it.
Every entry, document, and conversation adds to a single evolving model — not isolated notes, not a chat history that resets. The AI reads your past before it answers your present.
The AI extracts memories from your writing, but they aren't sacred. Open any memory, rename it, lock it, merge it with another, or delete it. Your understanding is the source of truth — not the AI's guesses.
Every memory shows which entry, upload, or conversation produced it. No black-box claims. No invented context. You can always ask "why does it think that?" and get a real answer.
Beyond personal use: dedicated memory for research, books, consulting engagements, and other long-running work. Each one is its own context — its own sources, its own understanding, its own continuity over months.
Personal memory.
Project memory.
Memrith holds one or several long-running contexts at once — your life, a book you're writing, a research thread, a consulting engagement. Each has its own memory that builds over time. You move between them; they don't bleed into each other.
Continuity over time
Builds an evolving understanding of you — your values, decisions, patterns, the people who matter. Inputs are things you write; the memory is your life, accumulated and connected.
- Free-form entries — no templates, no friction
- Memories, concepts, and themes extracted with sources
- Weekly reflections that trace patterns over time
- Conversations grounded in your real history
Operational understanding
Builds an evolving understanding of a project — its sources, its themes, its open questions. For research, long-running work, and anything that outlasts a single conversation.
- Documents and notes as primary input
- Themes surfaced from across multiple sources
- Cross-source connections in the memory map
- Chat that knows the whole project, not just the prompt
Memory built together.
Owned by you.
Memrith treats memory as a collaboration. The AI proposes — you decide what stays, what gets corrected, and what evolves. Continuity compounds because the system remembers, and you keep it honest.
Whatever you'd normally write down or collect — journal entries, PDFs, documents. Here it's raw input the AI reads, not a file you keep and maintain.
Concepts, memories, themes — each linked back to the input it came from. You can see exactly what informed every claim.
Rename, lock, merge, delete. The memory evolves as a collaboration between you and the AI — not an autonomous process you have to trust blindly.
Anything you chat about pulls from the full memory — not just the current session. What this conversation produces gets folded back in, so the next one starts where this one ended.
Your memory.
Your keys.
Your machine.
Local-first isn't just about privacy — it's about ownership of the thing you've built. The memory format is AI-readable and exportable, so the understanding you accumulate is portable to any AI, any time. If you stop using Memrith, your memory leaves with you. AI calls go directly from your device to the provider you choose, using your own key.
Export your entire memory as structured JSON, Markdown, or text — a single file that any AI can read. Migration isn't an afterthought; it's a guarantee.
Memrith uses your personal AI provider key. You pay the provider directly based on actual usage. No Memrith subscription, no recurring app fee.
No Memrith accounts. No cloud sync. No telemetry collected by Memrith — crash reporting is strictly opt-in and off by default. AI calls go directly from your device to your chosen provider — subject to that provider's own privacy policy. Your memory is never used to train Memrith or sold to third parties.
Free memory is locked in.
Yours shouldn't be.
ChatGPT and Claude remember you now — but only inside their own walls, only as facts, and never as a file you own. That's the difference.
| ChatGPT memory |
Claude memory |
Memrith | |
|---|---|---|---|
| Works across providers | OpenAI only | Anthropic only | Any provider |
| Edit or delete each memory | Partial | Partial | ✓ Full control |
| Keeps the reasoning, not just facts | ✗ | ✗ | ✓ |
| Stored locally — you own the file | ✗ | ✗ | ✓ |
| Export everything, anytime | ✗ | ✗ | ✓ JSON / MD / TXT |
| Never used for training | Opt-out | Opt-out | ✓ Never |
Based on each provider's published memory behavior as of 2026. Why this isn't a second brain → · See every AI memory tool compared →
One purchase.
Yours forever.
Buy Memrith once, install on your Mac or Windows machine, and connect your own AI key. No subscription, no usage limits we control — just the app, plus updates.
What's included
- The Memrith desktop app for macOS & Windows
- Free updates within the current major version (all 1.x releases)
- Project mode + journal mode, both fully unlocked
- Fast local search across your memory, entries, and conversations
- Activate on up to 2 of your own machines (personal-use licence)
- Email support from the developer
Pay once, own the app. Bring your own AI key — pay your AI provider directly for usage.
- Instant licence delivery
- Activate up to 2 machines
- 60-day money-back guarantee
- Secure checkout via Polar
✓ 60-day money-back guarantee — try it risk-free
Powered by Polar. Receipt + licence key arrive instantly by email.
You own the app.
You own the keys.
You own the memory.
Memrith is a one-time app purchase — no subscription, no recurring app fee. AI calls run on your own provider key, so you pay the provider directly for the usage you actually do. The memory itself stays on your machine, exportable at any time.
Pay once when you buy Memrith. The app is yours — no subscription, no recurring fee from us.
Connect your preferred AI provider — Anthropic, OpenAI, OpenRouter, and more. Switch any time in Settings. New to API keys? Step-by-step setup →
AI usage is billed by your chosen provider based on actual API calls — typically cents per day for normal personal use. Memrith never takes a cut.
Start with memory
that compounds.
Memrith is in closed beta — we're working through early feedback before opening downloads to everyone. Drop your email and you'll be first to know when persistent AI memory is available for your machine.
By submitting you consent to occasional launch + product updates and agree to the Privacy Policy. Emails delivered via Formspree (U.S.). Unsubscribe in every message.