From idea validation to your series A, one workspace with a cofounder running it with you.
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Zero-knowledge design — we care a lot about your privacy. We can't read your data.
Everything built in: Notes, Calendar, Scheduling, Sheets, Docs, and more — native tools in one workspace.
She's been there for all of it. Whether you're still figuring out the idea or chasing PMF, rewriting the deck or closing your first customer — she was there for the hunch, the failed launch, the pivot nobody saw coming. She remembers all of it.
Tell her what you're building and hang up with a workspace waiting.
Product overview video: https://cdn.shopify.com/videos/c/o/v/faeeaaad6a9c4a1faec7552bb1678ef8.mp4
Whether you're still figuring it out or already in the market, she lives inside everything you work in — your docs, emails, tasks, research — and connects them into a single mind built around your startup.
Memory graph example entities: You; Marcus · YC; Sarah Chen; Paul · Sequoia; Series A; Pitch Deck v3; Demo Day; Y Combinator; $12k MRR; 11mo Runway; Sequoia — linked as people, goals, projects, companies, events, and metrics.
You can call or text +1 (415) 915-2731 now — same thread for email, meetings, reminders, and follow-ups. She can ring you for wake-ups, nudges before calls, or when something you asked for happens (for example an email from a specific person, a booking, or a deal thread). Inbound and outbound updates roll into Memory so the full picture stays in one place.
Is the market real? Who already tried this? Where did they fail? She reads Reddit, Hacker News, X, Product Hunt, LinkedIn — every thread, every post-mortem, every signal. Then writes back like a co-founder who actually did the homework.
Sources: Reddit, Hacker News, X, Product Hunt, LinkedIn, GitHub — plus 200 sources, all cited.
Average sources per brief: 247. Citation rate: 100%. Time to answer: ~38s.
Example brief context: Notion competitor research — total raised $344M, valuation $10B peak, traffic MoM +31%; soft spot insight with corroborations; brief saved to Memory.
Corpus: 10,400 post-mortems. Operator essays: 4,200 indexed. Board decks: 1,800 read. Founder interviews: 2,600 parsed.
Illustrative pushback: User line: "I want to build a Notion competitor. The market is ready." Response headline: The market is ready. You're answering the wrong question. Notion has $344M raised and 1,200+ employees — ~370 of them engineers. Find where they are losing users, not where the press says they are winning. Pushback: Call three founders who left Notion this year. Before you write a line of code. Tags: 247 sources, YC playbook, PG essays, Zero to One.
Full spreadsheet engine — hundreds of functions, multi-sheet, real depth. Ask her for forecasts, margins, or burn and she builds it in place; tie numbers to docs and tasks so everything moves together.
Sheets preview image: https://planless.app/sheets.png
Updates, briefs, SOPs, proposals — she drafts with your numbers, tasks, and email context. Mention a metric or a client and she pulls the right thread; you rarely start from empty.
Feedback, leads, onboarding — tell her what you need and she spins up a branded, one-question-at-a-time flow. Replies land in your workspace ready to sort and act on.
Calendar lives beside the rest of your work. She can publish a booking page, adjust availability from chat, and surface bookings with context — not random holds on a siloed calendar.
She runs on Neptyn 1.0, our model from Brainsless Research Lab.
You're building a company, and she's building it with you. She has context, she has opinions, and she doesn't shy away from either. Hand her work, push back on her thinking, or get on a call at any hour. She knows everything in your workspace, learns how you operate, and never stops working.
Hand her the work and get back to building. Some days you need her to price your product, draft the landing page copy, email your first ten users, and schedule the demos. Other days you're staring at a wall with too much to do and no idea where to start. Talk it through and she breaks it down and starts handling it.
A co-founder you can actually call. Call her and talk like you would to someone with skin in the game. She listens, responds directly, and tells you what she actually thinks. Push back on her ideas, walk through a problem, rattle off tasks, ask her to dig into something. She handles everything while you're still on the line, and she remembers the whole conversation for next time.
Your numbers, inside your decisions. Your numbers live where your decisions happen. A full spreadsheet engine with over five hundred functions, multi-sheet support, and real modeling depth. Ask her to build a forecast, calculate margins, or break down your burn rate and she does it right there, no exporting, no formulas you have to figure out yourself. Reference them in docs, tie them to tasks, and watch them update as your work moves. Everything stays connected because it was all built together.
Write with your whole company in reach. You're writing investor updates, project briefs, SOPs, and client proposals all in the same week. She drafts them knowing your numbers, your tasks, your emails, everything. Mention a metric and she pulls from your sheets. Mention a client and she knows the full history. You never start with a blank page because she already knows what you're working on.
Every file you've ever uploaded, remembered. Drop a file and she reads it — PDFs, spreadsheets, documents, whatever you have. Ask about that contract from last month or the numbers buried in a deck and she answers from what she knows.
Your time, protected and booked. Your calendar and scheduling live in the same place as everything else. Tell her to set up a booking page and it's live with your branding and your rules. Adjust your availability by just telling her. Someone books and it's not just a calendar event — the booking shows up in your workspace with the full context of who they are and why you're meeting. Your whole schedule managed by a conversation.
Sends from your inbox, knows why you're sending. You're emailing investors, clients, leads, and partners all day. She writes every one knowing who you're talking to, what you've discussed, and what you're working on together. She sends from your actual Gmail with attachments, cc, bcc, everything. You can edit the draft or just hit send — it already sounds like you wrote it.
Ask, collect, and act on every response. Need to collect feedback, qualify leads, or onboard a new client, tell her and she builds a beautiful form with your branding, one question at a time, no ugly field walls. Send it out and every response lands right in your workspace, ready to read, sort, and act on without ever leaving where you're already working.
Zero-knowledge · AES-256-GCM. How the vault works
01 — Encrypted in your browser: Data is encrypted client-side with AES-256-GCM before it ever leaves your device. The key never touches our servers.
02 — Zero-knowledge architecture: We have no technical ability to access your tasks, docs, emails or any workspace content. Not a policy — a fact of the architecture.
03 — Inference only, no raw storage: AI inference runs on your encrypted context in-session. Raw content is not persisted on any external server after the session ends.
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Planless is built by Brainsless Research Lab (https://brainsless.com). Our first published paper — Attention Is Not Enough (BRL-2026-05), by Mohammad Alsufi and Connor Scott — identifies the structural root cause of alignment failures in long AI sessions (Constraint Routing Failure) and proposes Governed Multi-Stream Attention (GMSA) as the architectural fix. Neptyn 1.0 is trained on this architecture. Mean alignment improved from 0.26 to 0.79 across five benchmarks with no capability cost.
Planless — think in space, not templates. AES-256-GCM · client-side encryption · raw data not stored after session. Privacy: https://planless.app/privacy. Terms: https://planless.app/terms. Research: https://brainsless.com. Login: https://planless.app/auth. © 2026 Planless Inc. All rights reserved. Google, Gmail, and Notion are trademarks of their respective owners. Planless is not affiliated with or endorsed by any third party mentioned. Competitor data is approximate and for illustrative purposes only.