01
Three active tasks. No more.
You can have a maximum of 3 open tasks. Not 800. Three. Want to start a fourth? The screen physically won't let you. First close — or officially throw away — one of the three. This isn't advice. It's a wall.
Coming soon · iOS + macOS
ONE
You don't finish anything
because you can't stop starting.
Every other productivity app helps you start more. ONE is the only one that refuses.
One email when ONE is ready. No drip campaigns. No spam.
I'm Ivan. I have 800+ open ChatGPT/Claude chats. Brushed-aside projects in a folder I can't open. Half-written posts. A landing page from 2024 that I've redesigned three times and never published.
Six months of working with AI every day rewired my brain into a continuous idea generator. Every conversation spawns five more. I get to 95–99% and freeze right at the send button.
The problem isn't laziness. It isn't focus. It's the fear of finishing. As long as the work is unsent, it's perfect in potential. Send it — and it becomes vulnerable to judgment.
So my brain keeps everything at 99% for safety. Unfinished things don't get thrown away. They accumulate. That accumulation is the disease.
The productivity market is broken for us
Every focus app makes accumulation worse.
- AI planners (Motion, Tiimo, Sunsama) — break tasks into smaller tasks. Help you start more.
- Blockers (Forest, Focus Bear, Focuh) — silence distractions during a session. Concentration ≠ completion.
- Gamification (deer, pets, trees) — rewards starting. ADHD brains abandon them in 2 weeks for novelty.
Every app on the market is the gas pedal.
ONE is the brake.
How it works
Three rules. That's the whole app.
02
Every task has a final action.
Not "translate the document" — "send the file to the client." Not "build the website" — "publish the live URL." A task doesn't close until that single button is pressed. The app pushes on that last centimeter — and only that.
03
Voice your day. AI structures it. You decide.
Once a day, you tap the mic and talk freely about your three tasks for 30 seconds. The app's only AI call runs locally on the structured output — turning your speech into a clean «keep / dump» list. You tap one button per task. No planning, no sub-tasks, no «AI suggestions». You decide. The app just makes the decision unavoidable.
A day with ONE
What does using it actually look like?
No screens to learn. No onboarding. No tutorials. Here's a real Tuesday.
- 09:00
Open the app.
You see three cards. Each shows one task and its final action: «Send the translated file to the client», «Press deploy on ivankokin.com», «Reply to the lawyer about HK incorporation».
- 11:00
You hit Send on the translation.
Tap the green button on Card 1 — it slides off the screen. Done. You now have two active tasks and one free slot.
- 14:30
A new idea hits: «Let's build an MVP for a CRM.»
You try to create a fourth task. The screen physically refuses. A single sentence: «You have a free slot. Activate or stash.» You hit «stash» — it goes into your dump, not your active slots. Total time: 4 seconds. No friction, no planning, no commitment.
- 17:00
You hit Deploy on ivankokin.com.
Card 2 slides off. One active task left. Two free slots. The CRM idea is still in the dump, untouched.
- 22:00
Evening review. The mic appears.
You tap and talk: «Lawyer reply — still waiting for documents, keep one more day. CRM — was just hype, dump it. Apple Notes idea from today — keep, want to try tomorrow.»
AI parses your speech, shows three clean rows: Lawyer / Keep, CRM / Dump, Notes idea / Keep. You tap three buttons. Done.
Tomorrow you open the app — two active tasks plus one fresh from the dump. Still under three. Still under control.
By design
You will never open this app.
Every productivity app dies in two weeks because it demands time. ONE refuses to be opened. Your three tasks live where you already look — the lock screen, the watch, Siri. The app itself is a 12-second visit a day. That's the whole product.
Lock Screen
Three shapes. Three colors. Three sizes. Each = one task. Size = closeness to its final action. You glance at your phone — you know your three things in 0.3 seconds. No text. No numbers. Just shape.
Dynamic Island
When a task hits 95%+ — its final action lives in Dynamic Island until you press it. You can't pretend to forget it. The phone won't let you. Tap it directly from the island and it's done.
Siri Shortcut
An idea hits while you're driving. Walking. In a meeting. You say six words to Siri. The idea is in your dump — not in your head, not yet active. Total user effort: 5 seconds. No screen touch.
The Closing Ritual
When you press the final-action button, the card dissolves into particles. Deep low-frequency haptic. Three seconds of silence in the spot where the task was. No celebration animation. No streak. Just release.
You'll feel the difference after seven days, not seventy. Not because the app rewards you — because your head gets quiet. That's the only reward ONE pays.
By design
What ONE will never have.
- × Calendar integrations
- × Sub-tasks, tags, projects, folders
- × Streaks, points, animals, trees
- × An AI that breaks tasks into smaller tasks
- × A second brain that remembers everything
- × Cloud sync, accounts, friend leaderboards
Every feature listed above is the disease pretending to be the cure. Memory is accumulation. ONE is built to forget, not to remember.
Try the method today — free
The app ships later. The method works now.
ONE is built on a method I run on myself every day. That method is a single system prompt I paste into Claude or ChatGPT — it then enforces all three rules on me in every chat. No installation. No accounts. No app needed.
Copy the prompt below. Paste it into your AI's Custom Instructions (ChatGPT), Project Instructions (Claude), or .cursorrules file (Cursor). The next chat will run the method on you.
Free. No email required. Attribution welcome but not required. If it works on you for a week, you'll know the app is worth waiting for.
Get the one email when it ships.
No drip campaign, no «free workbook», no Notion template. Just one notification — when it's live in the App Store.
Built by Ivan Kokin in Shanghai.
Personal first user. If it doesn't work on me for 30 days, it ships to no one.