Getting started · Corner help

Get the installer

Corner is in private beta. Ask Elmir or C for an invite and you'll get the installer file for your computer:

Mac with Apple silicon: Corner-0.1.0-arm64.dmg
Windows, 64-bit: Corner-Setup-0.1.0-x64.exe

Beta builds aren't signed by Apple or Microsoft yet, so your computer warns you once when you open Corner. The steps below get you past it. You only do this once per install.

Install on a Mac

Double-click Corner-0.1.0-arm64.dmg.
Drag Corner onto the Applications folder in the window that opens, then eject the disk.
Open Corner from Applications. macOS says it can't verify the app. Click Done. Don't move it to the Bin.
Open System Settings > Privacy & Security and scroll to the bottom. You'll see that “Corner” was blocked. Click Open Anyway, confirm with your password or Touch ID, then click Open Anyway once more.
Corner opens. On the first run macOS asks nothing: Corner creates its own Keychain item, “Corner Safe Storage”, to lock its database.

If Open Anyway doesn't show up, open Terminal (⌘Space, type “Terminal”), paste this line, press Return, then open Corner again:

xattr -cr /Applications/Corner.app

Install on Windows

Double-click Corner-Setup-0.1.0-x64.exe.
Windows SmartScreen says “Windows protected your PC”. Click More info, then Run anyway.
Click through the installer. It installs for your user only, so it needs no admin rights, and adds Corner to the Start menu and the desktop.

Where Corner lives

Corner has a main window and a small card that appears in the bottom-right corner of your screen, above the taskbar, on the display your mouse is on. The card never takes your keyboard focus, so it can't eat what you're typing elsewhere. To open its chat from any app, press Ctrl+Alt+N / ⌘⌥N.

Closing the window doesn't quit Corner: it keeps running in the menu bar (Mac) or the system tray (Windows), because the card can only nudge you while Corner runs. The tray menu has Open Corner, Start sprint, Pause nudges and Quit. On a Mac you can also quit with ⌘Q.

Try it on made-up data first

You can see the whole thing before connecting a single account. On the first screen, pick Try it with demo data. Already set up? Use Settings > About > Open demo.

Corner restarts once into a separate demo profile with its own database, logs and key. Your own chats and settings are never touched.
You get made-up deals, a card in the corner and a short tour. A reply comes in while you watch.
No Telegram and no API key are needed. An offline model stands in for the AI, so drafts are canned.
A Demo · made-up data pill sits at the top. Exit demo takes you back, and the demo profile is wiped.

The first-run setup

The first time you open Corner for real, it walks you through eight short screens:

Welcome. Get started, or try the demo.
Before you connect anything. Exactly what Corner reads, stores and sends. Tick I understand to go on.
Connect Telegram. See below.
Add your Anthropic key. Or skip it for now. See below.
Reading your chats. Corner syncs your recent chats and works out which ones are deals.
Found in your chats. One chat at a time: Track (J) or Ignore (K), and U to undo. Nothing becomes a deal without your say here.
Your rhythm. How hard Corner nudges (Gentle, Standard or Relentless), your working hours and an optional daily sprint time.
Done. You land on Today.

Quit halfway and Corner picks up at the same screen. To see the setup again, use Settings > About > Restart onboarding. Your chats, deals and settings stay as they are.

Connect Telegram

Corner signs in with Telegram's own login, as a linked device, the same way Telegram Desktop does.

In the setup, or under Settings > Accounts, click Connect Telegram.
On your phone, open Telegram and go to Settings > Devices > Link Desktop Device.
Scan the QR code Corner shows.

No phone at hand? Choose to sign in with your phone number instead. Telegram sends a code to the Telegram app on your other devices, or by SMS. If you've set a two-step verification password in Telegram, Corner asks for that too.

The first sync reads up to 300 chats that were active in the last 90 days. It skips bots, channels, your Saved Messages and groups with more than 25 people, because those aren't client chats.

To disconnect, use Settings > Accounts > Disconnect. Corner signs out of Telegram and stops reading. Switch on Also delete synced Telegram data to remove the chats, deals and nudges it stored. Your chats in Telegram are never touched.

Connect WhatsApp Coming

WhatsApp isn't in your build yet. Here's how it will work, so you know what you're agreeing to:

WhatsApp Web runs inside Corner, in its own tab. You link it by scanning WhatsApp's own QR code from your phone. Corner never touches the pairing.
Corner only reads. It never sends a message and never clicks through your chats. You reply in WhatsApp itself.
Timing nudges work from day one, from the chat list. The details (open questions, promises) fill in as you open each chat, and the deal says so until then.
If WhatsApp changes its page and Corner can't read it reliably, it pauses WhatsApp sync and shows a banner instead of guessing. See the WhatsApp banner.

Connect email Coming

Email isn't in your build yet either. When it lands you'll connect an inbox over IMAP with an app password: a separate password your provider makes for one app, which you can revoke any time without changing your real one. Corner never marks mail as read, never moves or deletes it, and a reply goes out only when you press Send. You'll be able to connect up to three inboxes.

Get the password ready now if you like. Per provider:

Gmail and Google Workspace: Turn on 2-Step Verification first: Google requires it. Then open myaccount.google.com/apppasswords, name the password “Corner”, click Create and copy the 16 characters (spaces don't matter). Workspace admins can switch app passwords off; if the page says they're unavailable, ask your admin.
iCloud Mail: Sign in at account.apple.com, open Sign-In and Security, choose App-Specific Passwords and create one named “Corner”. Use your full iCloud address.
Yahoo Mail: Open Account Security, choose Generate app password and name it “Corner”.
Fastmail: Open Settings > Privacy & Security > Integrations and create an app password for “Mail (IMAP/SMTP)”.
Zoho Mail: Make sure IMAP access is on in Zoho Mail's settings, then open Security > App Passwords and generate one named “Corner”.
GMX and WEB.DE: Turn on POP3/IMAP access for external mail apps in your mailbox settings. Then use your normal password, or an app password if you use two-factor sign-in.
Outlook.com and Microsoft 365: Not at first. Microsoft no longer accepts passwords from mail apps, so these need “Sign in with Microsoft”, which comes later.
Any other provider: Use the password your provider gives mail apps. With two-step verification on, that's an app password. You can set the IMAP and SMTP servers by hand. Corner only connects over TLS.

Add your AI key

Corner uses Anthropic's Claude models with your own API key, so you pay Anthropic directly for what you use. Create a key in the Anthropic Console (console.anthropic.com), then paste it in the setup or under Settings > AI > Add API key. Corner checks it with one tiny request and stores it encrypted on this computer.

What the key buys you:

Finding your deals among your chats, with a one-line reason for each.
The deal panel filled in for you: stage, summary, open questions, what you promised and when.
Drafts in the chat's language when you press Ctrl+J / ⌘J. They never send themselves.

No key? Corner still works on timing alone: replies owed and chases fire from who wrote last and when. You just get no AI findings, the Suggested list stays empty and there are no drafts.

Settings > AI shows today's usage against a daily budget: 1.5 million input tokens by default (output is capped at a tenth of it). When the budget runs out, analysis pauses until tomorrow, but drafts you ask for keep working up to 20% over. You can raise or lower the budget there, and Replace or Remove the key any time. What the AI sees is on Privacy and data.