Pricing
Anyone can start free. Go Pro for more projects and Dia.
Make an account and build boards on Free, with no card. Move to Pro when you outgrow the project limit, want your full version history, or want Dia, Grein’s AI assistant, working on your boards.
Free and Pro
Prices are in US dollars. Pro is billed monthly and renews until you cancel.
Free
For trying Grein and for smaller projects. No card needed.
- Up to 2 projects
- Unlimited canvas blocks
- File uploads up to 25 MB
- 5-day version history
- Public sharing
No payment details needed.
Pro
For ongoing work across many projects, with Dia on your boards.
- Unlimited projects
- Unlimited canvas blocks
- Larger file uploads
- Full version history
- Public sharing
- Dia, your AI thinking partner
- Priority support
Create an account, then upgrade later.
Compare plans
What each plan includes today, limits and all.
| Feature | Free | Pro |
|---|---|---|
| Price | $0, free forever | $4.99 per month |
| Projects | Up to 2 | Unlimited |
| Canvas blocks | Unlimited canvas blocks | Unlimited canvas blocks |
| File upload size | File uploads up to 25 MB | Larger file uploads |
| Version history | 5-day version history | Full version history |
| Public sharing | Included | Included |
| Dia, the built-in AI assistant | Not included | Included |
| Peek, Dia’s suggestions while you work | Not included | Included (beta) |
| Priority support | Not included | Included |
| Claude, ChatGPT, Gemini or Perplexity over MCP | Yes, on your own AI subscription | Yes, on your own AI subscription |
AI usage and integrations
Dia is built in and comes with Pro. Outside assistants connect to your account and run on your own subscription with that provider.
Pro
Dia
Grein’s built-in AI assistant. Chat with it about a board, ask it to make changes on the board, and have it read links and documents or search the web when you ask.
Pro, beta
Peek
Dia’s suggestions while you work, without you having to ask. Peek is still in beta.
Your own AI subscription
Claude, ChatGPT, Gemini and Perplexity
Connect them to your Grein account over MCP from Settings → Connections, signing in with OAuth. Their model usage runs on your own subscription with that provider, not on your Grein plan.
Your own AI subscription, beta
Desktop app
Grein Desktop, in beta, lets you use your own signed-in Claude or ChatGPT account.
Setup steps for each connection are in the help docs.
Billing, answered.
No. The Free plan needs no payment details. Create an account and start a board.
Create a free account first. When you want Pro, open Settings → Billing in the app and choose the Pro plan. Payment goes through Paystack.
Pro is billed monthly in US dollars through Paystack. It renews each month until you cancel.
Open Settings → Billing in the app and cancel there. Cancelling stops the next renewal. You keep Pro until the end of the period you’ve already paid for.
Refunds are looked at case by case. Contact support with your account email and what happened, and we’ll take a look.
Yes. Every 5 qualified invites earn you 14 days of Pro. You’ll find your invite link in Settings → Referrals.
Connecting Claude, ChatGPT, Gemini or Perplexity over MCP works with a Grein account. You connect them from Settings → Connections and sign in with OAuth. Their model usage runs on your own subscription with that provider, not on your Grein plan.
Pro includes Dia, Grein’s built-in AI assistant. Dia can chat about your board, make changes on it, and read links and documents or search the web when you ask. Pro also includes Peek, Dia’s suggestions while you work, which is in beta.
Create your first
board.
Start with a question or a few notes. Bring people in when it’s ready.