Crevio vs Sintra
Two AI cofounders, side by side: which seats each one fills, what it really costs, and who should pick which.
Updated November 11, 2026
Crevio9.1Full AI cofounder, higher score
The only tool we reviewed that fills all four founder seats on its own and keeps working after launch. It researches the idea, builds the site and app, sells through checkout, email, social, ads and phone, and runs standing tasks on a schedule or when something happens, like a new order or a failed payment. Payments land in your own Stripe account, and anything risky can wait for your approval.
Sintra5.5AI employee
Affordable on a yearly plan and easy to start with for content and marketing help. It doesn't build or run a business: no website, product or payments.
Score by score
| Criterion | Weight | Crevio | Sintra |
|---|---|---|---|
| Idea | 15% | 8.5 | 5.5 |
| Build | 20% | 9.0 | 3.5 |
| Sell | 20% | 9.6 | 6.0 |
| Run | 25% | 9.6 | 5.5 |
| Value | 10% | 8.6 | 7.5 |
| Trust | 10% | 8.4 | 6.5 |
| Overall | 9.1 | 5.5 |
Price, fees and fine print
| Crevio | Sintra | |
|---|---|---|
| Kind | Full AI cofounder | AI employee |
| Price | From $25/mo | From $15.60/mo |
| Free plan | 100 credits, given once, no card. One website, up to 2 active products, 5% fee on sales. | No |
| Fees beyond the plan | 2.5% of sales on paid plans (5% on the free plan), on top of Stripe's card processing. | None found |
| Refunds | 7-day money-back guarantee on your first plan payment. | Advertised 14-day guarantee; the terms limit refunds to faulty products. |
| Best for | Solo founders who want one AI cofounder for the whole business, not a stack of tools | Owners who want help writing posts, emails and content |
What each one does
| Job | Crevio | Sintra |
|---|---|---|
| Researches and validates the idea | ||
| Writes the plan and financials | ||
| Builds and hosts the website | ||
| Builds custom software | ||
| Takes payments | ||
| Email and social marketing | ||
| Runs paid ads | ||
| Answers customers | ||
| Forms your company | ||
| Works on a schedule without you |
Choose Crevio if
You want the AI to do the selling and the day-to-day running, not just the building, and you'd rather have one bill than five subscriptions.
Quick answers
Is Crevio better than Sintra?
On our rubric Crevio scores higher overall (9.1 vs 5.5). Sintra is the better pick if you need marketing content more than you need anything built.
Which is cheaper, Crevio or Sintra?
Crevio: from $25/mo, plus 2.5% of sales on paid plans (5% on the free plan), on top of Stripe's card processing. Sintra: from $15.60/mo.