Cofounder vs Sintra
We give Cofounder a 2.8 GPA and Sintra a 2.6, out of 4.0. Cofounder grades higher on the free plan and features. Sintra grades higher on ease of use and platforms. They get the same grade on value for money.
Price, platforms and features side by side. The table says where each price was read and when.
Cofounder
Agent platform that runs the company work around your product
How we grade them
| 2.8GPACofounderGood | 2.6GPASintraGood | |
|---|---|---|
| Value for money | CCofounder Pro starts at $120 a month, several times what most agents here start at, and the terms add usage-based charges billed afterwards. You do get a lot of departments for it. But you can't bring your own API key to keep the bill down. | CList prices run from $52 a month on the 12-month plan to $97 for a single month, well above what agents here usually start at. When checked, the site had them on sale at $15.60 and $48.50. Either way you get 250 credits a month, and the longer terms are paid in one go. |
| Free plan and trial | CNo free plan. There's a 7-day free trial with the design system builder, landing page hosting and the strategy and analysis tools. The pricing page doesn't say whether it asks for a card. | FNothing is free. The site advertises no free plan and no trial, so step one is paying. Every plan has a 14-day money-back guarantee, which is a safety net and not a trial. |
| Features | AAgents sorted into departments, from engineering and marketing to support and finance. They find and email prospects, run campaigns, publish social posts and keep repeating routines going. Risky steps wait for your approval, and it sets up GitHub, Vercel and Supabase for you. | BTwelve helpers with set jobs, from social media to support to SEO, all drawing on one Brain AI that knows your business. They can send Gmail, add calendar events and post to Facebook, Instagram and LinkedIn. Solid basics. But advanced actions come out of 250 credits a month, and after that it's top-ups. |
| Ease of use | BEach department comes with default agents, and it sets up and manages GitHub, Vercel and Supabase for you, so there's little to wire together. There's no rating on record to go by, so a B. | A4.6 from about 2,500 App Store ratings. The helpers come ready-made, so you pick one and start chatting. One-click use cases cover jobs like keyword research and email campaigns. |
| Platforms and integrations | BA web app, with integrations for GitHub, Vercel, Supabase, Linear, Stripe, Slack, Gmail and Notion. There's a command-line tool, an MCP server and a REST API too. The listing has no phone or desktop app. | AWeb, iPhone and Android, with connections to Gmail, Outlook, Google Calendar, Facebook, Instagram, LinkedIn, Notion and QuickBooks. No desktop app or API is listed. |
| Best for | solo founders handing off the work around a product | a ready-made set of helpers for a small business |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Cofounder and Sintra. How we grade
Where they differ
- Cofounder starts at $120 per month (Cofounder Pro, listed as a starting price). Sintra starts at $52 per month on the 12-month plan, before the discount shown on site.
- Only Sintra lists iOS and Android apps.
- Cofounder also covers sales pipeline.
- Sintra also covers chat assistant.
At a glance
| Cofounder | Sintra | |
|---|---|---|
| Pricing | Free trial | Paid |
| Starts at | $120 per month (Cofounder Pro, listed as a starting price) | $52 per month on the 12-month plan, before the discount shown on site |
| Free plan | None | None |
| Free trial | 7-day free trial with the design system builder, landing page hosting and strategy and analysis tools | None listed |
| Web | ||
| iOS | ||
| Android | ||
| Made by | The General Intelligence Company Of New York | PlayOS, Inc. |
| Price read from | cofounder.co | sintra.ai |
| Checked | Oct 6, 2026 | Oct 5, 2026 |
Who each one suits
Cofounder
- Solo founders and small teams launching an early-stage software company
- Founders who build the product themselves and want help with go-to-market
- Handing outreach, content and recurring operations to agents with approvals
Sintra
- Solo founders and small businesses covering many roles
- Routine marketing work such as social posts, emails and SEO copy
- Owners who want ready-made helpers rather than building agents
Worth knowing
Cofounder
- There is no lasting free plan: after the 7-day trial, Cofounder Pro starts at $120 a month, and the terms bill usage-based charges in arrears.
- The Team Plan, planned at $100 per seat, is not yet available; the pricing page offers only a waitlist.
- The documentation says Cofounder is not intended to build or rebuild your core product, database, authentication or hosting stack.
- You cannot bring your own API key or a Codex or Claude Code subscription, according to the pricing FAQ.
Sintra
- The website advertises no free plan or free trial; all paid plans carry a 14-day money-back guarantee.
- Prices here are the crossed-out list prices. When checked, the site sold the plans at 50% to 70% less and its FAQ gave $48.50 a month as the starting price.
- Each plan includes 250 credits a month for advanced AI actions; more must be bought as top-ups.
- The lower monthly rates on the 3-month and 12-month plans are charged as one payment for the whole term.
Key features
Cofounder
- Departments of agents
- Work is split across departments, each with agents that have their own instructions, integrations and skills. Default agents cover engineering, marketing, design, sales, support, operations and finance.
- Approvals before risky actions
- Agents run several tasks in the background at once, and actions the vendor treats as potentially dangerous, such as incorporating an LLC or opening a bank account, wait for your approval.
- Managed GitHub, Vercel and Supabase
- Cofounder sets up and manages GitHub, Vercel and Supabase projects for you. Pro and Team users can claim ownership at any point, after which Cofounder no longer manages the configuration.
- Sales and marketing work
- Agents research customers, find and enrich prospects, send outreach from inboxes provisioned for them, run email campaigns and publish social posts, drawing on shared company context.
- Routines
- A routine is a repeating job for one agent, such as a daily status update, a weekly metrics review or a monthly cleanup checklist. An agent can have several.
- CLI, MCP server and REST API
- Besides the web app, your own agent can run a company through Cofounder's hosted MCP server, the cofounder command-line tool or the REST API, with API keys for scripting.
Sintra
- Twelve role-based helpers
- Every plan includes all 12 helpers, each with a set role, among them Soshie for social media, Cassie for customer support, Seomi for SEO, Milli for sales and Vizzy as a virtual assistant.
- Brain AI
- A shared knowledge base of brand details, files and website content that every helper draws on, so output stays consistent with the business.
- Integrations that take action
- One-click connections let helpers send and reply to Gmail or Outlook mail, create Google Calendar events, publish to Facebook, Instagram and LinkedIn, and update Notion pages.
- One-click use cases
- Preset tasks run with a few clicks, such as competitor research, finding SEO keywords, generating email campaigns and removing image backgrounds.
- Profiles and shared workspaces
- Unlimited business profiles can be created, each with its own context, and a workspace can be shared with teammates.
- Work in 100+ languages
- Helpers work in more than 100 languages, for example writing social posts in Italian or answering emails in German.
Plans
Cofounder
Free TrialFree
for 7 days
Design system builder, landing page hosting, and strategy and analysis tools.
Cofounder Pro$120
per month, listed as a starting price
For a founder running a company: SEO and ICP analysis, multiple agents, outbound and an email inbox, social post publishing, and an LLC incorporation add-on.
Team Plan$100
per seat; coming soon, billing period not shown
Planned plan adding multiplayer access, SOC 2 and priority support. It is not on sale yet; the pricing page offers a waitlist.
Sintra
12-month plan$52
per month for 12 months, list price before site discount
All 12 helpers, 250 monthly credits, 15+ integrations and 24/7 support. Shown at $15.60 a month, or $187.20 for the term, when checked.
3-month plan$59
per month for 3 months ($177), list price before site discount
The same bundle on a quarterly term. Shown at $23.60 a month, or $70.80 for the 3 months, when checked.
1-month plan$97
per month, list price before site discount
The same bundle billed one month at a time. Shown at $48.50 a month when checked.
Ways to pay less
Cofounder
No public discounts listed.
Sintra
- Other savings
Sale pricing: 50% to 70% off list
When checked, the pricing page showed $48.50 a month on the 1-month plan (list $97), $23.60 on the 3-month plan (list $59) and $15.60 on the 12-month plan (list $52).
- Annual discount
Longer terms cost less per month
At list prices the 12-month plan works out to $52 a month and the 3-month plan to $59, against $97 for a single month. Longer terms are paid upfront.
