You are a one-person business, which means you are also the marketing team, the customer support desk, the bookkeeper, and the person who was supposed to post on Instagram three days ago. Most AI tools hand you a blank chat box and expect you to know exactly what to ask for. Sintra takes a different swing at the problem: instead of one general assistant, it gives you a lineup of named AI workers, each pointed at a specific job, that you "hire" and put to work.
Quick facts
Pricing (as of 1 Jul 2026): paid, with a free 14-day money-back guarantee. Plans run on a promo at the moment, roughly $15.60/month on the annual plan up to $48.50/month month-to-month, and every plan comes with 250 credits a month that get spent as your helpers do things. Platforms: web app plus iOS and Android. Not open source. Made by PlayOS, Inc.
What it is
Sintra calls its product a marketplace of AI employees, though in practice you are subscribing to software, not payroll. The pitch is that you get a set of a dozen or so AI helpers, each with a name and a role: Soshie runs social media, Dexter handles data, Emmie writes email campaigns, Cassie covers customer support, Penn writes copy, Scouty helps with recruiting, and so on down the roster.
Under the hood these are AI agents. An agent is just software that can take a goal, break it into steps, and carry them out using tools you connect, rather than only answering questions. Two features do the heavy lifting. Brain AI is a shared memory: you tell it about your business once (your voice, your products, your customers) and every helper draws on that instead of you re-explaining yourself in each chat. And integrations, of which Sintra advertises more than a thousand, are the connections that let a helper actually reach into your other apps to post, send, or pull data.
The real-world problem it solves
Picture a woman who runs a small skincare brand out of her spare room. Monday is order fulfilment, Tuesday she is answering the same three customer questions for the tenth time, and somewhere in there she is supposed to write an email to the people who abandoned their carts. She opens a generic chatbot, stares at the empty box, and closes it again because framing the request feels like more work than just doing the thing.
Sintra's answer is to remove the blank page. You do not compose the perfect prompt; you go to Emmie and say you want a win-back email for cart abandoners, and because Brain AI already knows the brand, the draft comes back sounding like her shop and not like a robot. That is the actual value here: less prompt engineering, more "here is a task, go."
Where it's useful
A solo skincare seller points Emmie at her abandoned-cart list and gets a week of follow-up emails written in her brand voice, so the 9pm "I should really email those people" guilt finally goes quiet.
A local gym owner hands Soshie the week's class schedule and gets captions and post drafts for each day, then approves them from his phone between coaching sessions instead of fighting Canva at midnight.
A freelance consultant who dreads spreadsheets drops a messy export into Dexter and asks which clients brought in the most revenue last quarter, getting a plain-English answer without touching a pivot table.
A two-person e-commerce shop puts Cassie on the repetitive "where is my order" and "what is your return policy" questions, freeing both founders to deal with the messages that actually need a human.
Why it stands out
The genuinely useful idea is the memory. Most people never get much out of AI because they treat every session like the first, re-typing context each time. Sintra's Brain AI turns that around: teach it once, and the whole roster inherits what it knows. Pair that with the role-based framing (a named helper for a named job) and the barrier to entry drops for people who found the blank-chat approach intimidating.
The mobile app matters more than it sounds, too. Running your operation from a phone in the pickup line is the reality for a lot of the solo owners this is built for, and having the helpers there rather than chained to a desktop fits how they actually work.
Worth being clear-eyed, though. The helpers are essentially specialized presets on top of large language models, so the quality of what they produce still depends on the models underneath and on how well you have fed Brain AI. Reviewers this year have pointed at an "execution gap": the drafts and plans come easily, but you are still the one approving and shipping. And the credit system means heavy months (lots of images, video, or long tasks) can run you into top-ups. It is a real time-saver for the right user, not a fully autonomous staff.
How to try it
Sign up on the pricing page, pick a plan (there is a 14-day money-back guarantee if it does not earn its keep), and the first thing worth doing is feeding Brain AI real details about your business before you ask any helper to produce anything. Skip that step and every draft comes out generic. Then connect the one or two apps you live in, your store, your inbox, your socials, and give a single helper one concrete task to see how it handles your voice.
Sintra also runs an affiliate program if you end up recommending it, which you can find at sintra.ai/affiliate.
Takeaway
Sintra is a smart fit if you are a solo owner or tiny team who has bounced off blank-box AI tools and wants something that already knows your business and is organized by job. Feed the memory, connect your apps, and treat the helpers as fast drafters you still supervise. Go in expecting a very capable assistant rather than a hands-off employee, and it is one of the friendlier on-ramps to actually using AI in a small business.