Sintra vs Marblism: 12 AI Employees or 7, Credits or Hours

Sintra and Marblism sell the same idea, a team of AI employees on one subscription, but they split on the points that decide the purchase. Sintra gives you 12 roles, 250 credits a month and a 14-day money-back guarantee on the first web purchase, at $48.50 a month billed monthly or $15.60 a month billed yearly. Marblism gives you seven roles, 50 monthly hours of AI work and a 7-day guarantee, at $44 a month billed monthly or $24 a month on its yearly option. The phone decides most cases. Marblism has a receptionist that answers calls. Sintra's helpers cannot.

If your work is social posts, email, a website and SEO, Sintra covers more ground and asks you to approve what goes out before it reaches anyone. If your work is answering callers and chasing new prospects, Marblism has staff for exactly that. One caution applies before any Sintra price: Sintra does not guarantee the renewal price, because its Terms charge renewals at the then-current rate and offer prices may apply only to the first term.

Twelve roles against seven: who does which job

Sintra X includes all 12 AI employees: Soshie for social media, Penn for copy, Seomi for SEO, Emmie for email marketing, Cassie for customer support, Milli for sales, Vizzy as a virtual assistant, Buddy for strategy, Dexter for data, Commet for websites, Scouty for recruiting and Gigi as a personal growth coach. Marblism's single plan includes seven: Eva as executive assistant, Sonny for social media, Stan for lead generation, Penny for SEO, Rachel as receptionist, Walter for websites and Linda as a legal assistant. Lined up by job, the overlap is real but uneven.

Matching names hide different depths. Seomi only advises: she cannot log into your website to change code or content, and Penn pushes drafts to WordPress for you to review rather than publishing them. Commet builds one static site per workspace, hosted on a sintra.ai subdomain or your own domain, and is not an eCommerce platform. On Marblism's side, its homepage says Sonny formats each post for Reels, Stories, the feed or YouTube and publishes it for you. Sintra's extra five roles matter only if you will use them. A plumber with no hiring plans gains little from Scouty.

What a month costs, and what one plan covers

Sintra sells one plan, Sintra X, priced per workspace. It costs $48.50 a month billed monthly, $23.60 a month billed quarterly ($70.80 every three months, paid upfront) or $15.60 a month billed yearly, which is $187.20 a year by our arithmetic.^[1] VAT is added at checkout according to where you are. Twelve months on monthly billing come to $582, so the yearly term costs $394.80 less over a year, by our arithmetic. The full breakdown of terms, credit packages and store prices sits in our Sintra pricing guide.

Marblism lists $44 a month billed monthly and $24 a month on its yearly option. Its pricing page does not print a yearly total, so we do not compute one. Marblism's plan includes all seven AI employees on either billing option, with 50 hours of work, unlimited team members and unlimited businesses. Its homepage adds that each business under one account can have its own set of AI agents and settings, which matters for anyone running more than one brand; its pricing page does not say whether the 50 hours are per business or shared across them.

That last point is where the per-month figures stop telling the story. Sintra also allows unlimited workspaces, one per business or client, but a new workspace starts with a blank Brain AI, 20 free credits a month and no automations. Sintra does not publish the price of a second paid workspace, so confirm it with Sintra before you plan three brands on one account. For one business on monthly billing, the prices sit close together ($48.50 against $44 a month); on the yearly options, Sintra's $15.60 a month billed yearly is lower than Marblism's $24 a month. For several businesses, Marblism's plan names unlimited businesses, while each extra Sintra workspace has its own plan and stays thin until you pay for it.

Credits against hours: how each one meters the work

Sintra X comes with 250 credits a month. They reset on the day of the month your subscription started, even on quarterly and yearly plans, and unused credits do not roll over. Sintra lists rough costs: about 1 credit for a social post written, designed and posted, about 0.1 for a reply, and about 40 credits per 15 seconds of video. When credits run out, helpers stop or are restricted until the next reset unless you upgrade. Sintra can also change credit costs, with reasonable notice for significant changes.

Marblism meters time instead. Every plan starts with 50 monthly hours of AI work that reset each month, and Marblism says hours are consumed only by advanced AI actions, with paid top-ups when they run out. The two units do not convert. A credit is a price per action; an hour is a budget of machine time. Neither vendor publishes an exchange rate, so the only honest comparison is your own workload over the first weeks.

More Sintra credits come as recurring upgrades that raise the renewal price, not one-time packs, and they are non-refundable. The only web package Sintra prices publicly is 600 credits a month for $240 for three months on the 3-month plan, or $80 a month by our arithmetic. Video is the fastest drain. Plan for it.

Who presses send: approvals, phone calls and leads

Sintra is built around drafts. Posts from its Social Media Manager automation always need your manual approval, or they are not scheduled.^[2] Cassie drafts email and Facebook comment replies but never answers customers on her own, and Sintra does not send automated replies to social DMs; you copy and paste those drafts yourself. The one exception is a recurring task you schedule yourself. It runs with no approval step. A task set to send an email sends it.

Marblism describes the opposite default. Its homepage says its AI employees handle tasks automatically and check in only when they need your input or approval. Rachel answers every call around the clock, books appointments and speaks 100+ languages. Stan searches 700M+ verified contacts and follows up until they reply. Sintra's help center says its AI receptionist features cannot interact directly with external clients or handle phone calls. Milli prepares sales work instead: she links your calendar, email and CRM and rehearses pitches and objections, while writes to HubSpot or Salesforce depend on the current integration scope.

So the trade is control against reach. Sintra keeps a human gate in front of anything customer-facing, which slows you down but catches a wrong reply before a customer reads it. Marblism lets its staff act and talk to people for you, which saves the checking but puts more weight on how well you set them up. Neither is wrong. Pick the default you trust.

Refunds, support and the data promises

Sintra's 14-day money-back guarantee covers the first web purchase of Sintra X only. You must ask support explicitly for the refund; canceling alone does not trigger one. Credits are non-refundable, and App Store or Google Play purchases follow the store's own refund rules. Sintra says approved refunds usually reach the original payment method within 10 business days. Marblism offers a 7-day money-back guarantee with a full refund, so test it in your first week. Support differs in kind too. Sintra helps by chat and email at help@sintra.ai, with no phone support, while Marblism offers live chat plus guided onboarding with an account manager.

On data, Sintra says it does not train models on your data, and its Privacy Policy bars its AI providers from training their own models on your personal data; its data processing terms promise TLS 1.2+ in transit and encryption at rest where feasible. Marblism says data is encrypted in transit and at rest, is CASA Tier 2 verified, and is never used to train AI models. Sintra connects to 1,000+ integrations through Composio but has no public API. Marblism lists Gmail, Outlook, Instagram, Facebook, X and LinkedIn among its integrations. Marblism publishes its own ranking of AI employee products, which places itself first; it is a rival's test, not an independent one.

The ratings above come from store reviewers of Sintra's mobile apps, not from a head-to-head between the two products. They tell you how app users feel about day-to-day use of Sintra, which is useful, but they say nothing about phone answering or lead generation. Treat them as one signal about Sintra, and let the fit with your own work carry more weight.

Picking by the work you hand over

Choose Marblism when calls and prospects are the bottleneck. A clinic, a salon or a trades business that loses customers to missed calls gets a receptionist that books appointments, and a sales-led shop gets outbound follow-up from a large contact pool. Marblism also suits owners who want staff that act without asking and who run several businesses under one account. Accept a 7-day refund window and a metering unit, hours, that you can only judge in use.

Choose Sintra when the work is content and administration you want to review. Social posts with your Brand Kit, email campaigns you send yourself, a simple website, SEO advice, recruiting help and data summaries all sit in one plan, and nothing goes to a customer without you. Yearly billing brings Sintra to $15.60 a month billed yearly ($187.20 paid upfront); by our arithmetic it beats quarterly only if you stay seven months or more. For a closer look at the social side, read our guide to Soshie; if neither product fits, our Sintra alternatives sort other tools by need.

A receptionist or a content desk: the call to make

The choice comes down to who your AI staff should talk to. If they need to answer your phone and chase new leads, Marblism has the roles for it and Sintra does not. If they should draft your posts, emails, site and SEO work for you to approve, Sintra's 12 roles and approval-first design cover more of that day, at $48.50 a month billed monthly or $15.60 a month billed yearly. Budget for video on Sintra's credits, test hard inside each refund window, and check Sintra's renewal amount in Manage billing before each term ends.