Teams usually compare Windsor.ai and Supermetrics when they want ad data in their reports without paying enterprise prices. Both start under $50 a month, and both send marketing data into the tools your team already uses.
The difference is in what each plan counts. Windsor.ai limits how many platforms you connect but gives you a large pool of accounts to share across them. Supermetrics limits platforms too and sets a small account cap per platform. It also keeps data warehouses for Enterprise. If neither set of limits fits your reporting, we also cover Coupler.io, which prices by connected accounts instead of platforms.
Key takeaways:
- The lowest entry price. Windsor.ai Basic costs $19/month billed annually. Supermetrics Starter costs $44/month billed yearly.
- Very different account limits. Windsor.ai’s cheapest plan allows 75 accounts in total. Supermetrics Starter allows 3 accounts per data source.
- Warehouses on a small budget. Windsor.ai sends data to BigQuery or Snowflake from its entry plan. On Supermetrics, warehouses need an Enterprise quote.
- Free options. Windsor.ai gives you a 30-day trial and then a forever-free plan. Supermetrics offers a 14-day trial with no credit card.
- AI included. Windsor.ai’s MCP server comes with every plan, including the free one. Supermetrics adds AI credits to Starter and Growth.
- Supermetrics leads on security paperwork. Both hold SOC 2 Type II and host data in the EU, but only Supermetrics lists ISO 27001.
Windsor.ai and Supermetrics plans in one table
The table covers what buyers usually check first. Every value comes from the vendors’ own pages as of October 2026. Review scores come from G2.
| Windsor.ai | Supermetrics | |
|---|---|---|
| Best for | Agencies and small teams that need many accounts on a small budget | Small teams sending ad data to one reporting tool |
| Pricing model | Plans capped by data sources and total accounts | Plans capped by sources, accounts per source, destinations, and users |
| Entry price | Basic at $19/month billed annually, $23 billed monthly | Starter at $44/month billed yearly, $55 billed monthly |
| Free plan/trial | 30-day trial, then a forever-free plan | 14-day trial, no free plan |
| Data sources | 350+, all on every plan | 170+, some Premium connectors sold separately |
| Destinations | 20+, warehouses included from Basic | 1 core destination on entry plans, warehouses on Enterprise |
| Fastest refresh | Hourly from Standard, every 15 minutes on Professional | Not stated on the pricing page |
| Users | Unlimited on paid plans | 1 on Starter, 2 on Growth |
| AI capabilities | Windsor MCP with read and write actions | Supermetrics Studio, AI chats, MCP server |
| Security | SOC 2 Type II, GDPR | SOC 2 Type II, ISO 27001, GDPR, CCPA |
| G2 rating | 4.4 (90 reviews) | 4.4 (800+ reviews) |
What Windsor.ai vs Supermetrics pricing actually counts
Windsor.ai has four self-serve plans, priced here with annual billing. Basic costs $19/month for 3 data sources and 75 accounts, with daily sync. Standard costs $99/month for 7 sources and 75 accounts, and adds hourly sync. Plus costs $249/month for 10 sources and 200 accounts. Professional costs $499/month for 14 sources and 500 accounts, with a sync every 15 minutes. Monthly billing costs about 20% more. Enterprise is quoted and goes up to 200 sources and 50,000 accounts.
The way Windsor.ai counts matters. Each platform counts as one data source, and ads and organic count separately. That means Facebook Ads and Facebook Pages take up two of your sources. An account is one ID inside a platform, such as a single GA4 property. Destinations and team members don’t count toward any limit.
Supermetrics has two self-serve plans. Starter costs $44/month billed yearly for 3 data sources with 3 accounts each. Growth costs $177/month for 6 sources with 7 accounts each. Add-ons raise the limits on accounts, sources, users, and destinations, but each has a fixed ceiling, and the highest account ceiling the pricing page lists is 15. After that, you need an Enterprise quote. For plan-by-plan detail, Coupler.io has a full breakdown of Supermetrics pricing.
One agency, two bills
Take an agency with 12 clients. Each client runs Google Ads, Meta Ads, LinkedIn Ads, and GA4. That’s 4 data sources and 48 accounts, and the agency wants hourly data in Data Studio.
Windsor.ai. Basic doesn’t work, since it allows only 3 sources and syncs daily. Standard fits, with 4 of its 7 sources and 48 of its 75 accounts used, plus hourly sync, for $99/month. The agency has room for 18 clients. Client 19 brings the total to 76 accounts, which means moving to Plus at $249/month. Plus then covers up to 50 clients.
Supermetrics. Starter is ruled out right away. Growth covers the 4 sources but only 7 of the 12 accounts each one needs. Account add-ons start at $11/month on yearly billing, but the pricing page doesn’t say how they’re counted, so check with sales. Client 16 goes past the account ceiling and moves the agency to Enterprise. The pricing page doesn’t state a refresh frequency either, so confirm hourly updates before you sign. Data Studio is a core destination, so the included destination covers it.
In this scenario, Windsor.ai costs less and leaves more room to grow.
When a new channel changes the price. In both tools, the bill depends on how many platforms you connect as well as how many accounts you have. So if one client starts running TikTok Ads, the agency can move up a plan even though it only added a single account. Before you commit, it’s worth checking how a tool counts platforms and accounts. Tools that count only connected accounts are a useful comparison point, and that’s the main difference in a Supermetrics vs Coupler.io comparison. You can see how that model is priced on the Coupler.io pricing page.
The Windsor.ai vs Supermetrics audience and who each plan is sized for
On G2, 61.7% of Windsor.ai reviewers work at small businesses and 30.9% at mid-market companies. Windsor.ai says 450,000+ marketers use the platform. Unlimited users on every paid plan suits agencies where several account managers share one workspace.
Supermetrics says 200,000+ companies use its products. It targets individuals and small teams with Starter. Starter includes 1 user and Growth includes 2, so bigger teams pay for extra seats or move to Enterprise. Enterprise is also where warehouses and SAML sign-in live, which pulls larger companies toward a custom contract.
If your client list keeps growing, it helps to see how the reporting looks before the next plan jump.
See all your clients' ad accounts in one dashboard with Coupler.io
Book a demoWindsor.ai vs Supermetrics data sources by the numbers
Windsor.ai lists 350+ connectors, and every plan includes all of them. There are no Premium connectors to unlock. The real limit is how many different platforms your plan allows you to use at the same time, and adding new channels can push you toward Windsor.ai alternatives. If you’re already set up on Windsor, you can migrate from Windsor AI and keep your existing reports.
Supermetrics documents 170+ connectors across paid media, SEO, social, ecommerce, sales, and retail media. Some are Premium and sold separately through sales. Windsor.ai has the bigger catalog, but both lean heavily toward marketing data.
Windsor.ai vs Supermetrics destinations and the warehouse question
Windsor.ai lists 20+ destinations, and every plan can use them. Warehouses include BigQuery, Snowflake, Amazon Redshift, Databricks, and PostgreSQL. BI and spreadsheet options include Data Studio, Power BI, Tableau, Excel, and Google Sheets. Basic allows 5 destination tasks, and Standard and higher allow unlimited tasks.
Supermetrics Starter and Growth each include one core destination. You choose from ChatGPT, Claude, Microsoft Copilot, Data Studio, Google Sheets, Excel, and Power BI, and an add-on gives you a second one. BigQuery, Snowflake, and other warehouses need Enterprise. For a small team that wants marketing data in a warehouse, this gap alone may decide the choice.
Windsor.ai vs Supermetrics key features for shaping your data
Windsor.ai can transform data inside the platform before loading it, or hand raw tables to your own SQL. A Blended Data connector merges several sources into one table. Paid plans keep up to 10 years of history, within each platform’s own limits, and backfills start on Basic.
Supermetrics puts most of its data-shaping tools on Enterprise, including transformations, custom data import, Supermetrics Storage and its Data API. On the self-serve plans, the main extra is Supermetrics Studio, which builds dashboards from plain-language prompts.
How far Windsor.ai vs Supermetrics AI goes beyond a chat window
Windsor.ai’s MCP server is included on every plan, even the free one. It connects your data to Claude, ChatGPT, Gemini, and Perplexity, as well as Cursor, Copilot, and n8n. It can also make changes. From a chat, you can create, edit, or pause campaigns and change budgets in Google Ads, Meta Ads, LinkedIn Ads, TikTok Ads, Microsoft Ads, and Amazon Ads. The assistant asks for confirmation first, and new items start paused. Windsor.ai says it doesn’t train AI models on customer data.
Supermetrics spreads its AI across several products. Studio comes with 4,000 monthly AI credits on Starter and 12,000 on Growth. AI chats connect your data to Claude, ChatGPT, Copilot, and Gemini Enterprise. Supermetrics also runs an MCP server for clients such as Claude, ChatGPT, Copilot, and n8n, but its docs and product page disagree on which subscriptions include it. In Claude, Campaign Management can build and edit campaigns on Google Ads, Meta, Microsoft Advertising, and TikTok, and new campaigns stay paused until you approve them.
AI that reaches past ad data. Both vendors let you ask questions about your ad data and draft changes from a chat. Coupler AI goes beyond ad data because it works across all 400+ sources and can connect sources and build reports through conversation. The AI Agent answers questions inside the app. AI Integrations bring the same data into Claude and ChatGPT and AI Skills add ready-made analysis workflows.
Let Coupler AI do the data work for you
Tell Coupler AI what you need to know, from which source, and how often. It connects your account, sets up the data flow, keeps it refreshed, and lets you analyze the results inside Coupler.io or another AI tool.
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How Windsor.ai vs Supermetrics security & stability compare on paper
Windsor.ai completed a SOC 2 Type II audit with Prescient Assurance and follows UK and EU GDPR. Data is encrypted at rest and in transit, and each customer’s data gets its own encryption keys. Windsor.ai says its servers are hosted in a data center in Germany. SSO is listed only on Enterprise.
Supermetrics goes through an annual SOC 2 Type II audit and holds ISO 27001 certification. It processes data on AWS and GCP servers in the EU and complies with GDPR and CCPA. SSO is included on Starter and Growth, and SAML-based SSO requires Enterprise.
Neither vendor publishes an uptime figure. Supermetrics has been around since 2013, while Windsor.ai launched in 2017 and is based in Switzerland. For teams with formal vendor reviews, ISO 27001 gives Supermetrics an edge.
If your security review needs more than SOC 2, check the full list of certifications before you shortlist a tool.
Get SOC 2 Type II and HIPAA-ready reporting with Coupler.io
Try Coupler.io for freeWhat G2 reviewers say about Windsor.ai vs Supermetrics ease of use, support
On G2, both tools score 4.4, Windsor.ai from 90 reviews and Supermetrics from 800+. They tie on ease of use (8.2) and ease of setup (8.1). Windsor.ai leads on ease of admin, 8.6 to 8.0. The biggest gap is support quality, where Windsor.ai scores 8.9 and Supermetrics 7.8.
That support score matches what Windsor.ai offers. Live chat runs around the clock on every plan, and tickets get a reply within one business day. Enterprise customers also get a dedicated account manager.
Both let you test the product before paying. Windsor.ai’s 30-day trial includes 10 sources and 15 accounts, though data history is limited to 30 days. Supermetrics’ 14-day trial doesn’t ask for a credit card.
When neither Windsor.ai nor Supermetrics fits your reporting
Some teams find that neither tool fits. The usual reason is that their reporting goes beyond ad platforms, or that per-platform caps make every new channel a pricing decision. In that case, Coupler.io is worth a look.
Coupler.io, a data integration and AI analytics platform, answers the question most ad reports leave open: did the spend turn into revenue? It pulls data from 400+ sources into one report that updates on a schedule. You skip the CSV exports and manual matching, and you see campaign costs next to closed deals. That shows you which channels pay for themselves. Data goes to Google Sheets, Excel, Data Studio, Power BI, BigQuery, Snowflake, and AI tools like Claude. Paid plans start at $24/month billed annually, with a free plan and a 7-day trial. Pro refreshes hourly, and the Custom plan updates data as often as every 15 minutes.
On top of that, 200+ dashboard templates cover standard client reports, and Coupler AI handles analysis in the app or in Claude. Security includes SOC 2 Type II, GDPR, HIPAA and DORA, with TLS in transit and AES-256 for stored credentials.
The table below shows how the three tools compare.
| Coupler.io | Windsor.ai | Supermetrics | |
|---|---|---|---|
| Pricing model | Connected accounts, destinations, refresh speed | Data sources and total accounts | Sources, accounts per source, destinations, users |
| Entry price | $24/month billed annually | $19/month billed annually | $44/month billed yearly |
| Free option | Free plan, 7-day trial | Forever-free plan, 30-day trial | 14-day trial |
| Data sources | 400+, marketing and beyond | 350+, marketing-focused | 170+, marketing-focused |
| Fastest refresh | 15 minutes on Custom | 15 minutes on Professional | Not stated |
| Dashboard templates | 200+ | Pre-built templates, no count published | AI-built dashboards in Studio |
| AI capabilities | Coupler AI: AI Agent, AI Integrations, Skills | Windsor MCP | Studio, AI chats, MCP server |
Coupler.io suits teams whose reports combine marketing data with sales or finance data and who want ready-made dashboards from day one. It isn’t always the cheapest option. In a Coupler.io vs Windsor.ai decision for agencies that report only on ad accounts, Windsor.ai’s account pool is hard to beat on price. And if ISO 27001 is a must, Supermetrics covers it.
A short trial is the quickest way to see if this tool is the best fit for you.
Connect 400+ sources and get hourly refresh with Coupler.io
Try for freeChoosing between Windsor.ai and Supermetrics for your team
Go with Windsor.ai when
You manage many ad accounts across a small number of platforms and want the lowest monthly bill. It also fits teams that want warehouse destinations or AI write actions without an enterprise contract.
Go with Supermetrics when
You send ad data to one reporting tool, and your security review asks for ISO 27001. Keep an eye on the 15-account ceiling, because past it you’re choosing between an Enterprise quote and Supermetrics alternatives. If you’re already on Supermetrics and hitting that ceiling, here’s how to migrate from Supermetrics without rebuilding your reports.
Try Coupler.io when
Your reports combine ad data with CRM or finance numbers, and you want published prices with ready-made dashboards.
Skip all three when
You need marketing mix modeling or incrementality testing, where Funnel or Adverity fit better. If your team runs a dbt warehouse and wants developer-first ELT, look at Fivetran.