Supermetrics vs 
Windsor.ai
The main difference is price and limits. Windsor.ai starts free, then from $19 a month, with every destination on every plan and accounts pooled across sources. Supermetrics starts at €39 a month for 2 sources and 1 user, and adds approval rules on AI changes and AI-built dashboards. Both can now edit campaigns from Claude and ChatGPT.
By Theodor Lindfors, Founding Marketer, Lemonado
The short answer
Pick Windsor.ai if price and account limits matter most: it is cheaper, every plan gets every destination, and it scales to more clients. Pick Supermetrics if you want the longer track record, approval rules on AI changes and an AI dashboard tool.
Pick Lemonado if- It remembers every client's goals
- Accounts checked every morning
- Reports built and sent for you
Pick Supermetrics if- Approval rules on AI changes
- AI dashboards built in
- Few accounts, one dashboard
Pick Windsor.ai if- Lowest price, free plan
- Many clients on a small budget
- Every destination on every plan
Supermetrics vs Windsor.ai, side by side
The biggest gaps are price, how many accounts each plan allows, and where you can send the data.
What it is
- Lemonado
- An AI co-worker for marketing. It analyzes the data, builds reports and does the follow-up work.
- Supermetrics
- A data pipe into your tools and AI chats, plus an AI dashboard workspace.
- Windsor.ai
- A low-cost data pipe into BI tools, warehouses and AI chats.
Starts at
- Lemonado
- One plan with unlimited seats. See plans
- Supermetrics
- €39/mo billed yearly, €49 monthly.
- Windsor.ai
- Free for 1 source. Paid from $19/mo billed yearly.
Accounts
- Lemonado
- Every account you connect. Credits pay for the AI work, not the accounts.
- Supermetrics
- 2 per source on Starter, 7 on Growth, up to 20 with add-ons.
- Windsor.ai
- 75 on Basic and Standard, 200 on Plus, 500 on Professional, pooled across sources.
Users
- Lemonado
- Unlimited.
- Supermetrics
- 1 on Starter, 2 on Growth, up to 5 with add-ons.
- Windsor.ai
- Unlimited on paid plans.
Connectors
- Lemonado
- 3,000+ tools, and it can build a connection to any tool with an API.
- Supermetrics
- About 170 sources.
- Windsor.ai
- 350+ sources.
Destinations
- Lemonado
- Chat, Studio dashboards, Slack, Teams, email, and ChatGPT or Claude over MCP.
- Supermetrics
- Pick one: Looker Studio, Sheets, Excel, Power BI, Studio or an AI chat. Warehouses on Enterprise.
- Windsor.ai
- All 24 on every plan, including BigQuery, Snowflake, Tableau and AI chats.
History and refresh
- Lemonado
- Full history in your own warehouse, synced from each platform.
- Supermetrics
- As much as each platform allows. Hourly for the main ad platforms.
- Windsor.ai
- Up to 10 years. Daily on Basic, hourly from Standard, every 15 minutes on Professional.
Changes from AI
- Lemonado
- Full control of Google Ads: campaigns, bids, budgets, keywords and ads. Rebalances budgets across platforms. You approve, it sends the changelog.
- Supermetrics
- Edits campaigns on seven ad platforms, with approval rules, budget guardrails and undo.
- Windsor.ai
- 137 write actions across 19 connectors, on every plan. The AI chat asks you before each change.
Support
- Lemonado
- Talk to the team that builds it, in the app.
- Supermetrics
- Tickets, chat and email. G2 support score 7.8.
- Windsor.ai
- Live chat on every plan. G2 support score 8.9.
Both connect your data to an AI chat. Lemonado is the AI that does the work. Try it on your own accounts.
The key differences
Six points decide it for most teams. The edge goes to whichever tool comes out ahead on that point.
Edge: Windsor.aiPrice
Windsor.ai starts free and paid plans start at $19 a month. Supermetrics starts at €39 a month for 2 sources and 1 user. At every size we priced, Windsor.ai costs less for the same sources and accounts.
Edge: Windsor.aiAccount and client limits
Windsor.ai counts accounts across all sources together: 200 on Plus, 500 on Professional. Supermetrics caps accounts per source, at 20 on Growth with add-ons. For agencies, client 21 on Supermetrics means an Enterprise quote.
Edge: Windsor.aiWarehouses and destinations
Every Windsor.ai plan can send data to BigQuery, Snowflake, Tableau and 20 other places. Supermetrics plans include one core destination, extras cost more, and warehouses need Enterprise.
Edge: SupermetricsChanging campaigns from AI
Both can now change ad accounts from Claude or ChatGPT. Supermetrics' own comparison page says Windsor.ai is read-only, but that is out of date. Supermetrics has more controls: admin approval rules, budget guardrails, per-account write access and undo. Windsor.ai asks for confirmation in the chat.
Edge: SupermetricsAI inside the tool
Supermetrics has Studio, where AI builds live dashboards and boards, and an Insights Agent. Windsor.ai has no AI workspace of its own: you use it through Claude, ChatGPT or another AI chat.
Edge: Windsor.aiSupport and contracts
Windsor.ai scores higher for support on G2 (8.9 against 7.8) and on Trustpilot (3.6 against 1.5), and you can downgrade any time. Its yearly plans are not refundable. Supermetrics reviewers describe 60-day renewal notice periods and price jumps after repackaging.
Or skip the pipe: what Lemonado does instead
Supermetrics and Windsor.ai both plug your data into Claude or ChatGPT. You still type every question, and the chat starts from zero each time. Lemonado works on your accounts every day, with each client's context saved.
It already knows each client
Every client gets a workspace with its goals, its definition of ROAS and CPA, and every past analysis. Ask "why did Client B's CPA jump?" and the answer uses all of it.
It works when nobody asks
Routines run on a schedule: a summary of every account in Slack each morning, CPA spikes flagged before they burn budget, wasted Google Ads search terms cut every day.
It runs your Google Ads, with you in charge
In Google Ads, Lemonado can do anything you can: build and pause campaigns, change bids and budgets, add keywords and negatives, write new ads. Across platforms it rebalances budgets. You approve each change first and get the changelog.
It builds and sends the report
Ask for the client report in one sentence and Lemonado builds a live, branded dashboard. Put it on a schedule and it goes out on its own.
Meta Ads
GA4
StripeThree drivers. Creative fatigue is the biggest.
Slack · 8:02 AM
- tasks run by marketing teams during the beta
- 12,000+tasks run by marketing teams during the beta
- in ad spend managed with Lemonado during the beta
- $40Min ad spend managed with Lemonado during the beta
Weekly client reports with insights, across 50+ clients.
“What used to take me an hour or two now takes around 10 minutes.”
Cobus TaylorPerformance Lead, Stitch (50+ clients)1–2h10 minper reportSupermetrics vs Windsor.ai pricing
Supermetrics charges by source, account per source, user and destination, and meters AI credits. Windsor.ai charges by sources and a pooled account total, with unlimited users and every destination included.
LemonadoPricing: One monthly plan with unlimited seats. Credits pay for the AI work, not for each source or account. Try it free for 10 days with $150 in credits, no card. See plans
SupermetricsPricing: Starter €39/mo (billed yearly; €49/mo billed monthly) · Growth €159/mo (billed yearly; €199/mo billed monthly) · Enterprise, custom quote · verified November 2026
Windsor.aiPricing: Free $0 · Basic $19/mo (billed yearly; $23/mo billed monthly) · Standard $99/mo (billed yearly; $118/mo billed monthly) · Plus $249/mo (billed yearly; $299/mo billed monthly) · Professional $499/mo (billed yearly; $598/mo billed monthly) · Enterprise, custom · verified November 2026
A worked example: an agency with 20 clients on 5 ad platforms. That is 5 sources and 100 ad accounts, reported in Looker Studio.
On Windsor.ai, Basic and Standard stop at 75 accounts, so it is the Plus plan at $249 a month billed yearly. That covers 200 accounts, so there is room for about 40 clients, and BigQuery is included if you want it.
On Supermetrics, it is Growth at €159 a month plus extra ad accounts at €10 each, up to 20 per source. Supermetrics does not publish whether that extra is counted per source, so the total lands somewhere between about €290 and €810 a month, more with extra users or a second destination. At 20 clients you hit the ceiling, and client 21 needs an Enterprise quote.
On Lemonado, all 20 clients, every platform and your whole team fit on one plan with unlimited seats, and there is no ceiling at client 21. The difference is what you get for it: reports built and sent, and accounts checked every day. See plans
What users say
Supermetrics users like how easy it is and dislike the price changes and support. Windsor.ai users like the price and support and dislike the refund policy. Ratings checked November 2026.
Supermetrics
4.4 / 5 on G2, 820 reviews · checked November 2026
What people like
- Easy to use, with integrations that just work for most teams.
- Brings reporting into Sheets and Looker Studio in one place.
What people complain about
- Prices jump when plans are repackaged.
- Long renewal notice periods and no downsizing mid-contract.
- Support is hard to reach: 1.5 out of 5 on Trustpilot.
Windsor.ai
4.4 / 5 on G2, 90 reviews · checked November 2026
What people like
- More sources for the price than anything else reviewers tried.
- Fast, helpful support that adds missing fields.
What people complain about
- No refunds on yearly plans, even after an accidental renewal.
- Data can lag behind because of a 6-hour cache.
- Field names are not always the same across platforms.
The tools in detail
Lemonado is the AI co-worker for marketing. It remembers each client's goals and history, checks the accounts every day, builds and sends the reports, and makes changes you approve.
Best for: Agencies and teams who connected their data to an AI chat and still do the work by hand.
Where it falls down: It is not the cheapest way to move rows into Sheets. If that is all you need, Windsor.ai is.
- You want daily account checks without typing a prompt.
- You want each client's context saved, not a new chat every time.
- You want reports built and sent on schedule.
- You want it in Slack and Teams, or inside ChatGPT and Claude.
In Claude
In ChatGPTSupermetrics
Supermetrics sends ads, analytics and CRM data into Looker Studio, Sheets, Excel, Power BI and AI chats. In 2026 it added AI dashboards and campaign edits on seven ad platforms.
Best for: Marketers who report in one place and want tight control over AI changes.
Where it falls down: Small plans cap users, sources and accounts per source, and warehouses need Enterprise.
- You want approval rules before AI touches a campaign.
- You want AI-built dashboards in the same tool.
- You have a few accounts and one place you report.
Windsor.ai
Windsor.ai sends marketing data from 350+ sources into Sheets, Looker Studio, BI tools, warehouses and AI chats. Its MCP can also change campaigns, on every plan including Free.
Best for: Small teams and agencies that want a lot of data for a low price.
Where it falls down: It moves data. Building the report and acting on it is still your job.
- You want a free plan or the lowest monthly price.
- You need many accounts or a warehouse on a budget.
- You want unlimited users.
Questions
Yes. Windsor.ai has a free plan and paid plans from $19 a month billed yearly. Supermetrics starts at €39 a month for 2 sources and 1 user, and charges extra for more accounts, users and destinations.
No. Since May 2026 its MCP can create and edit campaigns on Google Ads and Meta and change budgets on LinkedIn, TikTok and Microsoft Ads, from Claude or ChatGPT. It is on every plan.
With Windsor.ai, yes: every plan includes BigQuery, Snowflake and other warehouses. With Supermetrics, warehouse destinations are on the Enterprise plan only.
Windsor.ai fits more clients for less money, because accounts are pooled and users are unlimited. Supermetrics tops out at 20 accounts per source before Enterprise. Agencies that want the reporting and account checks done for them look at Lemonado.
Windsor.ai scores higher on G2 (8.9 against 7.8) and Trustpilot. Supermetrics offers a customer success manager on Enterprise.
Not on their own. Both give an AI chat access to your data, and you ask the questions. Lemonado runs routines that check accounts, send reports and flag problems on a schedule.