Marjn – Real Margin & Profit
Your store shows revenue, but revenue is not profit. The built-in AI estimates margin, yet it cannot see your real landed cost or ad spend, so the number is a guess. Marjn fixes this. You set the true cost per product, and Marjn reads your live order revenue and connected Meta ad spend to calculate your actual margin. Then you ask Sidekick a profit question and get a real answer instead of an estimate.
How It Works
- You input the true cost per product, including shipping, fulfillment, and any other expenses.
- Marjn connects to your live order data to track revenue from each sale.
- It pulls Meta ad spend data to account for advertising costs in margin calculations.
- Using this data, Marjn computes your actual profit margin in real time.
- You can ask Sidekick questions like ‘What is my profit after ads?’ and receive accurate answers.
Privacy & Security
Marjn only uses order amounts and does not store customer names, emails, or addresses.
| Feature | Description |
|---|---|
| Real-time Margin Calculation | Based on live order revenue and Meta ad spend |
| True Cost Input | You define the actual cost per product |
| Data Privacy | Does not store customer names, emails, or addresses |
| Integration | Connects with your store and Meta Ads |
FAQ
How does Marjn calculate actual profit margin?
Marjn calculates actual profit margin by using your set true cost per product, live order revenue, and connected Meta ad spend to determine real-time profit.
Can I update the cost per product after it’s set?
Yes, you can update the cost per product at any time to reflect changes in your supply chain or fulfillment costs.
Does Marjn access customer personal information?
No, Marjn only uses order amounts and does not store or access customer names, emails, or addresses.

David Mathis –
Marjn finally gave me a clear view of real profit after ads. I used to rely on estimates, but now I know exactly how much I’m making. The integration with Meta Ads is smooth and the cost input is easy to manage. It’s changed how I plan my inventory and ad budgets.
Diane Howard –
Before Marjn, I was making decisions based on revenue, not profit. Now I can see the true margin after ad spend. The Sidekick feature answers questions instantly and helps me adjust pricing quickly. Very practical for small e-commerce stores.
Julian Powell –
It’s accurate and straightforward. I set the cost per item and it tracks revenue and ad spend automatically. The only minor issue is that it takes a few days to sync with Meta Ads initially, but after that, it’s reliable.
Joseph McLean –
I run a small Shopify store and used to misjudge my profitability. Marjn has given me real data to make better decisions. No personal data is stored, which is a big plus for privacy. Highly recommend.