Marginal vs Skail ‑ AI Ecosystem Analyst
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026.
The short answer
- Only Marginal lists a free plan. Paid plans start at $59/month for Marginal and $99/month for Skail.
- Marginal lists 3 features Skail’s listing doesn’t mention, including Historical analysis, Marketing attribution, Profit insights.
Head to head
Free
- · Daily Shopify order sync
- · Daily written recommendations
- · No card needed
- · Revenue, orders and Meta ad spend
Marginal Growth
- · Ask Analyst questions in plain English
- · Blended CAC and ROAS across channels
- · Daily written Executive Summary
- · Meta, Google, TikTok and Pinterest
Marginal Pro
- · Cost coverage shown with every figure
- · Everything in Growth
- · Gross margin from Shopify product costs
- · Gross profit tracked with revenue
Pro
- · 24-month sales, traffic, conversion data
- · Ask Skail: live analyst chat, on demand
- · Branded PDF audit & strategy reports
- · Every number verified, never estimated
- · Klaviyo, GA4, Google, Meta & QuickBooks
- · Monthly Owner's Brief + strategic plan
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureMeta, Google and TikTok each take credit for the same sale, so their dashboards can add up to more revenue than your store made. Marginal reads your Shopify orders and every ad account each morning and gives you one honest number: total ad spend against what really sold. A written report explains what changed and why, Recommendations rank what to look at first, and Ask Analyst answers questions about your own data.
Your store leaks profit where dashboards do not look: ad spend past breakeven, dead flows, bot-inflated numbers. Skail is a whole analytics team in one. It reads Shopify, Klaviyo, GA4, Google, Meta and QuickBooks read-only and reconciles them into one honest picture. Connect your books and it computes your true breakeven ROAS from your own margin.
- Blended ROAS and CAC across every channel, against real Shopify revenue
- A written report every morning, with the sources behind every claim
- Ask questions in plain English and get answers from your own data
- Recommendations ranked by urgency, with the numbers behind each one
- Read-only connection: Skail never writes to or changes anything in your store
- Monthly audit: what happened, what it means, and the moves to make next
- Weekly pulse flags anomalies between audits so nothing slips by
- Every number verified against a live data pull, never estimated
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  Marginal |  Skail |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | Marginal | Skail |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 2 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
FAQ
Marginal and Skail: common questions
- Is Marginal or Skail cheaper?
- Only Marginal lists a free plan. Paid plans start at $59/month for Marginal and $99/month for Skail. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- Marginal lists 3 the others don’t mention, such as Historical analysis, Marketing attribution, Profit insights. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 13, 2026; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 13, 2026. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.