Cassian vs MacSleuth
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 14, 2026 for Cassian, Oct 29, 2026 for MacSleuth.
The short answer
- Both list a free plan. Paid plans start at $49/month for Cassian and $9.99/month for MacSleuth.
- Cassian lists 2 features MacSleuth’s listing doesn’t mention, including Custom dashboards, Custom reports.
Head to head
Inspector
- · 1 site, 10 pages monitored
- · AI discoverability checks
- · Core Web Vitals monitoring
- · Critical pricing change alerts
- · Health score with prioritised findings
- · Sitemap and page speed monitoring
Analyst
- · 2 scans per week
- · 500 pages per scan
- · AI product feeds (5K products)
- · Cassian Shield security scans
- · Full content quality analysis
- · Order drop + pricing alerts
Protector
- · 2,000 pages per scan
- · AI product feeds (25K products)
- · Cassian Shield security scans
- · Daily link + sitemap monitoring
- · Daily scans
- · Full Order + Pricing Pulse
Guardian
- · 5,000 pages per scan
- · 90-day screenshot history
- · AI product feeds (100K products)
- · Cassian Shield security scans
- · Daily pricing monitoring
- · Daily scans + uptime (5 min)
Free
- · 7-day theme history
- · Alerts when your theme changes
- · Weekly scan
Detective
- · 90-day theme history
- · Find which app broke your store
- · Leftover app code finder
- · Nightly theme monitoring
- · One-click theme restore
Pro
- · 365-day theme history
- · Everything in Detective
- · Priority support
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureCassian connects to your store and watches it continuously, so you hear about problems before your customers do. It monitors your order flow and tells you when orders slow, which is often the first sign that a shipping rules has broken. It tracks every product price and flags zero-dollar, inverted and bulk changes.
Your store just broke. Which app did it? Every app you add can change your theme. When something goes wrong, you can lose days guessing, uninstalling apps one by one and waiting on support while sales slip away. MacSleuth is your store’s detective. It backs up your theme, tracks every change apps make, names the app most likely behind it, and finds hidden code left by apps you deleted long ago.
- One health score that tells you what to fix and what's fine across your store
- Continuous uptime, page speed, and broken link monitoring with weekly digests
- Content and translation quality checks so every page reads well everywhere
- AI product feeds that make your catalog visible to AI shopping assistants
- Ongoing monitoring for brand misuse and impersonation risks
- Detection of trust-related issues that may impact store credibility
- Alerts when potential issues require merchant attention
- Centralised view of monitoring status and findings
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 |  Cassian |  MacSleuth |
|---|---|---|
| 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 | Cassian | MacSleuth |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
FAQ
Cassian and MacSleuth: common questions
- Is Cassian or MacSleuth cheaper?
- Both list a free plan. Paid plans start at $49/month for Cassian and $9.99/month for MacSleuth. 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?
- Cassian lists 2 the others don’t mention, such as Custom dashboards, Custom reports. MacSleuth lists 2 the others don’t mention, such as Historical analysis, Notifications. 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 14, 2026 for Cassian, Oct 29, 2026 for MacSleuth; 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 14, 2026 for Cassian, Oct 29, 2026 for MacSleuth. 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.