Every app can change your store.
Mack keeps watch.
Mack monitors your apps, finds hidden code, backs up your theme and restores it in one click.
"Every broken store has a culprit. I simply find it."
A look inside Mack's toolkit
These are the tabs you'll find in the app. Click one to see what it does.
Dashboard
Your store at a glance. See your risk level, how many apps and theme files Mack is watching, when it last checked, and the next thing worth doing.
"The whole case, on one page."
Apps
Every app that adds code or scripts to your store, each with a risk score, plus any app code written straight into your theme files. See which ones are most likely to cause trouble.
"Every suspect, lined up."
Conflicts
Check whether any of your apps are known to clash with each other, so you can act before they break something.
"Some apps simply cannot share a room."
Leftover Code
Scan your theme for code left behind by apps you've uninstalled. Old code like this can slow your store down and clash with the apps you use now.
"The app has gone. Its fingerprints have not."
Timeline
See how your store's performance changed after each app was installed or updated, so you can spot the moment things went wrong.
"Follow the clues back to the moment it changed."
Rollback
Pick a date and put your theme back to how it was. You can also restore single files and see a record of every restore. Restore is on the Detective and Pro plans.
"Let us put things back as they were."
Community
See problems other store owners have reported with your apps on Reddit and community forums, and report an app yourself.
"Store owners talk. I listen."
Why stores break without warning
Most of the time you never see it. Until something breaks.
"The app world is the Wild West. Lucky for you, I'm the sheriff."
Apps edit your theme
Reviews, popups, upsells and page builders all add code to your theme, and updates can change it again without asking.
They leave code behind
Uninstall an app and its code often stays, slowing your store and clashing with the apps you add next.
Finding the culprit takes days
Guessing, uninstalling apps one by one and waiting on support, while sales slip away.
Mack is your store's detective
He keeps watch, keeps a record and keeps a backup, so when something goes wrong you know who did it and can put it right.
"The tools of my trade."
See which app changed what
Mack records changes to your theme and scripts and names the app most likely behind each one, and when.
Undo it in one click
Put your whole theme back to how it was on an earlier date. Only the files that changed get rewritten.
Find hidden code
Spot code left behind by apps you removed long ago, so you can clean it out.
Get alerts
Know when an app adds or changes code on your store, without checking yourself.
Check an app before you install it
See what other store owners are saying about an app, from Reddit and community reports.
Up to a year of backups
Free shows you what changed. Detective keeps 90 days of restorable backups and Pro a full year, ready for the day you need them.
How it works
No code to add and nothing on your storefront. Mack works quietly in the background.
"I do my best work in the small hours, while your store sleeps."
Install MacSleuth
Add it from the Shopify App Store. Start on the Free plan or try a paid plan free for 7 days.
Mack keeps watch
He checks your theme every night on paid plans, or every week on Free, and backs up anything that changes.
Something breaks? Fixed in minutes, not days.
Mack names the app most likely behind it and shows exactly what it changed. One click puts your theme back the way it was, so you can get back to selling.
Simple pricing
Start free. Upgrade when you want nightly checks, longer history and one-click restore.
"Even a detective must eat. But the first consultation is always free."
Weekly check, see what changed (no restore)
Nightly checks, 90-day history, one-click restore
Everything in Detective, a full year of history, priority support
Contact us
Questions, ideas or a store that needs a second pair of eyes? Send us a message and a real person will get back to you.
Don't wait for the next thing to break
Install MacSleuth free today and Mack starts watching your theme straight away.
"All quiet on the storefront. Shall I keep watch?"
Install free on Shopify