5 Shopify App Red Flags Every Seller Should Know
After three years running a Shopify store and installing 40+ apps, I've learned to spot trouble before it starts. Here are the warning signs.
1. The App Injects Scripts on Pages It Doesn't Need
Open your store in an incognito window → right-click → View Page Source. Search for the app's name or script tag. If an app's JavaScript appears on pages where it serves no purpose — like a review app loading on the checkout page, or a shipping calculator loading on the blog — it's injecting globally.
Global script injection is the #1 cause of app conflicts. Every script on a page is a potential collision with every other script. Good apps only load where they're needed. Bad apps load everywhere.
2. The App Hasn't Been Updated in 6+ Months
Go to the Shopify App Store listing. Scroll to the bottom. Look at "Last updated." If it's older than 6 months, the developer has likely moved on. Shopify updates its APIs, themes evolve, browsers change — an unmaintained app is a ticking time bomb.
I learned this the hard way with a currency converter that stopped working after a Shopify API change. The app had 4-star reviews — from two years ago. The developer never updated it. My international customers saw broken prices for three weeks before I noticed.
3. The Reviews Mention "Slowed Down My Store"
Sort reviews by "Most Recent," not "Most Helpful." Ctrl+F for "slow," "speed," "performance," "loading." If multiple recent reviews mention speed issues, believe them.
Some apps load heavy JavaScript, external fonts, tracking pixels, or large JSON data on every page. One "trust badge" app I tested added 1.2 seconds to my page load time. The badge looked nice. The speed penalty cost me more in conversion than the badge ever recovered.
4. The Uninstall Process Is Complicated
Good apps: uninstall from Shopify admin → clean removal. Bad apps: leave behind theme code, metafields, script tags, or custom CSS that you have to manually hunt down.
Before installing any app, check: does the listing mention a clean uninstall? Does the support documentation explain removal? If uninstall instructions are hidden or nonexistent, assume the app will leave a mess.
5. The Pricing Is "Contact Us" or Unclear
If the App Store listing says "Free to install" but the description never mentions actual pricing, the real cost is buried behind a paywall you'll hit after setup. Similarly, "Contact us for pricing" on a simple utility app usually means they're charging enterprise rates.
The One-Minute App Vetting Routine
I now do this for every app before installing:
- Check "Last updated" date — pass if < 3 months
- Read the 5 most recent reviews — pass if no performance complaints
- Search the app name + "uninstall" on Google — pass if clean removal is documented
- Find pricing — pass if it's clearly stated
Two minutes of vetting has saved me from at least five bad installs. The patterns are predictable once you know what to look for.
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