How we tested
We installed each app on a clean Online Store 2.0 theme with 40 products, ran a Lighthouse audit before and after install, and tried to add a “Sale” badge, a “New” badge, and a custom badge targeted to a collection.
We scored each app on whether the free tier was actually useful, how much setup was required, whether the storefront got slower, and whether basic features were gated.
What surprised us
The review counts in this category are misleading. The apps with the biggest review numbers are usually the oldest and have accumulated reviews across older Shopify themes. When you test them on a fresh OS 2.0 theme today, the newer apps render cleaner and faster.
The other surprise: badge apps that bundle extra features, like social proof popups, tend to score worse on storefront performance than the single-purpose badge apps.
Which one should you pick
If you are a small store and money matters, pick the app with the widest free tier and the cleanest render. If you are a larger brand that wants a big template library and does not mind the price, pick the mature incumbent. But most merchants we talked to wanted the basic thing for free, which is exactly why we built ours.