The Signature App of Every Shopify Niche

Every Shopify store runs reviews, email and analytics, so a list of the most installed apps looks the same in almost every niche. The interesting question is what each niche adds on top. For every niche with enough stores to measure, this study finds the app that is most over-represented there compared with Shopify as a whole: the app that tells you which market a store is in.

Updated October 12, 2026. Part of the Shopify Niche Index, refreshed every Monday from Koala's own store data.

The headline findings

The strongest signatures this week:

• Games stores are 139x as likely as the average Shopify store to run Board Game Atlas Listings (5.2% of them, against 0% of all stores).
• Cannabis Products stores are 136x as likely as the average Shopify store to run AgeChecker.Net ‑ Age Verifier (2.7% of them, against 0% of all stores).
• Tobacco Products stores are 128x as likely as the average Shopify store to run AgeChecker.Net ‑ Age Verifier (2.5% of them, against 0% of all stores).
• Music & Sound Recordings stores are 108x as likely as the average Shopify store to run Single: musicians & creators (13% of them, against 0.1% of all stores).
• Lighting stores are 58x as likely as the average Shopify store to run Sign Customiser ‑ SF (2% of them, against 0% of all stores).
• Digital Goods & Currency stores are 47x as likely as the average Shopify store to run Digital Downloads ‑ Fileflare (3.6% of them, against 0.1% of all stores).
• Business Services stores are 40x as likely as the average Shopify store to run Gang Sheeter (3.9% of them, against 0.1% of all stores).
• Vehicle Parts & Accessories stores are 37x as likely as the average Shopify store to run Year Make Model ‑ EasySearch (3.5% of them, against 0.1% of all stores).

What the signatures have in common

Most signature apps solve one practical problem that the niche cannot sell without. Drinks, tobacco and cannabis stores need an age check at the door. Car parts stores need shoppers to search by year, make and model, or they order the wrong part. Food, plant and book stores lean on local delivery and pickup scheduling, and baby stores on gift registries. Clothing and shoe stores install size charts and color swatches, because fit and variant choice are what their shoppers need help with.

That makes the table a shortcut for anyone entering a niche. The signature app is often the thing a shopper in that market expects to find, and a store without it looks out of place.

Every niche and its signature app

The multiple in the "vs all Shopify" column is the app's share of stores in the niche divided by its share across every live Shopify store. A 3x app runs on three times as many stores, proportionally, as it would if niche made no difference. The runners-up column shows the next two apps by the same measure.

How to use this as a store owner

Find your niche in the table and check whether you run its signature app or something that does the same job. If you don't, look at how the leading stores in your niche use it before deciding: the Shopify Niche Index ranks the biggest stores in each market, and Koala Inspector's free app detector shows every app a store runs, grouped by what it does.