Klaviyo vs Postscript: which slows a Shopify store more?
Postscript is usually the lighter of the two. On the typical store it was light, while Klaviyo was heavy.
Both are email and SMS marketing apps. We measured Klaviyo on 496 Shopify ecommerce stores and Postscript on 59.
Side by side
| App | Typical processing time | Stores measured |
|---|---|---|
| Klaviyo | Heavy (300 ms to 1 second) | 496 |
| Postscript | Light (under 100 ms) | 59 |
Klaviyo was heavy on 48% of the stores it was measured on. Postscript was light on 98% of the stores it was measured on.
On stores that run both
55 of the stores we checked load both. Postscript took less processing time than Klaviyo on 53 of them.
Each band is an app's typical processing time across the stores it was measured on. Those stores differ from app to app. That makes the result on stores that run both the fairer test. Apps found on fewer than 20 stores aren't listed yet. The list grows as more stores are checked.
All apps in the index · How we measure these numbers
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