Shopify app comparison · updated Aug 25, 2026
Brevo PushOwlvs
Klaviyo
Compare Brevo PushOwl and Klaviyo for Shopify email marketing using current ratings, review activity, pricing, features, and OngoingAI-observed adoption.
Brevo PushOwl
Brevo PushOwl: Email,Push,SMS
Grow Sales using Brevo PushOwl Email Marketing, Email PopUp, Web Push Notifications, & SMS Marketing
- Rating
- 4.80
- Reviews
- 2,030
- Review growth · 30d
- +8 · +0.4%
- Pricing
- Free plan available
- Years on Shopify
- 9
- Stores observed
- 557
Klaviyo
Klaviyo: Email Marketing & SMS
Build email marketing, SMS, and WhatsApp campaigns powered by AI to grow ecommerce sales.
- Rating
- 4.70
- Reviews
- 3,007
- Review growth · 30d
- +54 · +1.8%
- Pricing
- Free to install
- Years on Shopify
- 14
- Stores observed
- 34,345
Our read
- Ratings
- Brevo PushOwl higher (4.80 vs 4.70)
- Review growth
- Klaviyo faster (+1.8% vs +0.4%)
- Review depth
- Klaviyo 1.5× more reviews
- Adoption
- Klaviyo larger (34,345 vs 557)
OngoingAI's data favors Klaviyo on observed Shopify adoption (34,345 vs 557 stores), backed by a larger review base.
Head-to-head
The signals, side by side.
Each row reads straight from the live App Store listing and OngoingAI’s census. The Difference column states the gap — not a buyer recommendation.
| Dimension | Brevo PushOwl | Klaviyo | Difference |
|---|---|---|---|
| Rating | 4.80 | 4.70 | Brevo PushOwl +0.10 |
| Reviews | 2,030 | 3,007 | Klaviyo 1.5× |
| Review growth · 30d | +8 · +0.4% | +54 · +1.8% | Klaviyo faster |
| Listed pricing | Free plan available | Free to install | Not directly comparable |
| Years on Shopify | 9 | 14 | Klaviyo +5y |
| Stores observed | 557 | 34,345 | Klaviyo leads |
Which fits your requirements?
Choose by what you actually need.
Choose Brevo PushOwl if…
- You need surveys
- You need targeting
- A higher App Store rating is a priority
Choose Klaviyo if…
- You need product reviews
- You need bulk editing
- Recent review-growth signals matter to you
- A larger observed Shopify footprint is reassuring
Tied to observable requirements only — listed capabilities, ratings, review growth, adoption and price. It doesn’t assert usability or support quality.
Feature differences
95% of listed capabilities overlap.
These apps cover largely the same ground. The decision material is what each lists that the other doesn’t.
Brevo PushOwl only
2
- Surveys
- Targeting
Klaviyo only
2
- Product reviews
- Bulk editing
Show 38 shared capabilities
- Email marketing
- Email campaigns
- SMS campaigns
- Push notifications
- Newsletters
- Pop-ups
- Forms
- Discounts
- Promotions
- Upsell emails
- Cross-sell emails
- Cart emails
- Checkout emails
- Exit intent
- Abandoned cart
- Browse abandonment
- Welcome emails
- Follow-up emails
- Price drop emails
- Back-in-stock emails
- Win-back emails
- Product recommendations
- Drip campaigns
- Subscriptions
- Custom campaigns
- Editor tool
- Templates
- AI generation
- Localization
- Custom code
- Custom fonts
- Import and export
- Email domains
- Consent collection
- Email capture list
- SMS capture list
- Triggers and rules
- Automations
Observed adoption
Who actually runs each, on real stores.
The stores OngoingAI’s weekly census observes running each app, and the platform each skews toward — observed presence, not vendor-reported install totals.
Brevo PushOwl
557
stores observed
Skews Shopify · 99%
Klaviyo
34,345
stores observed
Skews Shopify · 89%
Scope
What this comparison measures.
What it measures
Shopify App Store ratings, review counts and 30-day review growth, listed pricing and capabilities, category data, and OngoingAI-observed storefront adoption for Brevo PushOwl and Klaviyo.
What it doesn’t
Hands-on usability, customer-support quality, deliverability, merchant sentiment from review text, or revenue impact. We draw a sharp line around what we can observe.
Methodology
Where the numbers come from.
Ratings, review counts, pricing, and categories come from the live Shopify App Store listing, refreshed daily. Review growth compares the observed snapshots across the trailing 30-day window. “Stores observed” and the platform split come from OngoingAI’s weekly storefront census — the real stores running each app, not the listing’s claimed totals. Comparison generated Aug 25, 2026.
See who’s switching — as it happens.
Track app adoption on live ecommerce stores. Find merchants running Brevo PushOwl or Klaviyo, follow stack changes, and see when a store installs, removes, or replaces an app.