Shopify app comparison · updated Sep 15, 2026
Klaviyo vs Attentive
Compare Klaviyo and Attentive for Shopify email marketing using current ratings, review activity, pricing, features, and OngoingAI-observed adoption.
Klaviyo
Klaviyo: Email Marketing & SMS
Build email marketing, SMS, and WhatsApp campaigns powered by AI to grow ecommerce sales.
- Rating
- 4.70
- Reviews
- 3,293
- Review growth · 30d
- +321 · +10.8%
- Pricing
- Free to install
- Years on Shopify
- 14
- Stores observed
- 67,821
Attentive
Attentive: AI‑led Email &SMS
AI-powered mobile email and SMS marketing platform enabling personalization at scale.
- Rating
- 4.70
- Reviews
- 112
- Review growth · 30d
- +6 · +5.7%
- Pricing
- Free to install
- Years on Shopify
- 6
- Stores observed
- 2,604
Our read
Klaviyo has the stronger observed market footprint in OngoingAI's data — it appears on 26.0× more tracked stores and carries 29.2× the App Store review depth. Ratings and recent review growth are closer.
- Rating
- Level4.7 vs 4.7
- Review growth
- Klaviyo faster+10.8% vs +5.7%
- Review depth
- Klaviyo29.2× more reviews
- Observed adoption
- Klaviyo26.0× more tracked stores
Review trajectory
How each app's Shopify reviews are moving.
Daily App Store review counts since we began tracking — who's gaining reviews fastest, who holds the larger base, and how the race is developing.
Klaviyo leads total reviews and is adding them fastest over the tracked window.
Reviews each app has gained since the start of this tracking window. · Tracking window · Aug 17 – Sep 14, 2026
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 | Klaviyo | Attentive | Difference |
|---|---|---|---|
| Rating | 4.70 | 4.70 | Level |
| Reviews | 3,293 | 112 | Klaviyo 29.2× |
| Review growth · 30d | +321 · +10.8% | +6 · +5.7% | Klaviyo faster |
| Listed pricing | Free to install | Free to install | Not directly comparable |
| Years on Shopify | 14 | 6 | Klaviyo +8y |
| Stores observed | 67,821 | 2,604 | Klaviyo leads |
Review corpus
What merchants actually report.
Klaviyo
4.65 avg · 3,072 reviews
Attentive
4.70 avg · 106 reviews
| Signal | Klaviyo | Attentive | Difference |
|---|---|---|---|
| 5-star share | 89% | 90% | Level |
| Rating · last 90 days | 4.88 | — | Level |
| Replies to reviews | 49% | 26% | Klaviyo leads |
| Replies to critical (≤3★) | 53% | 38% | Klaviyo leads |
| Long-term reviewers (1yr+) | 43% | 67% | Attentive leads |
| Top market | United States 47% | United States 84% | — |
| Reviews analyzed | 3,072 | 106 | — |
Based on public merchant reviews, with newer feedback given more weight. OngoingAI matches each review to an identifiable store and the app they use.
Which fits your requirements?
Choose by what you actually need.
Choose Klaviyo if…
- You need email campaigns
- You need push notifications
- You need newsletters
- Recent review-growth signals matter to you
Choose Attentive if…
- You need segmentation
- You need analytics
- You need a/b testing
Tied to observable requirements only — listed capabilities, ratings, review growth, adoption and price. It doesn’t assert usability or support quality.
Feature differences
What Klaviyo and Attentive each do that the other doesn’t.
They cover largely the same ground — 35% of listed capabilities overlap. The decision material is the rest: what each lists that the other doesn’t.
Klaviyo only
26
- Email campaigns
- Push notifications
- Newsletters
- Forms
- Discounts
- Promotions
- Upsell emails
- Cross-sell emails
- Exit intent
- Welcome emails
- Follow-up emails
- Price drop emails
- Win-back emails
- Drip campaigns
- Subscriptions
- Product reviews
- Editor tool
- Templates
- Localization
- Custom code
- Custom fonts
- Bulk editing
- Import and export
- Email domains
Attentive only
11
- Segmentation
- Analytics
- A/B testing
- APIs and webhooks
- SMS marketing
- Personalized messages
- Real-time analytics
- ROI tracking
- Subscription renewals
- Welcome messages
- Win-back campaigns
14 shared capabilities
- Email marketing
- SMS campaigns
- Pop-ups
- Cart emails
- Checkout emails
- Abandoned cart
- Browse abandonment
- Back-in-stock emails
- Product recommendations
- Custom campaigns
- AI generation
- Email capture list
- SMS capture list
- 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.
Klaviyo
67,821
stores observed
Skews Shopify · 93%
Attentive
2,604
stores observed
Skews Shopify · 94%
Scope
What this comparison measures.
What it measures
Shopify App Store ratings and review counts, rating distribution, developer reply rates, reviewer tenure and geography, listed pricing and capabilities, category data, and OngoingAI-observed storefront adoption for Klaviyo and Attentive.
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 Sep 15, 2026.
See who’s switching — as it happens.
Track app adoption on live ecommerce stores. Find merchants running Klaviyo or Attentive, follow stack changes, and see when a store installs, removes, or replaces an app.