OngoingAI

Klaviyo usage & market intelligence

OngoingAI has observed Klaviyo on 55,533 ecommerce stores across 6 platforms.

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Stores observed

55,533

Ecommerce stores where OngoingAI has observed it

Shopify adoption

92%

50,875 Shopify stores

Shopify rating

4.7 ★

3,277 reviews

Last checked Sep 8, 2026

Adoption movement
Installs and removals confirmed across repeat observations of the stores OngoingAI tracks

Growing — 131 more confirmed installs than removals over the past 90 days.

WindowConfirmed installsConfirmed removalsNetNewly observed
Last 30 days444313+13155,350
Last 90 days444313+13155,350

Newly observed counts first appearances of Klaviyo in OngoingAI's corpus — discovery, not necessarily a new install. Confirmed figures require the store to be seen with, then without, the app (or the reverse) across consecutive comparable scans.

What merchants actually report
4.65average· 3,052 reviews analyzed· 2,184 with written feedback
89% 5★9% ≤3★

47% of attributable reviewers are United States merchants. 43% had used the app for a year or more when they reviewed.

The developer replies to 49% of reviews overall and 53% of critical ones.

Recent reviewers rate Klaviyo 4.87, above its 4.65 lifetime average.

Rating · last 90d

4.87

Recent direction

Replies to reviews

49%

Developer response rate

Replies to critical

53%

On 3★ and below

Long-term reviewers

43%

Using 1yr+ at review

Top merchant markets

United States 47%United Kingdom 10%Australia 8%Canada 5%Germany 3%

Tenure when reviewed

under a day 6%days 14%months 37%a year or more 43%

Based on public merchant reviews, with newer feedback given more weight. OngoingAI matches each review to an identifiable store and the app they use.

Klaviyo adoption by ecommerce platform
Platforms used by stores where OngoingAI has observed Klaviyo
55,533stores
Shopify50,875 stores · 92%
92%
WooCommerce2,054 stores · 4%
4%
Magento (Adobe Commerce)1,200 stores · 2%
2%
BigCommerce885 stores · 2%
2%
PrestaShop400 stores · 1%
1%
Square Online88 stores · 0%
0%
Notable stores using Klaviyo: Email Marketing & SMS
Observed installs, highest-ranked first
StoreTraffic rankCohort
wyzecam.com
#863Top 1K
shop.nu.nl
#1,190Top 10K
webwinkel.ad.nl
#1,198Top 10K
uk-store.msi.com
#3,333Top 10K
us.arlo.com
#3,664Top 10K
prestashop-93073-1298665.cloudwaysapps.com
#6,057Top 10K
shop.cinemark.com
#6,556Top 10K
wyze.com
#6,650Top 10K
shop.invisalign.com
#6,748Top 10K
jbhifi.com.au
#6,749Top 10K

Showing 10 of 55,533 stores we track running Klaviyo.

Get the full list
Pricing
Free to install
FreeFree to install
  • • Sync Shopify data–tags, catalog, coupons
  • • Templates for Email/SMS
  • • Forms & push notifications
  • • Segmentation & personalization
  • • A/B testing
SMS$15/month
  • • Multi-channel segmentation and flows
  • • Smart opt-in & multi-channel list growth
  • • SMS AI for campaign creation
  • • Automated two-way conversations
  • • Transactional SMS
Email$20/month
  • • Multi-channel segmentation and flows
  • • Personalized product recommendations
  • • Reputation repair AI for deliverability
  • • Email AI for campaign creation
  • • Send time optimization
What does Klaviyo do?

Klaviyo is a leading email and sms marketing app for Shopify. Improve your marketing ROI with our templates to deliver personalized email and sms campaigns.

  • Unify and activate real-time data from Shopify and 350+ apps across the journey
  • Use Composer to build launch-ready, on-brand marketing campaigns across channels
  • Create AI-powered segments and flow triggers using historical and real-time data
  • Drive conversions with personalized email, SMS, WhatsApp, mobile push & pop-ups
  • Turn service moments into shopping moments with Customer Hub and Customer Agent

Features

Email marketingEmail campaignsSMS campaignsPush notificationsNewslettersPop-upsFormsDiscountsPromotionsUpsell emailsCross-sell emailsCart emailsCheckout emailsExit intentAbandoned cartBrowse abandonmentWelcome emailsFollow-up emailsPrice drop emailsBack-in-stock emailsWin-back emailsProduct recommendationsDrip campaignsSubscriptionsProduct reviewsCustom campaignsEditor toolTemplatesAI generationLocalizationCustom codeCustom fontsBulk editingImport and exportEmail domainsConsent collectionEmail capture listSMS capture listTriggers and rulesAutomations
Review history
Daily review count on the Shopify App Store
3,277+324 · 29d~11/day· Rating steady at 4.7★
Aug 10Sep 7

Daily tracking from Aug 10, 2026 through today · 28 days observed · sign up free for the full history →

Category rankings
Live organic position on Shopify App Store category pages
  • Email marketing#1
  • SMS marketing#1

Tracked daily · last 26 days · as of 2026-09-08

Catalog position
Within Email marketing on the App Store
Rank by reviews
#3 of 315
Review percentile
99th
Rating percentile
72th
On the App Store
14 yrs
Commonly used with
Share of Klaviyo: Email Marketing & SMS stores that also run each app
Judge.me15,771 stores
28%
Microsoft Clarity12,425 stores
22%
Instafeed (Mintt Studio)8,145 stores
15%
Triple Whale5,531 stores
10%
Google Ads4,593 stores
8%
Gorgias4,428 stores
8%
Trustpilot4,393 stores
8%
Shopify Forms4,027 stores
7%
Competitors
Alternatives buyers weigh against Klaviyo: Email Marketing & SMS
See the full Klaviyo alternatives comparison
Compare Klaviyo head-to-head
Side-by-side on ratings, momentum, pricing, and adoption
All app comparisons
Works with
Integrations listed for Klaviyo: Email Marketing & SMS
CheckoutCustomer accountsShopify FlowAftershipGorgiasMeta AdvertisingRechargeTikTok AdvertisingTypeform
Apps similar to Klaviyo
The App Store's own "more apps like this" for Klaviyo
Shopify Messaging
4.7(4,442)

Free to install

Omnisend Email Marketing & SMS
4.7(3,177)

Free to install

Mailchimp Email SMS Marketing
4.8(1,441)

Free plan available

Frequently asked questions

Klaviyo is a leading email and sms marketing app for Shopify. Improve your marketing ROI with our templates to deliver personalized email and sms campaigns. It's a email marketing tool for ecommerce stores.