Shopify app comparison · refreshed
Klaviyo vs Omnisend Email Marketing & SMS
Two of the largest print-on-demand apps in the Shopify ecosystem, compared on the dimensions merchants actually weigh: ratings, review-count momentum over the last year, pricing, customer-support sentiment, bugs, and what reviewers uniquely call out. Built from 5,886 live Shopify App Store reviews.
Klaviyo
Klaviyo: Email Marketing & SMS
AI marketing and customer service automation for email marketing, SMS, and WhatsApp to grow faster.
- Rating
- 4.70
- Reviews
- 2,921
- 12-mo Δ reviews
- +129
- 12-mo Δ rating
- +0.10
- Pricing
- From $15/mo
- Built for Shopify
- No
Omnisend
Omnisend Email Marketing & SMS
Run email marketing & SMS campaigns with AI marketing tools. Collect emails with popups & sell more.
- Rating
- 4.80
- Reviews
- 2,965
- 12-mo Δ reviews
- +12
- 12-mo Δ rating
- +0.00
- Pricing
- From $16/mo
- Built for Shopify
- No
What the data says
Omnisend Email Marketing & SMS carries the rating edge (0.10 stars). Klaviyo added more reviews last year.
Both apps live in the same Shopify category but merchants describe them differently. Klaviyo reviewers disproportionately call out integration depth and predictable fulfillment; Omnisend Email Marketing & SMS reviewers disproportionately call out provider choice and unit-cost pricing. The decision usually comes down to which one of those two failure modes hurts your business more.
Side-by-side by axis
What merchants actually say.
Semantic search across the review corpus, bucketed by sentiment, with the strongest positive and negative quotes per side.
customer support
Klaviyo
0% positive · avg rating —
No standout quotes yet — corpus is still warming.
Omnisend Email Marketing & SMS
0% positive · avg rating —
No standout quotes yet — corpus is still warming.
pricing
Klaviyo
0% positive · avg rating —
No standout quotes yet — corpus is still warming.
Omnisend Email Marketing & SMS
0% positive · avg rating —
No standout quotes yet — corpus is still warming.
ease of use
Klaviyo
0% positive · avg rating —
No standout quotes yet — corpus is still warming.
Omnisend Email Marketing & SMS
0% positive · avg rating —
No standout quotes yet — corpus is still warming.
onboarding
Klaviyo
0% positive · avg rating —
No standout quotes yet — corpus is still warming.
Omnisend Email Marketing & SMS
0% positive · avg rating —
No standout quotes yet — corpus is still warming.
bugs
Klaviyo
0% positive · avg rating —
No standout quotes yet — corpus is still warming.
Omnisend Email Marketing & SMS
0% positive · avg rating —
No standout quotes yet — corpus is still warming.
performance
Klaviyo
0% positive · avg rating —
No standout quotes yet — corpus is still warming.
Omnisend Email Marketing & SMS
0% positive · avg rating —
No standout quotes yet — corpus is still warming.
What each is known for
Themes reviewers raise.
The topics that surface most across reviews — the shared backbone and what each app is uniquely known for.
Klaviyo
- customer-support223
- pricing131
- ease-of-use49
- onboarding34
- bugs31
- bug26
- performance25
- billing-issues24
Uniquely ease-of-use · onboarding · performance · billing-issues · billing
Omnisend Email Marketing & SMS
- customer-support3
- missing-features1
- pricing1
- bug1
- email-automation1
- bugs1
- reliability1
- account-management1
Uniquely email-automation · reliability · account-management · sms-campaigns
Shared themes
Same Shopify categories
Methodology
Where the numbers come from.
Ratings, review counts, pricing, and the “Built for Shopify” flag come from the live Shopify App Store listing — refreshed daily. Trend deltas compare the snapshot from 365 days ago against today. Sentiment counts and quotes are derived from semantic search across the live review corpus, bucketed by rating sign — every quote on this page is a real review, not a paraphrase. Snapshot generated .
Watch the next stack change as it happens.
Ongoing.AI tracks every Shopify brand’s app stack daily. Find the merchants running Klaviyo or Omnisend Email Marketing & SMS, and the moment they switch.