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Apex vs Klaviyo
Find more high-value customers. Make every customer more valuable.
Klaviyo helps you unify customer profiles, email, SMS, RCS, WhatsApp, mobile push, automated flows, marketing analytics, and customer service. Apex connects how customers found you, what changed their behavior, and how much value they created, so you can acquire more customers like them and invest in the changes that work.
No credit card to start.Facts about Klaviyo checked 2026-09-22. Source: Klaviyo product overview, Klaviyo Email Automation Workflows, Klaviyo SMS Marketing, Klaviyo Marketing Analytics, Klaviyo Email A/B Testing, Klaviyo Advertising Attribution, Klaviyo Social Ambassador Programs, Klaviyo Pricing, Klaviyo Ecommerce Helpdesk
Apex vs Klaviyo: B2C CRM, marketing, analytics, and service
Measure customer value after costs and returns.
Klaviyo analyzes CLV, purchase behavior, and marketing impact; its published metrics don't describe lifetime gross profit from connected costs and returns. Apex lets you compare channels, campaigns, and customers by connected LTV and LTGP, so returns and supplied costs change the decision.
Experiment
Test each surface against a declared revenue outcome.
Test what makes customers more valuable.
Klaviyo tests email campaigns, flow emails, and SMS variants; its product pages don't document controlled web or app experiments. Apex lets you run separate experiments on web, app, email, push, and in-app messages against a declared revenue outcome, so each intervention gets its own causal result.
Start the experiment
Half get the first. Half get the second.
Apex tracks the winner
Counts who buys. +$174,650 a month.
Try it in Apex!
See how Apex connects an experiment to revenue.
1Create a variant
2Start the experiment
3Apex tracks the winner
4Promote the winner
Free to paid tournament
Preview in inboxes
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Skill Shotsupport@skillshotgolf.com9:41 AM
To: me
Keep the evidence
Turn each Outcome into evidence your organization can reuse.
Klaviyo keeps test history, analytics, and predictions, but it doesn't connect claims and Outcomes in a durable Belief Graph. Apex lets you store the claim, prediction, Outcome, and evidence in the Belief Graph, so the next decision starts from what your organization proved.
Belief graph · live
IF/THENDEPENDSCONFLICTS12 beliefs
Belief updated
Act
Run communications and partner programs from the same evidence.
Klaviyo acts through omnichannel flows and service; merchant-run affiliate recruitment, rate management, and payouts sit outside its documented platform. Apex lets you run Adaptive Journeys and merchant-owned partner programs from the same evidence, including affiliate recruitment, rates, attribution, and payouts.
Acquire
Follow paid mobile growth from click to customer value.
Connect acquisition to downstream customer value.
Klaviyo tracks ad influence with audience sync, UTMs, and linear attribution; it doesn't document ad-click-to-mobile-install attribution for native mobile campaigns. Apex lets you attribute paid mobile installs and conversions, return higher-value conversion signals to ad platforms, and compare partner performance with paid acquisition.
Connect ad platforms
Connect Meta, Google, LinkedIn, Microsoft, TikTok, and Reddit.
Meta
Try it in Apex!
See how Apex sends customer value back to acquisition.
1Connect ad platforms
2Post on your socials
3Track results
4Send value back
Connect ad platforms
Not connected
Meta Ads
Ad networksFacebook & Instagram campaign spend and performance
OAuth
ConnectNot connected
Google Ads
Ad networksCampaign spend, impressions, clicks, and conversions
OAuth
ConnectNot connected
LinkedIn Ads
Ad networksCampaign spend, impressions, clicks, and conversions
OAuth
ConnectNot connected
Microsoft Ads (Bing)
Ad networksCampaign spend, impressions, clicks, and conversions
OAuth
ConnectNot connected
TikTok Ads
Ad networksCampaign performance plus conversions and audiences
OAuth
ConnectNot connected
Reddit Ads
Ad networksCampaign performance plus outbound conversions
OAuth
ConnectCompound
Make every result strengthen the next decision.
Klaviyo compounds customer and campaign intelligence for B2C marketing; it doesn't connect product experiments, partner economics, and durable evidence. Apex lets you connect acquisition, communications, experiments, partner operations, and the Belief Graph in one evidence trail, so each Outcome improves the next decision.
The loop
- Observe
- Hypothesize
- Test
- Learn
- Act
- Observe
Pricing
Pay for usage, not permission.
Klaviyo says paid plans scale by contacts and channel usage; free sending stops above its profile or email limits. Apex lets you use every capability from day one, with separate usage meters and monthly allowances instead of seat or feature gates.
Monthly events
1.0MFree
1.0M free every month, then $0.000050 per event. Web + server + organic mobile.
Attributed conversions
1.5KFree
1.5K free every month, then $0.0500 per attribution. Paid-channel only. Organic activity counts as events.
Orchestrations
1.0MFree
1.0M free every month, then $0.000050 per orchestration. Assignments, journeys, branches, suppressions.
Messages
10KFree
10K free every month, then $0.000600 per send. Email + push + in-app inbox.
AI generations
50Free
50 free every month, then $0.0500 per generation. Subject lines, copy, recommendations.
Activations
100KFree
100K free every month, then $0.000100 per conversion. Server-side conversions to Meta, Google, LinkedIn.
Partner networkoptional
Active partners0
$2/active partner/mo (Stripe Connect at cost). Inactive partners are free.
Monthly partner revenueFree
Apex takes 1.5% + $0.50 per payout.
Questions
The questions that stop a switch.
What Apex replaces, what it doesn't, and what moving actually takes.
Apex can replace Klaviyo when you need communications, experimentation, attribution, partner operations, and profit evidence together. It isn't a full help desk.
If Klaviyo's ticket routing, omnichannel support inbox, or shopping assistant is load-bearing, plan for a specialist support product alongside Apex.
Sync customers, consent, and events to Apex, then move flows one at a time after suppression, deliverability, and revenue attribution checks.
No. The customer trail begins at the first measurable click, partner link, install, visit, sign-in, or purchase. Campaign-level impressions and spend stay aggregate until there is a measurable customer interaction.
No. Each surface runs its own experiment. They share the same customer history and definition of success, so the learning connects without pretending several experiments are one.
Apex is usage-based, with no base fee or seat fee. Monthly free allowances include 1,000,000 events, 1,500 paid-channel attributed conversions, 1,000,000 experiment orchestrations, 10,000 messages, 100,000 outbound activations, and 50 AI generations. Past the allowance, published usage rates apply, including $0.000050 per event and $0.000600 per message. Enterprise starts around $36,000 a year.
Your move
Don't stop at understanding behavior. Improve the business around it.
Klaviyo addresses B2C CRM, marketing, analytics, and service. Apex connects the systems that acquire, engage, experiment, and learn, so your team can prove what grew revenue and put it to work.