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Apex vs PostHog
PostHog helps you analyze product behavior, run feature-flag experiments, automate lifecycle messages, and move data through an integrated warehouse and CDP. 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 PostHog checked 2026-09-22. Source: PostHog Product Analytics, PostHog Experiments, PostHog Workflow Builder, PostHog Workflow Channels, PostHog CDP, PostHog Revenue Metrics, PostHog AppsFlyer Source, PostHog impact.com Source, PostHog Pricing, PostHog Self-hosting
Apex vs PostHog: product analytics and developer tools
PostHog's native revenue views calculate revenue and LTV; customer profit still requires warehouse modeling for costs and returns. Apex joins customer revenue to supplied costs and returns, so you can compare lifetime revenue and lifetime gross profit without building that model in SQL.
Experiment
PostHog's statistical experiments run on feature flags; Workflows' random branches and conversion reporting use a separate testing path. Apex runs separate experiments on web, app, and Adaptive Journeys across email, push, and in-app inbox, all tied to declared revenue outcomes.
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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!
To: me

Keep the evidence
PostHog saves shared metrics and experiment results, but it doesn't maintain Apex's connected, confidence-updating Belief Graph. Apex carries each claim, outcome, and supporting evidence into the workspace Belief Graph, so the next decision starts from what your organization proved.
Belief graph · live
Act
PostHog Workflows sends email, SMS, and beta push; its published native channels don't include a customer-facing in-app inbox. Apex puts the better path into native email, push, in-app inbox, or an Adaptive Journey without another delivery platform or data handoff.
Acquire
PostHog imports mobile attribution and partner records from specialist systems rather than operating those programs natively. Apex attributes paid mobile conversions, tracks partner contracts and payouts, and returns conversion feedback from the same connected customer and revenue record.
Connect ad platforms
Connect Meta, Google, LinkedIn, Microsoft, TikTok, and Reddit.


Try it in Apex!
Facebook & Instagram campaign spend and performance

Campaign spend, impressions, clicks, and conversions

Campaign spend, impressions, clicks, and conversions
Campaign spend, impressions, clicks, and conversions
Campaign performance plus conversions and audiences
Campaign performance plus outbound conversions

Compound
PostHog connects product tools around one event stream, but imported acquisition systems remain separate operational records. Apex connects acquisition, customer behavior, experiments, communications, revenue, profit, and evidence, so every outcome can improve the next growth decision.
The loop
Pricing
PostHog is usage-priced without seat fees, but advanced controls, extra projects, and some capabilities sit in paid packages or add-ons. Apex includes every capability without seat or feature gates and meters each kind of usage separately, so the full system is available from day one.
1.0M free every month, then $0.000050 per event. Web + server + organic mobile.
1.5K free every month, then $0.0500 per attribution. Paid-channel only. Organic activity counts as events.
1.0M free every month, then $0.000050 per orchestration. Assignments, journeys, branches, suppressions.
10K free every month, then $0.000600 per send. Email + push + in-app inbox.
50 free every month, then $0.0500 per generation. Subject lines, copy, recommendations.
100K free every month, then $0.000100 per conversion. Server-side conversions to Meta, Google, LinkedIn.
$2/active partner/mo (Stripe Connect at cost). Inactive partners are free.
Apex takes 1.5% + $0.50 per payout.
Questions
What Apex replaces, what it doesn't, and what moving actually takes.
If PostHog mainly serves product analytics, experiments, and lifecycle messaging, Apex can replace those decisions while adding acquisition operations and durable evidence. It doesn't replace replay, observability, or general feature flags.
Apex doesn't replace PostHog's session replay, error tracking, logs, surveys, general feature flags, or unsupported MIT-licensed self-host option.
Send the same events to both platforms while Apex builds the customer trail. Retain existing history, then move experiments, journeys, and acquisition decisions in stages.
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
PostHog addresses product analytics and developer tools. Apex connects the systems that acquire, engage, experiment, and learn, so your team can prove what grew revenue and put it to work.