The best FullStory alternatives & competitors, compared
Contents
FullStory made its name as a digital experience intelligence platform, combining session replay with product analytics, heatmaps, and frustration signal detection to help teams understand user behavior.
But, like every tool, FullStory has limitations: it doesn't include feature flags, A/B testing, or error tracking for example. If you're an engineering-focused team, you may want more developer tools than FullStory provides.
Whether you've outgrown FullStory, need a broader platform, or just want to compare options, this guide covers the best FullStory alternatives available today.
1. PostHog
- Founded: 2020
- Similar to: FullStory, Amplitude, LogRocket
- Typical users: Engineers and product teams
- Typical customers: Mid-size B2Bs and startups

What is PostHog?
PostHog (that's us 👋) is a developer platform combining product analytics, session replay, user surveys, heatmaps, feature flags, error tracking, and more into one product. This means it's not only an alternative to FullStory, but also tools like LaunchDarkly, Hotjar, and Amplitude.
Typical PostHog users are engineers and product managers at startups and mid-size companies, particularly B2B companies. Customers include Supabase, ElevenLabs, Lovable, and more.
Key features
Product analytics: Funnels, user paths, retention analysis, custom trends, and dynamic user cohorts. Also supports SQL insights for power users.
Session replays: Including event timelines, console logs, network activity, and 90-day data retention.
Surveys: Target surveys by event or person properties. Templates for Net Promoter Score (NPS), product-market fit (PMF) surveys, and more.
A/B tests: Up to 9 test variations, primary and secondary metrics. Automatically calculate test duration, sample size, and statistical significance.
Feature flags: Safely launch features with local evaluation (for faster performance) and JSON payloads.
Error tracking: Monitor exceptions, stack traces, and crashes, all connected directly to session replays, user behavior, and feature flag changes.
How does PostHog compare to FullStory?
PostHog goes beyond the feature set of FullStory. It matches key features like single snippet installation, user segmentation, and privacy options, while also having surveys, A/B testing, error tracking, and feature flags. As a (big) bonus, it's also free, self-serve, and open source.
Getting started takes minutes with PostHog's setup wizard, which walks you through installation step by step.