FullStory
FullStory is a behavioral data platform that helps you find and fix friction points in your digital experience by capturing every user interaction on your website or mobile app.
PostHog
PostHog is an all-in-one open-source product OS that provides you with essential tools like web analytics, session replays, feature flags, and A/B testing to build better products.
Quick Comparison
| Feature | FullStory | PostHog |
|---|---|---|
| Website | fullstory.com | posthog.com |
| Pricing Model | Freemium | Freemium |
| Starting Price | Free | Free |
| FREE Trial | ✓ 14 days free trial | ✘ No free trial |
| Free Plan | ✓ Has free plan | ✓ Has free plan |
| Product Demo | ✓ Request demo here | ✓ Request demo here |
| Deployment | ||
| Integrations | ||
| Target Users | ||
| Target Industries | ||
| Customer Count | 0 | 0 |
| Founded Year | 2014 | 2020 |
| Headquarters | Atlanta, USA | San Francisco, USA |
Overview
FullStory
FullStory helps you understand exactly how users interact with your digital products so you can eliminate friction and boost conversions. Instead of guessing why users drop off, you can watch high-fidelity session replays and analyze heatmaps to see their real-world experience. It automatically captures every click, swipe, and scroll without requiring manual event tagging, giving you a complete picture of the customer journey from start to finish.
You can use the platform to identify technical bugs, surface UX flaws, and quantify the financial impact of specific site issues. It serves product managers, engineers, and digital marketers at mid-market and enterprise companies who need to make data-driven decisions. By connecting qualitative insights with quantitative data, you can prioritize your roadmap based on what actually matters to your customers.
PostHog
PostHog gives you a complete suite of product tools in a single platform, so you don't have to stitch together multiple different services. You can track how users move through your application, identify where they get stuck using session recordings, and test new ideas with built-in A/B testing. It helps you understand the entire user journey from the first click to long-term retention.
Because it is open-source and offers a self-hosting option, you maintain full control over your data privacy and compliance. Whether you are a solo founder or part of a large engineering team, you can deploy features faster and make data-driven decisions without waiting for a data analyst to run manual queries for you.
Overview
FullStory Features
- Session Replay Watch high-fidelity reconstructions of real user sessions to see exactly where people get stuck or frustrated on your site.
- Heatmaps and Clickmaps Visualize aggregate user behavior to identify which elements grab attention and which parts of your page are being ignored.
- Frustration Signals Automatically detect 'rage clicks' and 'dead clicks' so you can quickly find and fix the most painful parts of your UI.
- Funnel Analysis Build conversion funnels in seconds to see where users drop off and instantly watch replays of those specific moments.
- Privacy by Design Protect your users' sensitive data with robust, private-by-default masking tools that ensure personal information never leaves their browser.
- Mobile App Monitoring Capture native mobile interactions on iOS and Android to ensure your app experience is as smooth as your desktop site.
PostHog Features
- Product Analytics. Track your conversion funnels and retention charts to see exactly where users drop off in your product journey.
- Session Replays. Watch real videos of how people use your app to find bugs and identify confusing UI elements instantly.
- Feature Flags. Roll out new features to specific user groups safely and toggle them off immediately if something goes wrong.
- A/B Testing. Run experiments on your features or UI changes to see which versions actually drive more conversions and engagement.
- Surveys. Collect feedback directly from your users while they are active in your app to understand the 'why' behind their actions.
- Data Warehouse. Link your production data with your product analytics to get a unified view of your entire business operations.
Pricing Comparison
FullStory Pricing
- 1,000 sessions per month
- 1 month of data retention
- Session Replay
- Heatmaps
- Basic frustration signals
- Everything in Free, plus:
- Custom session volume
- Extended data retention
- Advanced funnel analytics
- Segment filtering
- Full suite of integrations
PostHog Pricing
- 1M events per month
- 5,000 session recordings
- Unlimited feature flags
- 3 active surveys
- Community support
- Standard data retention
- Everything in Free, plus:
- Pay only for usage over limits
- Group analytics
- Advanced permissions
- Priority support
- Longer data retention
Pros & Cons
FullStory
Pros
- Incredible detail in session replays compared to competitors
- Automatic data capture requires no manual event tagging
- Powerful search filters make finding specific sessions easy
- Excellent privacy controls for masking sensitive user data
Cons
- Pricing can be high for high-traffic websites
- Steep learning curve for advanced analytical features
- Data retention limits can be restrictive on lower plans
PostHog
Pros
- Extremely generous free tier for early-stage startups
- Consolidates multiple tools into one single platform
- Open-source nature allows for deep customization
- Easy to set up with one-click autocapture
Cons
- Interface can feel overwhelming for non-technical users
- Self-hosting requires significant engineering resources
- Documentation is dense and sometimes hard to navigate