Amplitude vs FullStory: Complete Comparison 2026
An in-depth comparison of features, pricing, and user experience to help you make the right choice.
Amplitude
8.3(2,150 reviews)
Product analytics and experimentation platform for data-driven teams building digital products.
FullStory
8.2(1,180 reviews)
Digital experience analytics platform combining session replay, heatmaps, and error tracking for product teams.
Quick Comparison
| Aspect | Amplitude | FullStory |
|---|---|---|
| Best For | SaaS product teams tracking user behavior across web and mobile | Product teams at SaaS companies debugging complex user flows |
| Pricing Model | Freemium | Contact Sales |
| Starting Price | Free | Contact Sales |
| Deployment | cloud | cloud |
| Platforms | WEB | WEB |
| Rating | 8.3/10 | 8.2/10 |
Pros & Cons
Amplitude
Pros
- Free Starter plan with 100K events/month is the most generous in product analytics
- Behavioral cohort analysis is best-in-class for understanding user retention drivers
- Native experimentation engine eliminates need for separate A/B testing tools
- Publicly traded (NASDAQ: AMPL) providing long-term stability assurance
- Handles massive event volumes without performance degradation
- Strong data governance tools prevent analytics data from becoming messy
Cons
- Significant learning curve for non-technical team members
- Event taxonomy planning is essential; poor planning leads to messy data quickly
- Growth tier pricing is opaque and enterprise contracts often exceed $50K/year
- Free plan has limited data history and lacks advanced features like Experiment
- Initial SDK implementation requires meaningful engineering effort
FullStory
Pros
- Auto-capture means no manual event tagging required, saving engineering time
- Omnisearch lets you find specific sessions using CSS selectors or natural language
- Frustration signals automatically detect rage clicks, dead clicks, and thrashed cursors
- Error tracking ties JavaScript exceptions directly to session replays for faster debugging
- Retroactive analysis lets you query past data without pre-defining events
Cons
- No published pricing and no free tier makes it inaccessible for small teams
- Plans typically start at $300+/mo which is steep for low-traffic sites
- Learning curve is significant for teams new to digital experience analytics
- Data storage costs scale with traffic volume and can spike unexpectedly
- Mobile app analytics support is less mature than web analytics
Pricing Comparison
| Product | Pricing Model | Starting Price |
|---|---|---|
| Amplitude | freemium | Free0 |
| FullStory | contact sales | Contact Sales |
Our Verdict
Choose Amplitude if...
SaaS product teams tracking user behavior across web and mobile
Choose FullStory if...
Product teams at SaaS companies debugging complex user flows
Still Not Sure?
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