Amplitude
SpyFu
| Feature | Amplitude | SpyFu |
|---|---|---|
| Pricing | Free / from $49/mo | From $39/mo |
| Free Plan | ✓ Yes | ✗ No |
| Rating | 4.4 / 5 | 4.2 / 5 |
| Best For | product-teams, growth-teams, data-analysts, saas-companies | ppc-managers, seo-professionals, agencies, competitive-analysts |
| Founded | 2012 | 2006 |
| Event Analytics | ✓ | ✗ |
| Cohort Analysis | ✓ | ✗ |
| Funnels | ✓ | ✗ |
| Retention | ✓ | ✗ |
| Experimentation | ✓ | ✗ |
| Session Replay | ✓ | ✗ |
| Cdp | ✓ | ✗ |
| Competitor Keywords | ✗ | ✓ |
| Ppc Research | ✗ | ✓ |
| Backlink Analysis | ✗ | ✓ |
| Rank Tracking | ✗ | ✓ |
| Keyword Research | ✗ | ✓ |
| Domain Comparison | ✗ | ✓ |
✓ Amplitude Pros
- Powerful behavioral cohort analysis
- Free tier generous (50K monthly tracked users)
- Built-in experimentation (A/B testing)
- Excellent for product-led growth metrics
✗ Amplitude Cons
- Complex event taxonomy required upfront
- Expensive at scale beyond free tier
- Steep learning curve for non-analysts
✓ SpyFu Pros
- Unlimited search results on all plans
- Excellent competitor analysis
- Historical data going back years
- Good PPC research tools
✗ SpyFu Cons
- Interface can be overwhelming
- Data accuracy varies for smaller sites
- Limited international data
The Verdict
Amplitude is built for product teams and growth teams, with a focus on event-analytics and cohort-analysis. SpyFu targets ppc managers and seo professionals and leads with competitor-keywords and ppc-research.
On pricing, SpyFu is the clear winner for budget-conscious users — starting at $39/mo compared to $49/mo for Amplitude. That $10/mo difference adds up quickly for growing teams.
Amplitude has a free plan, which gives it a meaningful edge for individuals and small teams exploring their options. SpyFu requires a paid subscription from day one.
Feature-wise, Amplitude offers broader built-in capabilities (7 features vs 6), while SpyFu takes a more focused approach — which can mean a simpler, faster onboarding experience.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.