Hotjar
Weights & Biases
| Feature | Hotjar | Weights & Biases |
|---|---|---|
| Pricing | Free / from $32/mo | Free / from $50/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.4 / 5 | 4.7 / 5 |
| Best For | ux-designers, product-managers, marketers, conversion-optimizers | ml-engineers, research-teams, ai-companies, data-scientists |
| Founded | 2014 | 2017 |
| Heatmaps | ✓ | ✗ |
| Session Recordings | ✓ | ✗ |
| Surveys | ✓ | ✗ |
| Feedback Widgets | ✓ | ✗ |
| Funnels | ✓ | ✗ |
| User Interviews | ✓ | ✗ |
| Dashboards | ✓ | ✗ |
| Experiment Tracking | ✗ | ✓ |
| Model Registry | ✗ | ✓ |
| Sweeps | ✗ | ✓ |
| Artifacts | ✗ | ✓ |
| Reports | ✗ | ✓ |
| Launch | ✗ | ✓ |
✓ Hotjar Pros
- Heatmaps show exactly where users click
- Session recordings reveal UX issues
- Easy to install (one script tag)
- Surveys and feedback widgets included
✗ Hotjar Cons
- Can slow down site if not configured well
- Session recordings take time to review
- Limited to web — no mobile app analytics
✓ Weights & Biases Pros
- Best-in-class experiment tracking
- Beautiful visualizations
- Great collaboration features
- Generous free tier
✗ Weights & Biases Cons
- Learning curve for full platform
- Can be expensive for large teams
- Requires integration work
The Verdict
Hotjar is built for ux designers and product managers, with a focus on heatmaps and session-recordings. Weights & Biases targets ml engineers and research teams and leads with experiment-tracking and model-registry.
On pricing, Hotjar is the clear winner for budget-conscious users — starting at $32/mo compared to $50/mo for Weights & Biases. That $18/mo difference adds up quickly for growing teams.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Hotjar offers broader built-in capabilities (7 features vs 6), while Weights & Biases takes a more focused approach — which can mean a simpler, faster onboarding experience.
Bottom line: Weights & Biases has a slight overall edge — but if heatmaps show exactly where users click matters most to you, Hotjar may still be the right call.