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Free vs Premium
| Feature | Free | Premium |
|---|---|---|
| Articles & Glossary | ✓ | ✓ |
| Basic Tools | Limited | Full Access |
| Wavelength Explorer | Basic | Advanced |
| ROI Calculator | Basic | Export & Save |
| PDF Guides | ✗ | ✓ |
| Priority Support | ✗ | ✓ |
| Ad-Free Experience | ✗ | ✓ |
| Early Access | ✗ | ✓ |
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