Question 1

Which is better, Philips SmartSleep HF3520 or Casper Glow Light?

Accepted Answer

Based on our testing, the Casper Glow Light scores higher overall at 9.3/10. The Philips SmartSleep HF3520 scored 8.5/10 and the Casper Glow Light scored 9.3/10 in our Best Sunrise Alarm Clocks 2026 evaluation.

Question 2

Is the Philips SmartSleep HF3520 worth it over the Casper Glow Light?

Accepted Answer

The Philips SmartSleep HF3520 scores 8.5/10 while the Casper Glow Light scores 9.3/10. The Philips SmartSleep HF3520 is our "Best Overall" pick in the Best Sunrise Alarm Clocks 2026 category.

Philips SmartSleep HF3520 vs Casper Glow Light: Which to Buy?