Oral-B iO Series 9 vs Philips Sonicare DiamondClean Smart 9500
Head-to-head comparison based on trust scores, features, pricing, and real user feedback.
Our pick: Oral-B iO Series 9 (Trust Score 9.0 vs 8.8)
9.0
Excellent
Best Overall
Pros
- +AI-guided coaching maps your brushing coverage in real time
- +Pressure sensor ring turns red before gum damage occurs
- +7 cleaning modes including whitening and sensitive
Cons
- −Premium price with replacement heads adding up annually
- −iO app requires Bluetooth connection to unlock AI features
Don't buy if
- ⚠ Replacement brush heads cost $10-15 each — factor this into long-term cost
8.8
Excellent
Best Sonic Technology
Pros
- +Brush head recognition auto-adjusts intensity automatically
- +62,000 sonic movements per minute for deep cleaning
- +Premium glass travel case charges via USB-C
Cons
- −Sonicare app is less intuitive than Oral-B's
- −Higher-priced replacement heads
Don't buy if
- ⚠ Aggressive sonic action can worsen receding gums — use Sensitive mode if you have gum recession