Oral-B iO Series 9 vs Philips Sonicare DiamondClean Smart 9700
Side-by-side comparison based on 1023 verified buyer reviews
15,000 monthly searches for this comparison
SmartScore Comparison
Oral-B iO Series 9
Great
534 reviews
Philips Sonicare DiamondClean Smart 9700
Great
489 reviews
AI Verdict
Based on verified buyer reviews
The Oral-B iO Series 9 and Philips Sonicare DiamondClean Smart 9700 are extremely close in overall quality. Your choice should come down to which features matter most to you and your specific use case.
Price Comparison
Oral-B iO Series 9
$249 – $349
Verified purchase rate: 82%
Philips Sonicare DiamondClean Smart 9700
$219 – $329
Verified purchase rate: 80%
Specs Comparison
What People Say
Oral-B iO Series 9
What People Love
- ✓AI tracking ensures you brush every surface — dentist noticed improvement
- ✓Magnetic drive is whisper-quiet compared to old Oral-Bs
- ✓Premium feel and build quality
- ✓Interactive display is surprisingly useful
What People Hate
- ✗Replacement brush heads are very expensive ($8-10 each)
- ✗Proprietary charging case — only charges with included case
- ✗App can be pushy with notifications and gamification
Philips Sonicare DiamondClean Smart 9700
What People Love
- ✓Sonic vibration is incredibly gentle on sensitive gums
- ✓Glass charging tumbler is elegant and practical
- ✓Multiple brush head options for different needs
- ✓Noticeably whiter teeth within weeks
What People Hate
- ✗Smart sensors are less accurate than Oral-B's AI tracking
- ✗Brush heads are expensive (though slightly less than Oral-B iO)
- ✗App coaching is basic compared to competitors
Who Should Buy What?
Oral-B iO Series 9
Best For
- →People with poor brushing habits who need coaching
- →Tech enthusiasts who enjoy smart features
- →Those willing to invest in dental health
Not For
- ⚠Budget-conscious buyers (high ongoing costs)
- ⚠People who want simple toothbrush functionality
- ⚠Those who don't want app connectivity
Philips Sonicare DiamondClean Smart 9700
Best For
- →People with sensitive teeth and gums
- →Those who want a gentle yet effective clean
- →Users who value elegant design in their bathroom
Not For
- ⚠People wanting detailed brushing analytics
- ⚠Those who prefer oscillating brush motion
- ⚠Budget-conscious buyers
About This Analysis
This Oral-B iO Series 9 vs Philips Sonicare DiamondClean Smart 9700 review is generated by ReviewIQ's AI analysis engine, which aggregates and synthesizes data from verified buyer reviews, expert assessments, and public product specifications. Our methodology cross-references multiple review sources to identify recurring patterns, strengths, and issues — providing an unbiased, data-driven summary rather than a single opinion.