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Home / Electric Toothbrushes / Oral-B iO Series 9 vs Oral-B iO Series 5

Oral-B iO Series 9 vs Oral-B iO Series 5

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 8.6)

Oral-B iO Series 9

Oral-B iO Series 9

Oral-B

$199.00 – $279.00

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
Check Price on Amazon
Oral-B iO Series 5

Oral-B iO Series 5

Oral-B

$99.00 – $139.00

8.6
Excellent
Best Value iO

Pros

  • +AI position detection without the Series 9 price tag
  • +Pressure sensor prevents gum damage
  • +Universally compatible with all iO replacement heads

Cons

  • −No wireless charging travel case
  • −5 modes vs 7 on the Series 9

Don't buy if

  • ⚠ The iO app requires Bluetooth — without it you lose the AI coaching benefit
Check Price on Amazon

Score Comparison

MetricOral-B iO Series 9Oral-B iO Series 5
Trust Score9.0 ✓8.6
Expert Score9.2 ✓8.5
User Sentiment8.88.8
Value Score8.09.0 ✓
Complaint Risk8.5 ✓8.8
Price$199.00 – $279.00$99.00 – $139.00

The Verdict

Oral-B iO Series 9 wins this comparison with a Trust Score of 9.0 vs 8.6. It's rated "Best Overall" and scores higher across the majority of our evaluation criteria. However, the Oral-B iO Series 5 may be a better fit depending on your specific priorities — check the pros and cons above.

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