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oral-biO Series 9ILLUSTRATIVE

Illustrative placeholder — we don’t have licensed photography for this product yet.

Research summary

Why it scores 7.5.

Best cleaning, loudest app. Across 3 cited sources and 6.150 owner reviews, the Oral-B iO Series 9 rates strongest on performance and build quality, and weakest on repairability.

Where it falls short

  • Heads cost ~€55/year
  • Display is a gimmick for most
  • Sealed battery

Specifications

Modes7 modes
Battery12 days
Pressure sensorYes, three-colour
Head cost / year≈ €55
Travel caseCharging case included
ModeliO Series 9, iOM9
Released2020-09-01

Sources

The published research behind these scores. We link out to it so you can check it; we earn nothing from these links.

  • Oral-B iO Series 9 ReviewTechGearLab · informs performance, build quality
  • Oral-B iO Series 9 reviewTechRadar · informs performance, price fairness
  • Oral-B iO Series 9 ReviewTrusted Reviews · informs performance
Oral-B · Toothbrushes

Oral-B iO Series 9

Model iO Series 9, iOM9

Best for

  • Measurable plaque removal
  • Coaching yourself into better technique
  • Gum health tracking

Avoid if

  • You find app nagging exhausting
  • You dislike oscillating brush heads
Best delivered price199,00 €

Price plus delivery at Amazon DE — delivery is free.

Worth Score
7.5/10
DecentMedium confidence

Backed by a few sources. Treat small score gaps as noise. Weighted from 6 factors across 3 cited sources and 6.150 owner reviews (4.5/5). Expand any factor below to see what it is based on.

Price fairness
20% of score
6.4
1 source for price fairness
  • Oral-B iO Series 9 reviewTechRadar
Build quality
20% of score
8.4
1 source for build quality
  • Oral-B iO Series 9 ReviewTechGearLab
Performance
20% of score
9.6
3 sources for performance
  • Oral-B iO Series 9 ReviewTechGearLab
  • Oral-B iO Series 9 reviewTechRadar
  • Oral-B iO Series 9 ReviewTrusted Reviews
Longevity
20% of score
7.8

No published source yet — this rating is our own judgement.

Repairability
10% of score
2.8

No published source yet — this rating is our own judgement.

Support & warranty
10% of score
8.0

No published source yet — this rating is our own judgement.

Last updated 14 July 2026 · How we score products →

Price history

Not enough yet to tell you anything.

3 observations, recorded 28 July 2026. We have 3 observations over 0 days. We need at least 5, spanning at least 14 days, before a range tells you anything. Nothing here is a trend yet.

We have no price feed, so this fills up only when someone re-checks the listings by hand. We would rather show you an empty clock that started than a chart drawn from two points.
Something wrong here?
What we have, what it should be, and how you know.
A link to a measurement, teardown or review. We will not change a score without one — see /methodology.
Only so we can tell you what we did. Nothing else.

Published corrections appear on /revisions with the reason. We may not write back.

Keep rate
No outcome data yet

We ask everyone who buys through us, 6 and 12 months later, whether they still use it. We’ll publish the answer here — including when it’s bad.

No one has told us how this worked out yet. No score on this page is affected by it yet.

Purchases are recorded in this browser, and on the server only until it restarts. There is no mailer yet, so no follow-up will actually arrive. We publish a rate at 30 answers and not before — a percentage from three people is a made-up number.
Price alert

Today it is 199,00 € delivered. Tell us the price you would actually pay.

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philips9900 PrestigeILLUSTRATIVE
7.5 Worth ScoreMedium

Philips Sonicare 9900 Prestige

4.4 (3.890)
Philips229 €
7% above typical for toothbrushes
Why it scores 7.5
Prototype data — prices and retailer stock are a fixed demo snapshot from 28 July 2026, not a live feed.
© 2026 BrivioHow we score products · What we got wrong · hello@brivio.app · Retailers never influence our score.
DiscoverComparePlanSavedHow we score