Pros

  • Provides an exceptionally thorough clean that reaches places a manual brush simply can’t.
  • Strong yet gentle vibrations make it comfortable on gums while effectively removing plaque.
  • Lonasting battery life with quick charging keeps it ready for regular use.
  • Ergonomic, sleek design that’s both modern and easy to hold during brushing.
  • Four brush heads included, which are easy to replace and help customize your oral care.
  • Features multiple brushing modes, including sensitive and whitening, for a tailored experience.
  • Interactive app offers detailed feedback, tracks brushing habits, and motivates with rewards.
  • Magnetic charging mount and convenient travel case make charging ohe-go hassle-free.
  • Users report noticeable improvements in oral hygiene and fresher mouthfeel after use.

Cons

  • Battery life is inconsistent; some users found it significantly shorter than expected and worse than previous Ora models.
  • Display malfunctions reported, including it stopping working after about six weeks of use.
  • Replacement units (under warranty) sometimes differ in color, which may disappoint users wanting the original color.
  • Lacks Apple Watch compatibility, requiring users to rely on their phone to access brushing data.
  • Toothpaste buildup on the brush head if not cleaned properly after each use.
  • Despite durable build, battery drain can be quicker than anticipated during regular 2–3 minute sessions.

Bottom Line

The Oral-B iO Series 9 Electric Toothbrush is a top-tier choice for anyone serious about improving oral health with advanced tech, multiple modes, and a highly effective clean. However, potential buyers should be aware of some reported battery life issues and occasional display problems, which Oral-B does address via warranty replacements. If you’re looking for premium performance combined with smart features and don’t mind relying on your phone for app integration, this is a solid pick. For those prioritizing ultra-reliable battery life or wearable app compatibility, you might want to explore alternatives or wait for user feedback on newer batches.

Lowest at any Popular Retailer
$246.99 at Amazon
How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from 3 retailers to give you the short version.

Where to Buy

Prices last updated: April 20th 2026 2:20 pm
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