Oral-B iO Series 4 vs iO Series 5 (2026)
Choose Your iO
We may earn a commission on qualifying purchases at no extra cost to you.
The Oral-B iO Series 4 (~$100) and iO Series 5 (~$120) are separated by approximately $20 and a narrow set of features. Both use the same magnetic drive motor, the same iO round brush head, the same pressure sensor, and the same two-week battery life. The iO5 adds Bluetooth connectivity to the Oral-B app, Position Detection coverage mapping, and one additional cleaning mode (Intense Clean). Whether that package is worth $20 depends entirely on how you plan to brush.
iO Series 4 vs iO Series 5: What You Get for $20 More
| Feature | iO Series 4 | iO Series 5 |
|---|---|---|
| Price | ~$100 | ~$120 |
| Modes | 4 (Daily, Sensitive, Super Sensitive, Whitening) | 5 (adds Intense Clean) |
| Bluetooth / App | No | Yes |
| Position Detection | No | Yes |
| Motor | Magnetic drive (same) | Magnetic drive (same) |
| Pressure sensor | Yes | Yes |
| Travel case | Hard case included | Hard case + whitening head often bundled |
Who the Oral-B App Is Actually For
The Oral-B app's most useful feature is Position Detection. When enabled, the app shows a real-time map of your mouth divided into six zones (upper/lower, left/right, front/back) and fills each zone in as you brush. A red warning appears if you brush too hard. At the end of the session, you get a score based on coverage, time, and pressure. The app also tracks brushing streaks and can remind you to brush at set times.
This is valuable for people who are actively trying to improve their brushing habits — people who tend to rush, skip zones, or want objective confirmation that they are brushing correctly. It is less valuable for people who have been brushing the same way for 30 years and simply want an excellent brush without a phone dependency. If you know you are a good brusher, the app adds nothing to the clean itself.
Intense Clean Mode: Is It Worth Having?
Intense Clean is the iO5's fifth mode, running the motor at its maximum oscillation pattern for the most aggressive plaque removal cycle. It is not suitable for daily use — the intensity can be too much for sensitive gums long-term — but it is useful for the occasional deep clean after eating sugary foods, before a dental appointment, or when your mouth feels particularly unclean. The iO4's four modes (Daily Clean, Sensitive, Super Sensitive, Whitening) cover most daily needs. Intense Clean is a nice extra for people who will actually use it.
Comparing Across the iO Lineup
We may earn a commission on qualifying purchases at no extra cost to you.
The Real Decision: App or No App
The iO4 and iO5 brush identically. The motor, head, and brushing mechanics are the same. The iO5's advantage lives entirely in the Oral-B app — Position Detection, coverage scoring, habit tracking, and Intense Clean mode. If you will open that app once a week or more, the iO5's $20 premium is money well spent. If you plan to brush without a phone in hand, set-it-and-forget-it, the iO4 is the better value: you get all the physical brushing quality of the iO Series for less.
Related Resources
Frequently Asked Questions
What is the difference between the Oral-B iO Series 4 and iO Series 5?
The iO5 adds three features vs the iO4: Bluetooth app connectivity, Position Detection, and a fifth cleaning mode (Intense Clean). Both have the same magnetic drive motor, the same pressure sensor, the same 2-week battery, and the same iO round head. The iO5 costs approximately $20 more.
What does Position Detection do on the Oral-B iO Series 5?
Position Detection uses the brush's sensors to detect which area of your mouth you are brushing and maps it in the Oral-B app in real time. The app shows a color-coded mouth map that fills in as you cover each zone, alerting you to areas you are missing. It does not change how the brush works; it only provides feedback in the app about where you have and have not brushed.
Should I buy the Oral-B iO Series 4 or iO Series 5?
Choose the iO4 if you will never open the Oral-B app or do not want app dependency in your brushing routine. Choose the iO5 if you want Position Detection's coverage map, the Intense Clean mode, or the motivation that comes from app streak tracking and habit scores. Both deliver identical brushing performance — the decision is entirely about whether you will use the app features.