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Choose by the App Routine and Charging Setup You Want

HX6321/02 is the documented choice for a brush that syncs to the Sonicare for Kids app and stores sessions; HX3601/01 documents Gentle/Extra Gentle settings and KidPacer/SmarTimer prompts, but handle pairing is unknown. The boxes also differ: HX6321/02 includes a standard head, while HX3601/01 includes a compact head and its manual describes USB charging, says a wall adapter is not included, and specifies a 5 V IPX4 USB Type A adapter; the manual also says included accessories may vary by model.

Published by Pickoryx · Published 2026-10-08

Source checked 2026-10-08 16:23 UTC

Products compared

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The buying question

Which model’s documented routine and app setup fits your household, and what head and charging setup comes in each exact package?

Philips documents handle-to-app Bluetooth syncing and stored brushing sessions for HX6321/02. HX3601/01 has Gentle and Extra Gentle settings, KidPacer and SmarTimer, plus access to the Kids app, but its handle-to-app pairing status is not established by the sources checked. The listed package information differs in included head size; HX3601/01 charging requirements also matter, but its manual says accessories vary by model.

Quick verdict

When the recommendation changes
  • If handle-to-app syncing is essential, verify HX3601/01 pairing directly with Philips before choosing it; the checked sources establish app access but not handle pairing.
  • If you need a particular replacement-head size, check the exact head you intend to buy against Philips’ model-specific support information; the listed size support is not a statement about fit across every Sonicare handle.

The differences that matter

Brushing Routine And App Setup

Philips Sonicare for Kids HX6321/02 Bluetooth Connected Toothbrush

Built-in Bluetooth and Sonicare for Kids coaching app; the handle stores up to 20 sessions; two modes.[2, 1]

Philips Sonicare for Kids HX3601/01 Design a Pet Edition Toothbrush

Two intensity settings, Gentle and Extra Gentle, plus SmarTimer/KidPacer and Kids app access; brush-handle pairing is unknown from checked sources.[4, 6]

What this changes: A offers documented handle syncing and session storage; B documents timer/pacer routine cues and app access but handle syncing remains unknown.[2, 4, 6]

The better fit depends on your priorities

Box Contents Charging And Replacement Head Fit

Philips Sonicare for Kids HX6321/02 Bluetooth Connected Toothbrush

One standard-size head, one charger and 10 stickers; compact head sold separately. Adapter/connector details unknown.[2, 3]

Philips Sonicare for Kids HX3601/01 Design a Pet Edition Toothbrush

The exact-model product page confirms one compact brush head is included and standard-size heads are sold separately. Its support-linked manual describes USB charging, says the wall adapter is not included, specifies a 5 V IPX4 USB Type A adapter, and notes included accessories may vary by model; exact included charger/accessory counts are unknown.[4, 6]

What this changes: The confirmed included head size and the manual’s charging requirements can affect setup. Exact HX3601/01 charger/accessory counts are not established; sources do not establish cross-model head interchangeability.[2, 3, 4, 6]

The better fit depends on your priorities

Best for your routine

A caregiver who specifically wants Philips-documented brush-to-app syncing and stored sessions

Best fit: Philips Sonicare for Kids HX6321/02 Bluetooth Connected Toothbrush

Based on listed features, not comparative testing.

The HX6321/02 sheet documents built-in Bluetooth, app coaching and up to 20 stored sessions. The checked HX3601/01 sources do not settle handle pairing, so this is a documented-feature fit, not proof that B cannot pair.

View Philips Sonicare for Kids HX6321/02 Bluetooth Connected Toothbrush on AmazonPaid link

A caregiver who prefers a compact head in the box and HX3601/01 timer/pacer cues

Best fit: Philips Sonicare for Kids HX3601/01 Design a Pet Edition Toothbrush

Based on listed features, not comparative testing.

Philips lists a compact head for HX3601/01 and documents Gentle/Extra Gentle settings, SmarTimer and KidPacer. This is a package and control preference, not an oral-health or cleaning result.

View Philips Sonicare for Kids HX3601/01 Design a Pet Edition Toothbrush on AmazonPaid link

Value and trade-offs

One or both observed offers have eligibility conditions, so no unrestricted price difference is shown.

Compare current like-for-like offers after confirming the exact package and any adapter needed; no price premium is assessed here.

Not assessed because current comparable offers and a suitable history window were not verified.

Limitations

  • The sources document different routines and package details, not comparative cleaning effectiveness, comfort or oral-health outcomes.
  • HX3601/01 app access is documented, but the checked sources do not establish handle-to-app syncing; HX6321/02 adapter and connector details are also unresolved.
  • Do not infer replacement-head interchangeability across these two exact handles from model-family head support. Current offers and price history were not verified.

Questions shoppers ask

Does the HX3601/01 brush sync with the Kids app?

Philips lists the Kids app for HX3601/01, and its manual explains app use even when the smart device lacks Bluetooth. The sources checked do not establish whether the handle itself pairs or syncs, so confirm that with Philips if handle syncing is essential.

What head and charger come with each model?

Philips lists one standard head and one charger with HX6321/02. For HX3601/01, Philips confirms one compact head is included and standard heads are sold separately. Its support-linked manual describes USB charging, excludes a wall adapter, specifies a 5 V IPX4 USB Type A adapter, and says included accessories may vary by model; exact charger/accessory counts are not established by the checked sources.

Methodology and sources

Compared each exact model’s documented app/routine controls, then checked its listed head, charger and model-specific head support. No app-pairing behavior beyond Philips statements, cleaning outcome, oral-health outcome or cross-model head compatibility was inferred. The HX3601/01 product page establishes its included compact head and separately sold standard heads; its support-linked manual is used for USB charging and adapter guidance only because it says accessories vary by model. Exact charger/accessory counts are left unknown.

AI-assisted research and drafting organized published Philips product information; no hands-on product testing was conducted.

View 6 sources
  1. 1.Philips Sonicare for Kids electric toothbrushesPhilips USA · Official specifications · Source checked 2026-10-08 15:07 UTC
    Evidence used on this page
    • “Compare Kids Toothbrushes” table: HX6321/02 and HX3601/01 rows; HX6321 Bluetooth/app, head/sticker and mode fields. Used for selection framing and corroboration only.: Philips USA presents both exact model numbers in its Kids toothbrush comparison section. Its table is a manufacturer choice signal, not comparative outcome evidence.
  2. 2.Philips Sonicare for Kids HX6321/02 product datasheetPhilips · Official specifications · Source checked 2026-10-08 15:07 UTC
    Evidence used on this page
    • Cover and feature/specification pages: exact HX6321/02; Bluetooth/coaching app, up to 20 stored sessions, two modes, rechargeable battery, up to 2 weeks, one charger, one standard head and 10 stickers.: Exact-model Philips sheet supports HX6321/02 app, session, mode and listed package facts; it does not establish the adapter or connector type.
  3. 3.Philips Sonicare for Kids HX6321/02 supportPhilips USA · Official support · Source checked 2026-10-08 15:07 UTC
    Evidence used on this page
    • Exact model HX6321/02 support page; replacement-head listings include Sonicare for Kids Compact and Standard heads.: Philips support page ties replacement-head listings to HX6321/02 and indicates compact head is an available separately purchased option; it does not establish cross-model interchangeability.
  4. 4.Philips Sonicare for Kids HX3601/01 Power Toothbrush, Design a Pet EditionPhilips USA · Official specifications · Source checked 2026-10-08 16:23 UTC
    Evidence used on this page
    • Exact model HX3601/01; page confirms one compact brush head is included and standard-size heads are sold separately, plus Kids app access. It does not establish exact charger/accessory counts.: Exact US product page supports HX3601/01 identity, app access and the included compact head; it does not specify exact included charger/accessory counts.
  5. 5.Philips Sonicare for Kids HX3601/01 supportPhilips USA · Official support · Source checked 2026-10-08 16:23 UTC
    Evidence used on this page
    • Exact model support page links the HX3601/01 user manual.: Support page ties the cited official manual to HX3601/01; support page is used for document applicability, with manual furnishing feature and charging details.
  6. 6.Philips Sonicare for Kids Design a Pet Edition 4 user manualPhilips · Official specifications · Source checked 2026-10-08 16:23 UTC
    Evidence used on this page
    • Support-linked Design a Pet Edition manual, English section: Kids app-use guidance and USB charging; wall adapter excluded, 5 V IPX4 USB Type A specified; manual says included accessories may vary by model. Do not use its generic accessory list to assert exact box counts.: The manual linked from HX3601/01 support applies to charging instructions and routine controls; it specifies the wall-adapter requirements but explicitly says included accessories may vary by model, so it does not establish exact included charger/accessory counts.