Do the robots themselves differ in hardware capability, or just in software lock-out?

Mostly hardware. The iRobot Roomba j7+ has a vSLAM camera and a Clean Base that empties the bin. The iRobot Roomba Combo j9+ has a front camera with object recognition and a self-emptying dock, and its record states Smart Maps, zones, Keep Out Zones and scheduling carry no extra charge. The iRobot Roomba Combo Essential navigates by gyroscope with no camera or LiDAR, has a charge-only dock, and offers no keep-out zones or room selection.

Do iRobot saved maps depend on a paid subscription?

None of these robots' records describes saved maps being lost when a paid plan lapses. The iRobot Roomba Combo j9+ record states Smart Maps, room labels, zones, Keep Out Zones and scheduling are part of the iRobot Home app at no extra charge, with an optional paid add-on for extras. The iRobot Roomba Combo Essential keeps no editable map at all. Map retention on the iRobot Roomba j7+ is not verified on its record.

Can I use these vacuums effectively without any subscription?

The records describe these robots working without a subscription. The iRobot Roomba Combo j9+ record states mapping, room labels, zones, Keep Out Zones and scheduling carry no fee and its dock empties the bin; ongoing cost is dock bags at roughly $40 a year. The iRobot Roomba j7+ record mentions no subscription; it runs scheduled cleanings on a saved Smart Map and empties into its Clean Base. The iRobot Roomba Combo Essential runs scheduled cleanings with no map, zones or self-emptying.

Which of these Roomba features need a paid subscription, and which are free?

On these records, auto-empty is dock hardware rather than a subscription feature: the iRobot Roomba j7+ and Roomba Combo j9+ docks empty the bin, and the Roomba Combo Essential dock only charges. The j9+ record states mapping, zones and scheduling are free in the iRobot Home app, and that iRobot sells an optional paid add-on for extras. The j7+ record lists Alexa and Google Home voice control; any tie between voice and a subscription is not verified.

How do the Essential and j9+ differ given they both support mopping?

The iRobot Roomba Combo j9+ uses a front camera with object recognition, stores a Smart Map per level, and has a dock that empties the bin and refills the robot's water, at a $1,399 list price. The iRobot Roomba Combo Essential navigates by gyroscope with no map, keep-out zones or room selection, has a charge-only dock, and has its pad and reservoir handled by hand, at a $275 list price. The j9+ record states its mapping features carry no fee.

Comparisons · Robot Vacuums3 robots · checked 2 Oct 2026

Claims against testing

iRobot Roomba: what’s gated behind the subscription?

Many smart vacuums hold features back behind a monthly plan. This page checks whether three Roombas do, and where a missing feature comes from the hardware instead.

This page checks

Paid plan to run itAny monthly plan or in-app purchase found
Room and zone controlWhat the free app does on each model
Other running costsConsumables that are not a subscription

iRobot

Roomba j7+

IIIConditionalStrong

$800list

Where to buy

Amazon

Jan 2024Amazon acquisition of iRobot collapses, triggering going-concern disclosure

iRobot

Roomba Combo j9+

IIIConditionalStrong

$1,399list

Where to buy

Amazon

Out of stock on iRobot's US store; listed at select retailers

Jun 2024iRobot j-series firmware update expands obstacle recognition and carpet detection

iRobot

Roomba Combo Essential

IIAssistedCapable

$275list

Where to buy

Amazon

Out of stock on iRobot's US store; listed at select retailers

Sep 2026iRobot names the Roomba 105 Combo as successor to the Combo Essential

Full specifications16 figures on record · 14 differ

Figure

Roomba j7+

Roomba Combo j9+

Roomba Combo Essential

List price

Roomba j7+$800

Roomba Combo j9+$1,399

Roomba Combo Essential$275

Released

Roomba j7+Sep 2021

Roomba Combo j9+Sep 2023

Roomba Combo EssentialApr 2024

Dock

Roomba j7+Auto-empty

Roomba Combo j9+Auto-empty, auto water refill

Roomba Combo EssentialCharge-only dock, no self-emptying

Onboard bin

Roomba j7+250 mL

Roomba Combo j9+170 mL

Roomba Combo Essential600 mL

Water tank

Roomba j7+Not on record

Roomba Combo j9+170 mL

Roomba Combo Essential180 mL

Weight

Roomba j7+7.5 lb

Roomba Combo j9+8.9 lb

Roomba Combo Essential6.17 lb

Runtime

Roomba j7+75 min

Roomba Combo j9+120 min

Roomba Combo Essential120 min

Charge time

Roomba j7+120 min

Roomba Combo j9+180 min

Roomba Combo Essential240 min

Battery capacity

Roomba j7+31.8 Wh

Roomba Combo j9+82.5 Wh

Roomba Combo Essential65 Wh

Suction

Roomba j7+1,700 Pa

Roomba Combo j9+10,000 Pa

Roomba Combo Essential1,800 Pa

Noise

Roomba j7+68 dB

Roomba Combo j9+75 dB

Roomba Combo Essential68 dB

Navigation

Roomba j7+vSLAM camera (PrecisionVision AI) with optical floor-type sensing

Roomba Combo j9+PrecisionVision Navigation: front-facing camera with iRobot OS object recognition for pets, cords, socks, and shoes

Roomba Combo EssentialGyroscope-based with basic wall detection; no LiDAR or camera mapping

Connectivity

Roomba j7+Wi-Fi, Bluetooth, Alexa, Google Home

Roomba Combo j9+Wi-Fi, Bluetooth, Matter, Alexa, Google Home

Roomba Combo EssentialWi-Fi, Bluetooth, Alexa, Google Home

Size

Roomba j7+13.8 × 13.8 × 3.4 in

Roomba Combo j9+13.7 × 13.7 × 3.4 in

Roomba Combo Essential13 × 13 × 3.2 in

The same on all three

Threshold climb

Roomba j7+0.6 in

Roomba Combo j9+0.6 in

Roomba Combo Essential0.6 in

Battery type

Roomba j7+Li-ion

Roomba Combo j9+Li-ion

Roomba Combo EssentialLi-ion

Add a robot205 robot vacuums on record + Add a robot205 robot vacuums on record

Some links earn Robovations a commission. Nothing on this page is ranked by it.

The paywall check

What a Roomba owner pays for after the purchase

No paid plan was found for any of the three. The app listings show no in-app purchases, and the maker's pages describe mapping, keep-out zones and scheduling with no fee. The Essential's limits are in its hardware: its page lists Clean Map reports only.

iRobotRoomba j7+iRobotRoomba Combo j9+iRobotRoomba Combo Essential

Paid plan to run it

iRobot app page and app store listings

Roomba j7+: No plan foundProduct page mentions no plan. Both iRobot app listings show no in-app purchases.iRobot product page and app listings
Roomba Combo j9+: No plan foundProduct page mentions no plan or membership. Both iRobot app listings show no in-app purchases.iRobot product page and app listings
Roomba Combo Essential: No plan foundProduct page mentions no plan or membership. Both iRobot app listings show no in-app purchases.iRobot product page and app listings

Room and zone control in the app

As each maker page describes it

Roomba j7+: Room selection

Keep Out Zones

Clean Zones

Imprint Smart Mapping chooses which rooms are cleaned and scheduled.iRobot product page
Roomba Combo j9+: Room selection

Keep Out Zones

Clean Zones

Map labels rooms at up to 90% accuracy. Keep Out Zones set in the app.iRobot product page
Roomba Combo Essential: Room selection

Keep Out Zones

Clean Map report

Page lists Clean Map reports of where it cleaned. It lists no room or zone cleaning.iRobot product page

Other running costs

Consumables, which are not a subscription

Roomba j7+: BagsClean Base holds 60 days of dirt in a bag. Bags and filters are bought separately.iRobot product page
Roomba Combo j9+: Bags and solutionDock empties for up to 60 days and refills liquid for up to 30 days. Bags and cleaning solution are bought.iRobot product page
Roomba Combo Essential: PadReusable mop pad, washable up to 30 uses. Page lists a charging dock only.iRobot product page

Roomba j7+ iRobot product page and app listings · iRobot product pageRoomba Combo j9+ iRobot product page and app listings · iRobot product pageRoomba Combo Essential iRobot product page and app listings · iRobot product page

Same on all three: the iRobot Home app is free, and no in-app purchase appears on the listings. iRobot Select, a leased-Roomba plan, no longer takes new members.

A Roomba j7+ sits docked on its Clean Base in a hallway; the base's lid stands open with the full dirt bag pulled up by its card collar, and an opened carton of spare bags waits on the floor beside it.

Your home

How each one fits a home like yours

Set the conditions that describe your home. Each robot answers from its own Fit Check; nothing is scored until you choose.

Fit check

Describe your home

Pick what applies. Each robot answers from its own record.

Home size

Primary floors

Mopping needs

Across what you setEach robot’s own Fit Check

Roomba j7+Set a condition

Roomba Combo j9+Set a condition

Roomba Combo EssentialSet a condition

Home sizeNot set

Roomba j7+Not set

Roomba Combo j9+Not set

Roomba Combo EssentialNot set

Primary floorsNot set

Roomba j7+Not set

Roomba Combo j9+Not set

Roomba Combo EssentialNot set

Mopping needsNot set

Roomba j7+Not set

Roomba Combo j9+Not set

Roomba Combo EssentialNot set

Everything else

Where they land among 260 robot vacuums

Only the measures on which these three differ. The bar is the whole category; the block is the typical middle half; the tick is the median.

List priceThe maker's list

Roomba j7+

$800

Roomba Combo j9+

$1,399

Roomba Combo Essential

$275

$160typical $549–$1,199 · median $800$2,600

WeightThe robot alone

Roomba j7+

7.5 lb

Roomba Combo j9+

8.9 lb

Roomba Combo Essential

6.2 lb

3.6typical 7.5–10.4 · median 8.625

RuntimeMaker figure

Roomba j7+

75 min

Roomba Combo j9+

120 min

Roomba Combo Essential

120 min

60typical 120–210 · median 180360

Sources

Where every figure comes from

Roomba j7+ · iRobot US product page and iRobot app page, read 2 Oct 2026; Vacuum Wars review (updated Sep 2026)
Roomba Combo j9+ · iRobot US product page, read 2 Oct 2026; Vacuum Wars review (updated Sep 2026)
Roomba Combo Essential · iRobot US product page, read 2 Oct 2026; Pocket-lint review (Sep 2024); Reviewed review (May 2024)

Each robot's maker page and both iRobot app store listings were read on 2 Oct 2026 for any plan, membership or in-app purchase. Feature rows come from the maker page only.

Questions

What readers ask

Do I need a subscription to use a Roomba j7+?

No plan was found. iRobot’s app page and both app store listings show no paid tier or in-app purchase. iRobot Select, a leased-Roomba plan, no longer takes new members.

Why can't the Combo Essential clean one room?

Its product page lists Clean Map reports of where it cleaned, with no room or Keep Out Zone controls. No paid tier was found that adds them.

What does a j9+ cost to keep running?

The dock needs dirt disposal bags for emptying and cleaning solution for the water refill. iRobot’s page says the dock empties for up to 60 days and refills for up to 30 days.

Common questions

What readers ask about this comparison.

Next up

Which robot vacuums still clean when Wi-Fi is down?

Read the comparison

Comparison ID: RV–CMP–1901 · Last reviewed Jun 1, 2026 · Based on owner reports, manufacturer documentation, and firmware release notes

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