iGarden K70 review: what 7,233 sq ft means

The Amazon listing for the iGarden K70 promises 7,233 sq.ft. on one charge and ties it to 7 hours of floor-only cleaning. That is ground covered over seven hours of passes. The pool it is meant for is much smaller: iGarden's FAQ recommends the K Series for pools up to 6 m × 12 m (19.7 ft × 39.4 ft), about 776 square feet of floor. Read the small number first.

If your pool fits inside that rectangle and runs 3.3 to 8.2 feet deep, the K70 is a sensible first cordless robotic pool cleaner: no charging base, a touchscreen on the robot and a long floor-only runtime. If the deep end goes past 8.2 feet, buy something rated deeper from our robotic pool cleaner picks. Behind that call sit iGarden's spec tables and FAQ, the live listing, four independent reviews of the iGarden K Series, and 12 owners counted among 256 YouTube commenters on 71 videos, once comment sections showing coordinated engagement were set aside (how we count). None of the 12 names the K70, and eight of the nine who name no model posted under videos of the earlier K60.

How to turn on the iGarden K70

Flip it over. Like the earlier iGarden pool cleaner in the K Series, the K70 keeps its power switch underneath: a round dial marked with padlocks, and turning it to the unlocked position wakes the touchscreen on top. Pick a mode, tap the power button once more so it glows steadily, then put it in the water. The Gadgeteer used that sequence on the earlier GT60, and AndroidGuys found the K60 drops to standby if it is not in the pool within three minutes.

The dial can fight back. Digital Reviews Network's tester could not move it by hand and pushed it round with a knife wrapped in a tea towel, after which it turned normally. A commenter under The Gadgeteer's review calls it "ridiculously hard" to turn.

What it cleans, and the steps it skips

Floor, walls and waterline, plus gentle slopes and shallow sun shelves, though iGarden's minimum usable depth of about 16 inches applies to a shelf as much as anywhere. The FAQ is unusually direct about the rest: no ladders, built-in benches or narrow steps, possible trouble on slopes steeper than 15 degrees, and nothing over 30 degrees in floor-only mode. It keeps no saved map, rescanning the pool with an IMU and infrared sensors each time it goes in.

Pool Magazine left one in a customer's freeform gunite pool for months, with Sacramento pool pro Kelli Clancy watching. It climbed to the tile line and reached the tanning ledge, which surprised her. Steps about 10 inches wide were another matter: it could climb some and struggled to stabilize on others.

What K Series owners report

Two of the 12 owners are plainly happy, and one of them, a K40 owner whose puppy ate the charging cord on the first day, got a free replacement from a person on the phone. One owner says theirs quit after six months and states no outcome. A K40 buyer planned to send theirs back without naming a fault. The most detailed complaint comes from a vinyl liner pool, model not stated, where the robot would not climb the walls, half the time turned back halfway up the slope from the deep end, and left the pool "maybe 60% clean" after three cycles. Another owner says it runs straight lines back and forth instead of the advertised S pattern.

Twelve owners is a small sample, and none of them names the K70. If your pool is vinyl with a long transition slope, take iGarden up on the FAQ's offer to look at pool photos before you buy, because it says climbing depends on surface grip.

Is your pool too deep for the K70?

Maybe. The ideal working depth is 3.3 to 8.2 ft (1 to 2.5 m), and the minimum usable depth is about 16 inches. A commenter on The Gadgeteer's review with a 10 foot pool returned a robot whose manual stopped at 8 feet, and the reviewer replied that the K Series manual says 8.2.

Past 8.2 feet, you are outside the depth iGarden tells owners to stay within.

Runtime: 7 hours is floor only

The K70 is rated for 7 hours floor only, 3.75 hours covering floor, walls and waterline, and 2.75 hours on Turbo with full coverage, on a 7.5Ah (192Wh) battery. iGarden says those figures come from a 3 by 8 m test pool and lists cold water, Turbo and a loaded filter among the things that shorten them. The K40 on the same spec table carries the same 7.5Ah pack and is rated for 4 hours floor only.

Plan around the full-coverage figure.

Charging takes about 5 hours at 2A on iGarden's table and 4.5 on the Amazon listing; plan on iGarden's 5. The K90 above it charges in about 3.5 hours at 3A.

Filtration: 180 microns, and the 50 micron layer

The 4L basket carries a 180μm mesh. iGarden's store lists a 50μm fine filter that stacks on top for silt and algae, and Pool Magazine's unit came with a fine-mesh layer. The Amazon listing advertises a 180μm + 50μm Dual Filter in its description while its filtration bullet names only the 180μm mesh, and iGarden's own comparison blog calls the K Series basket single-layer. Check the box. Run the fine layer in floor-only mode; iGarden warns it can cut suction and wall climbing.

iGarden K70 vs Beatbot Sora 10

For an igarden vs beatbot decision at this size, start with depth. Beatbot's FAQ gives the Sora 10 a working depth of 0.5m-3.5m, against the K70's ideal 1 to 2.5 m. Its spec table also claims shallow areas as low as 12 inches, against the K70's minimum of about 16, though that 12 inch figure sits awkwardly beside Beatbot's own half meter. It carries a 5L basket behind a 150 micron mesh.

Runtime is closer than the headline suggests: 7 hours against 5 on the floor, but about 4 hours for the Sora 10's floor, walls and waterline against 3.75 for the K70. The K70's three year warranty beats Beatbot's 2-year. A deep end past 8.2 feet, up to 3.5 m (11.5 ft in Beatbot's manual), goes to the Beatbot. A standard depth pool with long floor runs to do goes to the K70.

The app, and what it collects

The touch panel runs every mode, so you need the app mainly for firmware updates, which iGarden says can improve navigation and climbing. The iGarden Robotics app pairs over Bluetooth and 2.4GHz Wi-Fi and works only while the robot is on land. On the App Store, its developer, Fairland Holdings, declares that the app collects no data, a label Apple says it has not verified. The privacy policy that listing links to, from iGarden Robotics Group Ltd, says otherwise: your account name and contact details, mobile device information, the Wi-Fi network name and password when you pair a robot, and location, precise for some features, when you turn location services on. Treat it as a setup tool. Four App Store reviews of the app say it will not hold a connection, Clancy wanted better connectivity underwater, and one owner points out that the app only works with the robot out of the water.

Getting it out, and keeping it running

The robot parks at the edge when a run ends and ships with a hook. Its top is black end to end. On the earlier unit The Gadgeteer tested, that made the hook point hard to see, and one owner who has scratched the touchscreen with the hook suggests marking the spot with colored tape. Rinse the filter after each use. If debris jams the impeller on that earlier unit, its cover comes off with four Phillips screws, and the user manual shows how.

iGarden's warranty is three years of full machine replacement on the main unit and six months on consumable parts. Keep salt under 5,000 ppm, free chlorine at 4 ppm or less and pH between 7.0 and 7.8, and lift the robot out before adding strong chemicals.