WalkingPad X21 Review 🏃 Is It the Best Folding Treadmill for Home?

The WalkingPad X21 is a double-folding treadmill with 12 km/h (7.5 mph), a brushless 918-watt motor and high-quality build. Points of criticism: no incline, no remote control, a loud beep and very small transport wheels. Its successor, the X214, fixes some of them.

WalkingPad X21 Review

Introduction

Below I share my honest impressions and ratings to help you decide whether this walking pad is the right one for you.

This is a single review. You can find all my other walking pad and treadmill reviews in the walking pad category.

Design & build quality ★★★★★ (4,9/5)

The WalkingPad X21 impresses across the board with its modern, high-quality design. Despite its performance, it looks compact and blends unobtrusively into any living space. The excellent build quality and the use of first-class materials ensure durability and stability. The unit makes an extremely positive impression right from unboxing.

Category	Rating	Comment
Design	5.0/5	Modern, stylish and space-saving
Build quality	4.9/5	High-quality materials, excellent finish
Compactness	4.9/5	Only 22.5 cm deep when folded, very space-saving
First impression	4.9/5	High-quality with a pleasant smell when unboxing

Functionality ★★★★★ (4,7/5)

With a top speed of 12 km/h and a maximum user weight of 110 kg, the X21 offers versatile training options. Operation via the OLED display is intuitive, and app control extends the functionality. Small deductions for the loud beeping and the small transport wheels.

Category	Rating	Comment
Speed range	4.8/5	Up to 12 km/h, suitable for walking and running
Operation	4.7/5	Intuitive control via display and app
Extra functions	4.7/5	OLED display, tablet holder included
Transport wheels	4.4/5	Small wheels make moving on mats difficult
Acoustic feedback	4.0/5	Loud beep when adjusting, cannot be switched off

Ease of use ★★★★☆ (4,4/5)

Setup and assembly are simple and straightforward. Operation is either via the display or the app, which offers flexibility. The safety key increases safety, but could be dispensed with in walking mode. When used at the desk, control via the app is particularly practical.

Category	Rating	Comment
Setup	4.8/5	Quick and easy to fold and unfold
Operation	4.5/5	Easy via display or app
Safety features	4.3/5	Safety key required, even in walking mode
Accessibility of controls	4.2/5	Hard to reach when working at the desk
App functionality	4.5/5	Reliable app, good sync with health apps

Performance ★★★★★ (4,6/5)

The WalkingPad X21 offers excellent performance with a stable running feel and good cushioning. It stands securely and stably at any speed and is therefore suitable for effective training at home.

Category	Rating	Comment
Stability	4.7/5	Secure footing at all speeds
Cushioning	4.7/5	Very good shock absorption, easy on the joints
Running feel	4.8/5	Pleasant and comfortable
Max. user weight	4.6/5	Suitable for users up to 110 kg

Noise ★★★★☆ (4,2/5)

While the treadmill is pleasantly quiet at low speeds, the noise increases at higher speeds. The beep when adjusting the speed, which cannot be switched off, is a point of criticism. Using a rubber mat is recommended to reduce vibration.

Category	Rating	Comment
Noise level (low speed)	4.5/5	Quiet operation, ideal for flats
Noise level (high speed)	4.0/5	Louder, vibration noticeable
Acoustic feedback	4.0/5	Beep cannot be switched off, annoying
Sound insulation	4.3/5	A rubber mat reduces noise effectively

Value for money ★★★★★ (4,6/5)

Given the excellent build quality, versatile functions and strong performance, the WalkingPad X21 offers very good value for money. The small points of criticism are outweighed by the outstanding overall quality and functionality.

Category	Rating	Comment
Build quality	4.8/5	High-quality materials justify the price
Functionality	4.7/5	Extensive features for effective training
Compared to competitors	4.5/5	Better cushioning and stability than cheaper models
Long-term investment	4.6/5	Durable and reliable, worthwhile for daily use

Delivery and assembly

Dimensions and weight

	Unfolded	Folded
Length	142 cm	22.5 cm
Width	71.1 cm	71.1 cm
Height	100.7 cm	100.7 cm
Running surface	121 cm x 46 cm	–
Weight	37 kg	–
Top speed	12 km/h	–
Max. user weight	110 kg	–

The WalkingPad X21 is delivered fully assembled and is ready to use immediately. The generous running surface offers enough space for comfortable running workouts. When folded, the length shrinks to just 22.5 cm, which allows space-saving storage.

Delivery experience and condition of the packaging

Shipping was fast and hassle-free via TNT. The detailed tracking was extremely helpful. Special mention goes to the friendly delivery driver, who even helped me carry the 37 kg package up to the third floor. The package arrived in perfect condition and was carefully packed with protective material. The first impression of the treadmill was very positive: it looked high-quality and had no unpleasant smell.

Storage and accessories

Folding and unfolding

The double-folding design of the WalkingPad X21 makes handling easy:

1. Unfolding: pull the safety lever (located under the treadmill and easy to grip), fold out the second half of the deck and make sure the belt is centred to avoid friction, then connect the treadmill to the power only after it is fully set up.
2. Folding: fold up one side of the deck, use the safety lever (grip it in the middle to avoid finger injuries) and fold the deck up until it locks, then tilt it slightly and move it on the transport wheels.

Accessories included:

• Lubricating oil: For maintaining the treadmill.
• Power cable (1.95 m): Long enough for flexible placement.
• Tablet holder: For entertainment during training.
• Allen key: For readjusting the belt if needed.

Operation and safety

Display and controls

The WalkingPad X21 has a high-quality OLED display that shows the following information:

• Elapsed time
• Speed
• Distance
• Calories burned
• Number of steps

The speed can be adjusted on the main knob in 0.1 km/h steps. However, every adjustment produces a loud beep that currently cannot be disabled or turned down, a point that could be improved.

Safety features:

• Safety key: Must be inserted to start the treadmill. If removed, the treadmill stops immediately.
• Emergency stop: In the event of a fall, the treadmill stops instantly when the safety key is pulled.

App connectivity

The KS Fit app has improved significantly after a major update:

• Availability: For iOS and Android: KS Fit app for Android | KS Fit app for iOS
• Functions: controlling the treadmill (start, stop and speed adjustment), creating training plans with goals by distance, time or calories, data transfer to health apps such as Apple Health, and a child lock that locks the treadmill completely until it is unlocked via the app.

Note: A remote control is not included, but it is not needed either, as control is via the rotary knob or the app.

Summary

The WalkingPad X21 convinces with its combination of functionality, design and ease of use. It is the ideal treadmill for anyone who does not want to miss out on effective training at home despite limited space.

Highlights:

• Space-saving, double-folding design
• Reliable performance and easy operation
• Quiet operation, ideal for flats
• Can be integrated into your working day

Recommendation: For anyone who wants to increase their physical activity without spending extra time, the WalkingPad X21 is an excellent choice.

The WalkingPad X21 compared

Here you can compare the X21 with the two other walking pads up to 12 km/h in the same category that I have also tested.

	WalkingPad MC11	WalkingPad R2	WalkingPad X21
Max. load	110 kg	110 kg	110 kg
Weight	35.5 kg	36 kg	37 kg
Motor power	930 W	918 W	918 W
Speed range	1 – 12 km/h	Walking mode: 0.5 – 6 km/h | running mode: 0.5 – 12 km/h	0.5 – 12 km/h
Noise level	approx. 48 – 70 dB (with rubber mat)	approx. 48 – 75 dB (with rubber mat)	approx. 49 – 75 dB (with rubber mat)
Unfolded (L x W x H)	145.2 x 73.6 x 100 cm	145.2 x 72 x 103.2 cm	142.0 x 71.1 x 100.7 cm
Running surface (L x W)	120 x 44 cm	120 x 44 cm	121 x 46 cm
Foldable	✔️	✔️	✔️
Folded (L x W x H)	102.4 x 73.6 x 16.1 cm	100 x 72 x 16.2 cm	22.5 x 71.1 x 100.7 cm
Storage	Upright | lying flat	Upright	Upright
Control / connectivity	Touch controls on the display | Bluetooth via KS Fit app	Remote | Bluetooth via KS Fit app	Manual via rotary knob | Bluetooth via KS Fit app | NFC pairing
Display	OLED (time, speed, distance, calories, steps)	LED (time, speed, distance, calories, steps)	OLED (speed, time, distance, calories)
Warranty	1 year	1 year	1 year
Special features	Large transport wheels | phone holder | shock absorption and noise reduction | brushless motor	2-in-1 mode: walking and running | folding design for space-saving storage | non-slip upright storage | integrated aluminium alloy frame | shock absorption and noise reduction | brushless motor	Wide running surface | very well cushioned, suitable for upper floors

I have also made a comparison video in which I compare the WalkingPad X21 with the MC11 and the R2.

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WalkingPad discount

Use my links to the WalkingPad store above: the discount is activated automatically when you click through and is deducted in the cart.

Enjoy your new WalkingPad!

Frequently asked questions about the WalkingPad X21