In a nutshell

The Groegg2 is a clever and stylish kids’ nightlight and room thermometer, but it’s quite expensive and only comes with a USB charger or mains adaptor plug – not both

What we tested

  • Ease of use
    A star rating of 5.0 out of 5.
  • Effectiveness
    A star rating of 5.0 out of 5.
  • Fun for kids
    A star rating of 3.0 out of 5.
  • Design
    A star rating of 4.0 out of 5.
  • Durability
    A star rating of 4.0 out of 5.
  • Worth the money
    A star rating of 2.0 out of 5.
Overall Rating
A star rating of 3.8 out of 5.


  • Dual benefit, sleek design, adjustable brightness


  • Limited charging options, price

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The Gro Company is known for its innovative children’s sleep aid products, most famously its Grobags (baby sleeping bags) and the Groclock (a digital clock designed to encourage children to stay in bed until the sun display appears). The Groegg2 is a larger, brighter version of the original Groegg – an ambient room thermometer and night light.

This 2-in-1 product is shaped like an egg, with a colour-changing dome made of kid-friendly soft silicone. This dome glows to different colours according to varying room temperatures – going from blue (15C or cooler) through yellow and orange to red (24C and warmer). The Gro Company recommends that you keep the Groegg2 on at all times to allow continuous temperature monitoring, but you can adjust the brightness to one of four levels using the button on the underside.

The Groegg2 doesn’t emit white noise and isn’t cuddly, so it’s different to other baby sleep aids like the Whisbear and MyHummy. It’s designed as a visual product rather than a tactile or auditory comforter.

First impressions?

The Groegg2 is a sleek and stylish product that would look good in a modern nursery room. The flexible silicone dome is a pleasant design choice and remains cool to the touch when the nightlight is on.


How is the Groegg2 different to the original Groegg?

This version of the Groegg is bigger and brighter than the original.

How does it work?

Depending on which version you choose, you plug the Groegg2 into either your mains power socket or USB charging port and you’re good to go. It’s simple to use and works straight out of the box. The digital display shows the ambient temperature to one decimal point - for example, 23.2 degrees Celsius – and the dome colour glows accordingly.


What sounds does the Groegg2 make?

It doesn’t make any sounds, it’s purely a visual and temperature-sensing device.

Does the product calm babies and young children?

The glow of the Groegg2 nightlight is gentle and can be adjusted to four levels of brightness so you can adapt it to what might calm your child best.


What do you think of the design?

The design of the Groegg2 is very appealing - it’s clean and minimal and would suit a range of children’s interior design schemes.

What age is it most suitable for?

The Groegg2 is most suitable for newborns and upwards - for as long as your child needs a nightlight, which could be years!

Does the Groegg2 work with an app?

It doesn’t work with an app, which keeps things simple and easy to understand. Everything you need is on the display.


Does it need batteries?

The Groegg2 doesn’t need batteries but you can choose a USB charging version if you know you’ll use it for travel. The mains adaptor version would be fine to take away, too, but note that it comes with a UK plug so you’d need an additional travel adaptor.

What’s in the box?

The Groegg2 itself, UK plug and instruction manual.


How much does the Groegg2 cost and is it worth it?

The RRP is £29.99, which is a tad pricey for a nightlight or room thermometer, so look out for discounts if you’re thinking of buying the Groegg2.

Does the Groegg2 need any accessories?

You can’t buy extras for the Groegg2 but the manual recommends which tog-rated Grobag to use for each room temperature. There are also instructions for families who prefer to use sheets and blankets, as well as recommendations for how much clothing to dress your baby in for each range of temperatures.


What would you have wanted to know before buying the Groegg2?

That you have to choose between charging via a mains adaptor plug or USB is the main thing to know, although if you buy on The Gro Company website this is made clear at the point of sale.

Are there any design elements you find particularly useful?

I appreciated the inclusion in the Groegg2’s instruction manual of recommendations for baby bedding and clothing for each corresponding room temperature.

Where can I buy the Groegg2?

It's available from Amazon, John Lewis and Mamas & Papas.

MadeForMums verdict

The Groegg2 is quite expensive for what it is, but you’ll get years of use from it and anything that helps babies and children sleep better -and for longer – is worth the money.



Product Specifications

BrandGro Company
Power supplyMains
  • Colour coded system that indicates room temperature
  • Ambient digital thermometer
  • Adjustable brightness - 4 levels
  • Soft touch silicone dome