Built with the intention of making sure your young ones are as active as possible, the Fitbit Ace 2 improves on the previous model with a more eye-catching design, better screen and improved water resistance. To top it all off, it's slightly cheaper than the original, too.

Colorful design; Changeable straps; Swim-proof;

Feels a bit cheap; Somewhat expensive; App can be fiddly to set up

As I have seen other reviews, I purchased this for my 9-year-old grandson. The tracker works fine, but the band broke only after 2-3 months. The tracker was also falling out of the bottom portion of the band. I think that Fitbit needs to redesign a band that works for children.

The black piece pops out and is a horrible design for kids. We have owned it for a little over 4 months. My kid is 7 and can be fidgety at times. Honestly he pops it in and out sometimes. So I guess he stretched it out. So at swimming lessons the pebble came out on its own.

This FitBit is great for kids. The strap is very soft, comfortable on the wrist and easily adjustable. The daily challenges and goals are motivating and engaging. The fun clock faces are a nice feature for children.

Great product, tough for the kids. Can keep an eye on how they are going through the app.

The Fitbit Ace 2 doesn't break the mould for what a kids' fitness tracker can do, but unlike its predecessor it puts everything into a more child-proof package. This feels like a tracker built for kids, but also one that has strong core features and the ability to adapt when Ace 2 owners get bored...

Waterproof design; New goal celebrations; More distinctive look

Fitbit released the original Ace as a fitness tracker for kids last year in a bid to tap into the older child market, and with childhood obesity growing every year it is something that should be a growing market.

The Fitbit Ace 2 is a kid-friendly fitness tracker with fun animations to keep them hooked.

Colorful; kid-friendly; and replaceable bands; Animated watch faces; Swim-proof; Motivating goals; badges and trophies

Tracker is prone to falling out of the band; Annoying to switch between child and parent view in Fitbit app; Display prone to scratching

The Fit Ace 2 is an improvement over the original in every way. Its new design is vibrant and fun, not to mention more durable. The addition of a touch screen also makes for a smoother user experience.

Affordable; Vibrant, kid-friendly design; Interchangeable straps; Fairly accurate fitness tracking; Long battery life

No heart rate monitor