In many ways, I still consider the Apple Watch the smartwatch to buy for all things health-related, but I realize not everyone is all about buying into Apple's ecosystem. One solid competitor is the Fitbit Ionic, which similarly has continuous heartrate tracking, built-in GPS, swimproof construction (up to 50 meters), and even support for NFC payments via Fitbit Pay.

The Ionic's battery lasts at least four days on a charge, during which time you'll be able to track your daily calorie burn, real-time stats for specific forms of exercise, details about your workout routes (including elevation), and your sleep patterns, all of which you can monitor through the Fitbit app.

It's actually quite a bit more thorough when it comes to health tracking than I'll even get into here — since this isn't an in-depth review — but suffice it to say that the Ionic is just another example of why Fitbit is considered one of the top dogs in this space. I recommend reading iMore's review if you want a deeper inspection of what the Ionic can do.

The Fitbit Ionic comes in four colorways:

• Charcoal + Smoke Gray ($230)
• Blue-Gray + Silver ($233)
• Slate Blue + Burnt Orange ($239)
• Ink Blue + Ice Gray — Adidas Edition ($280)