Question: What iphone and droid fitness interval timer apps do you use to time your intervals? Gym boss? Cardio timer? Anything else? I posted this on my metabolic resistance training facebook ...

While there's no end to the HIIT classes offered at gyms, these apps can help you get in a quick workout from home, often with little to no equipment.

The Bit Timer iOS app uses three color-coded sliders to set workout exercise and rest times, as well as how many times the workout repeats.

We've picked the best free workout apps available on iOS and Android. If you're looking for great smartphone workouts at no cost, these apps will do the trick.

The app also includes a built-in timer for tracking rest or assisting with cardio and abs workouts. One key area that differentiates Flexify from other workout apps is its free plans section.

The first thing you'll notice when you open the Strength+ app is that you're given two options: to follow a pre-made workout, or generate your own. When you hit Generator along the bottom menu on ...

If your favorite form of fitness involves two wheels, Strava can help you train. Its GPS and timer track your workouts and report elevation gains, overall speed, and calories burned.

Here are some of the consistently best-reviewed and recommended at-home workout apps and YouTube channels. APPS Totally free, free trials, and premium offerings abound in the app store.

The app features 18 exercises to choose from and four different workout lengths (6, 12, 18, and 30 minutes). There's a built-in timer, exercise demonstrations, and statistics that can be tracked ...