Best fitness apps for iPhones, Android mobile phones: Apps for the eyes, the body, and hydration

An attendee checks out a new iPhone X during an Apple launch event in Cupertino, California, U.S. September 12, 2017.Reuters/Stephen Lam

Smartphones are now part of the modern lives of nearly everyone on the planet, particularly those who live in urban areas. This, however, poses a health risk for everyone too fixated on their devices.

Studies show that the health concerns and risks associated with smartphones not only affect physical health but also mental health. One immediate physical health detriment is eye damage caused by blue light, eventually destroying vision capacity in the long run. In addition, the usual inactivity brought about by spending too much time on the phone can cause weight gain.

Worried users need not fear as the solution is also in the palm of their hands: smartphones. Whether they are Androids or iPhones, smartphones have specific apps which can help improve the health and fitness of their owners.

First, users can download the "Blue Light Filter" app. This will change the color tone and hue of the smartphone so as to filter out the blue spectrum of light that the screen is emitting, although this can make the screen colors look a bit brownish or sepia. It can also be programmed to be unobtrusive and to only activate at a certain time of the day or night since blue light can also disrupt the sleeping cycle of an individual.

For those looking for more bodily activity while using their smartphones, the "30 Day Fitness Challenge" app will allow users to follow a disciplinary set of exercises which they can follow in order to stay in shape. The best part is that the app does not require the users to be in the gym, as the workout and exercise instructions are included and are easy to follow.

Finally, one of the many important things people forget to do while using smartphones is hydrating. It is important to drink water often and not only when thirsty to ensure good health, which is why the "Water Drink Reminder" app has been developed. With an alarm, this app will remind users to keep up with the ideal standards of hydration based on the user's body weight.

These apps are all available for free on any smartphone, but users are advised to check the system requirements of the apps before installing.