GoSwimFree 1 of 11
Fine-tuning your freestyle stroke can help you become more efficient and use less energy in the water. Instead of having to pay for a swim coach, this app provides tons of videos and hi-res images of swim drills to perfect your technique. There's also swim courses to learn more about developing certain skills in the pool and new features that allow coaches and swimmers to share videos with each other for feedback. All in all, you'll get thousands of swim videos from its library all with the common goal of making you better in the water.
MyFitnessPalFree 2 of 11
Whether you're trying to lose weight or want a nutritional breakdown of your daily food consumption, the MyFitnessPal app is a must for triathletes wanting to take their nutrition to the next level. The database included in the app has thousands of meals to choose from, but you can also input specific ingredients from recipes or scan packaging barcodes to upload what you eat.
StravaFree 3 of 11
Strava segments are a lot of fun and a great way to compete against others out on the road. Extra motivation aside, Strava is a must when cycling or running for its ability to receive data from power meters, HRMs, head units, wearables or GPS devices, keeping track of just about any performance metric you can think of all in one place. Add in social networking and the ability for loved ones to track your workout live when you're away from home, and you've got an endurance app you shouldn't be without.
Wahoo FitnessFree 4 of 11
If you don't want to spend a bunch of extra money on a GPS running watch or a cycling computer, the Wahoo Fitness app can provide you with much of the same information without the extra cost. Heart rate, cycling cadence, stride data, speed, distance, power data, calorie counter and elevation gain are just of a few metrics included when paired with ANT+ sensors. Audio announcements are also an option to give you live feedback and help you stay on track during workouts. It can even be used with the Wahoo Kickr indoor cycling trainer to adjust resistance levels and control the simulation modes.
Swim Radar$3.99 5 of 11
Busy schedules and traveling for work can make it tough to get a quick swim workout in when you're away from home. To solve the problem, the Swim Radar app will provide you with info on the nearest pools in your area—no matter where you are in the world. You can even use its sorting feature to find 25-yard, 50-meter or the best open water swim locations to suit your individual needs. When used in conjunction with Google Maps, the app will even provide you with step-by-step driving directions to make squeezing a swim in as easy as possible.
Elite HRVFree 6 of 11
Understanding the stress of your training load and when you're properly recovered for your next workout is a crucial element to any training plan. To help you out with the basics of heart rate variability, the Elite HRV app uses heart rate data to provide live biofeedback to determine how your body is responding to training. Over a period of time, the app will help you determine if you're overtraining, right on track or not progressing as you should, which will help you alter your workouts as needed.
Bike Doctor$4.99 7 of 11
Squeaky brakes or a derailleur that just won't seem to shift right are common headaches that home mechanics suffer through. To help you get back on the road as stress-free as possible, the Bike Doctor app provides detailed written instructions, videos and pictures that make it easy for even the most novice mechanics to understand complicated repairs. There's also useful instructions for common repairs you may need to make roadside, as well as preventative information such as common maintenance errors and how to prevent punctures.
Tri Trainer$5.99 8 of 11
A customized training plan is one way you can take your triathlon performance to the next level. Developed by Ray Kelly, the Tri Trainer app will provide you with triathlon workouts no matter your level of fitness so you can achieve your goals. Detailed training plans for your first sprint triathlon or ones to achieve a PR at your next IRONMAN will be provided on the app once you conduct an initial, free consultation with a member of the Tri Trainer team.
ACTIVEFree 9 of 11
Whether you're looking for your next big triathlon or a local 5K to get into running shape, the ACTIVE.com app will help you track down the largest selection of endurance events in the world. In addition to event information from organizers and related fees, you can use the app to sign up for upcoming races and to get tips and training advice from the app's large database of articles all in one place.
MySwimProFree 10 of 11
Mixing things up with your training sessions in the pool is must. Fortunately, the MySwimPro app has hundreds of swimming workouts in its library, ranging from beginner to advanced. You can also personalize workouts, collect advanced swimming analytics and check how your overall fitness is progressing. It's also compatible with the Apple watch and other fitness wearables.