Based on our record, Elite HRV should be more popular than RunKeeper. It has been mentiond 4 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
There are many many apps/devices you can use - I settled on using this heart rate monitor and this app. Source: over 2 years ago
Your H10 will work with this app: https://elitehrv.com/. Source: almost 3 years ago
Butekyo breathing & especially HRV training will help - A LOT. Go to elitehrv.com. Source: about 3 years ago
If cost is an issue, you can use a simple Polar H10 chest strap which lasts a really long time and is a one time cost of $70 USD (depending on where/when you buy it). It can be used with many apps, such as Elite HRV like you've mentioned, and many people use Elite HRV and a Polar H10 to monitor/predict/avoid over training - from novice fitness to literal Olympic gold medalists. (Disclosure: I created Elite HRV,... Source: over 3 years ago
Runkeeper: Asics’ fitness tracker is available for iOS and Android and does just about everything in terms of route planning, activity tracking, and metrics. Source: over 2 years ago
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MyFitnessPal - Track the number of calories that you consume each day with MyFitnessPal. The app also lets you create a diet and track the exercise that you complete each day whether it's walking, running or some other type of program.