Based on our record, Plan should be more popular than Runtastic. It has been mentiond 3 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's an app called Plan that I personally use to keep track of the To Do list of my projects. I'm pretty sure one task can be put in two days as well. You can drag your task into the calendar. Source: over 1 year ago
I use Plan - https://getplan.co/login - because it integrates with other calendar apps, you can just drag and drop tasks into any free time slots in your day. Source: over 2 years ago
I would take a look at Plan (free), Hourstack (paid) or Sunsama (paid). Source: over 2 years ago
Workaround is to use SHealth only, export gpx file, then import it through runtastic.com (Profile (Arrow Next to profile picture) ->Settings->Activity Import). The imported workout count for the challenges. Source: almost 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.