Cyclemeter might be a bit more popular than Runtastic. We know about 1 link to it since March 2021 and only 1 link to Runtastic. 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.
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: over 1 year ago
On the off chance that it's helpful to you, I'll also mention why I was exporting data from it. I wanted a full featured app for keeping track of historical ride data, and the ones that ship with hardware devices like the Elemnt are pretty bare bones. I also didn't want anything that uploaded data to a third-party cloud service. I found https://abvio.com/cyclemeter/ which worked well for this. After a ride, I... Source: about 3 years ago
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