Runtastic might be a bit more popular than GO2SLEEP. We know about 1 link to it since March 2021 and only 1 link to GO2SLEEP. 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.
If you're only concerned with sleep data, check out sleepon.us. Love mine. Source: about 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: over 1 year ago
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