Published on in Vol 9, No 6 (2021): June
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/22587, first published
.
![Quality of Physical Activity Apps: Systematic Search in App Stores and Content Analysis Quality of Physical Activity Apps: Systematic Search in App Stores and Content Analysis](https://asset.jmir.pub/assets/4c20186e904bdb6ee0817fd4fefe143f.png 480w,https://asset.jmir.pub/assets/4c20186e904bdb6ee0817fd4fefe143f.png 960w,https://asset.jmir.pub/assets/4c20186e904bdb6ee0817fd4fefe143f.png 1920w,https://asset.jmir.pub/assets/4c20186e904bdb6ee0817fd4fefe143f.png 2500w)
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