Only the current version so far — new entries appear as the app ships updates.
FELS is a books & reference app by FELS LLC with 5,000+ downloads (about 9.2K estimated). Rated 5.0 from 82 ratings. Released Feb 23, 2021. Install growth, rank history, SDKs and ad networks.
From the store listing: “FELS is a global movement dedicated to sharing incredible content and insights.”