$10, $12/month. $11/month is most wide-spread price, but the charge
is typically annual.Structure
Many apps provide levels of advancement.
Topics
Many apps provide meditations on user’s problematic areas: family, stress, work.
SEO
Most popular apps are well-ranked and search-engine optimized.
Work-related meditations
Work-related meditations are provided by almost every app.
High-end vs low-end
More expensive apps have more topics, more levels and guided meditations.