Calm Health vs Period Calendar Period Tracker
A data-backed head-to-head — estimated revenue, downloads, ratings and pricing side by side, from live App Store signals. Updated continuously.
Revenue / mo
$0
$930k–$5.0M
Downloads / mo
5k–20k
590k–2.4M
Rating
★ 4.45 (1k)
★ 4.88 (4.9M)
Pricing
Free
Free + IAP
Category
Health & Fitness
Health & Fitness
Released
3.0y ago
14.4y ago