Heart Rate Variability Logger 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
$70–$1k
$620k–$3.4M
Downloads / mo
10–80
390k–1.6M
Rating
★ 3.11 (51)
★ 4.89 (4.9M)
Pricing
Paid $11.99
Free + IAP
Category
Health & Fitness
Health & Fitness
Released
5.6y ago
14.6y ago
Verdict: Period Calendar Period Tracker earns more — an estimated $620k–$3.4M/mo, versus $70–$1k/mo for Heart Rate Variability Logger.