Instant Heart Rate: HR Monitor 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
$310k–$1.7M
$620k–$3.4M
Downloads / mo
200k–810k
390k–1.6M
Rating
★ 3.73 (310k)
★ 4.89 (4.9M)
Pricing
Free + IAP
Free + IAP
Category
Health & Fitness
Health & Fitness
Released
16.2y ago
14.6y ago
Verdict: Their revenue estimates overlap ($310k–$1.7M/mo vs $620k–$3.4M/mo), so neither clearly earns more on the numbers alone.