ECG Challenge vs Period Tracker and Calendar
A data-backed head-to-head — estimated revenue, downloads, ratings and pricing side by side, from live App Store signals. Updated continuously.
Revenue / mo
$3k–$13k
$220k–$890k
Downloads / mo
700–3k
73k–300k
Rating
★ 4.00 (8)
★ 4.87 (551k)
Pricing
Paid $5.99
Free + IAP
Category
Medical
Medical
Released
13.9y ago
10.8y ago
Verdict: Period Tracker and Calendar earns more — an estimated $220k–$890k/mo, versus $3k–$13k/mo for ECG Challenge.