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
$9–$200
$30k–$170k
Downloads / mo
4–20
110k–470k
Rating
★ 4.00 (8)
★ 4.87 (558k)
Pricing
Paid $5.99
Free + IAP
Category
Medical
Medical
Released
14.2y ago
11.1y ago
Verdict: Period Tracker and Calendar earns more — an estimated $30k–$170k/mo, versus $9–$200/mo for ECG Challenge.