639hz Solfeggio Sonic Meditation by Glenn Harrold & Ali Calderwood vs Zero: Fasting & Food 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
$10–$200
$740k–$4.0M
Downloads / mo
8–40
230k–960k
Rating
★ 4.73 (15)
★ 4.82 (445k)
Pricing
Paid $3.99
Free + IAP
Category
Health & Fitness
Health & Fitness
Released
14.5y ago
9.8y ago
Verdict: Zero: Fasting & Food Tracker earns more — an estimated $740k–$4.0M/mo, versus $10–$200/mo for 639hz Solfeggio Sonic Meditation by Glenn Harrold & Ali Calderwood.