加减乘除 - 海量题型，自动出题 vs Simply Piano: Learn Piano Fast
A data-backed head-to-head — estimated revenue, downloads, ratings and pricing side by side, from live App Store signals. Updated continuously.
Revenue / mo
$0
$760k–$4.1M
Downloads / mo
2–9
1.1M–4.5M
Rating
★ 4.50 (4)
★ 4.68 (840k)
Pricing
Free
Free + IAP
Category
Education
Education
Released
5.4y ago
10.9y ago