DuckDuckGo, optional Duck.ai vs Equal Spacing Calculator
A data-backed head-to-head — estimated revenue, downloads, ratings and pricing side by side, from live App Store signals. Updated continuously.
Revenue / mo
$300k–$1.7M
$4–$70
Downloads / mo
730k–3.0M
4–20
Rating
★ 4.85 (2.4M)
★ 3.86 (7)
Pricing
Free + IAP
Paid $2.99
Category
Utilities
Utilities
Released
13.1y ago
3.7y ago
Verdict: DuckDuckGo, optional Duck.ai earns more — an estimated $300k–$1.7M/mo, versus $4–$70/mo for Equal Spacing Calculator.