Zef

Zef — David Kieffer is currently ranked across multiple countries on the App Store Top Free chart in the Sports category, with its strongest position in Gabon at #42. The app reached its all-time peak of #28 on 2026-07-23, matching its best rank over the last 30 days, but its 30-day average sits lower at #40. Recent movement shows a mild downward trend, with Germany dropping 15 spots to #61 and Switzerland falling 10 places to #74, while Mauritius ticked up one position to #77. Overall, the app remains in a steady but slightly cooling phase, hovering in the #40–#90 range across its charted markets.