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Developer
Marc Kerstein
6 apps found on charts
572 total ratingsAvg ★ 4.981 currently charted
Apps by This Developer
By review count · Rank shows the best country·category rank on the latest collection date
WikiTestEntertainment
Released 2016-12-03 · ★ 4.9 (372)
Not charted
EarwormEntertainment
Released 2015-01-09 · ★ 5.0 (126)
Not charted
DFB X (Digital Force Bag X)Entertainment
Released 2024-06-19 · ★ 5.0 (50)
Not charted
Onyx MagicEntertainment
Released 2025-12-19 · ★ 5.0 (13)
Not charted
Bridge - Magic App AIEntertainment
Released 2025-01-02 · ★ 5.0 (7)
Not charted
PlumaEntertainment
Released 2025-09-23 · ★ 5.0 (4)
#97
US · Entertainment
TIP
A successful small developer's portfolio is an idea playbook. Look at which category they started in, what variations followed their hit, and which apps failed — you'll see validated strategy patterns.