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Developer
John Robbins
5 apps found on charts
18 total ratingsAvg ★ 4.451 currently charted
Apps by This Developer
By review count · Rank shows the best country·category rank on the latest collection date
C-17 Duty Day CalcUtilities
Released 2014-03-11 · ★ 4.2 (13)
#34
US · Utilities
Post Msn CalcTravel
Released 2015-02-25 · ★ 4.0 (2)
Not charted
C-5 Duty Day CalcTravel
Released 2015-06-23 · ★ 5.0 (1)
Not charted
KC-46 Duty Day CalcTravel
Released 2026-02-28 · ★ 5.0 (1)
Not charted
C-130 Duty Day CalcUtilities
Released 2015-06-23 · ★ 4.0 (1)
Not charted
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.