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Diamond Manager

Pitch counts and fair lineups
Chris Carcerano · Sports
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App info

Developer
Chris Carcerano
Category
Sports, Productivity
Released
Sep 10, 2026
Version
1.0.0 (Sep 10, 2026)
Price
Free
Size
6.7 MB
Requires
iOS 17.0
Age rating
4+
Languages
English

In-app purchases

US English$14.99
US English$2.99
Current prices, App Store US.
🔒 Price history3 snapshots: when prices changed and new plans appearedGet Pro access

Release date

The release date was moved 1 time before launch.

About Diamond Manager

Diamond Manager does the three jobs a youth baseball coach still does on a clipboard: tracking who is legal to pitch, building a lineup that is fair, and running practice. It is built for the dugout. Big controls, one hand, readable in direct sun, and everything works with no signal at all. WHO CAN PITCH Count pitches with a button you can hit without looking. The app applies the published daily maximums and rest-day tables for each player's league age, and tells you what a decision costs before you make it: "3 more pitches reaches 21 — that becomes 1 day of rest." It knows the rules that catch coaches out. The finish-the-batter exception. The three-day consecutive block. Catching four innings ending a kid's day on the mound. Pitching then catching. When a pitcher is not eligible, it says so in plain words and tells you the day they come back. The eligibility calendar answers the…
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