Observed arrival · 2026-09-02
Seam: Pitch Charting, From Warm-Up to Final Out
An iPhone app for recording pitches in real time, then reviewing velocity, location, results, counts, and pitcher-level performance.
○Open
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
The app records location, pitch type, result, and velocity during live play, while keeping count, outs, and batters faced in view. Its post-game layer groups the outing by inning and batter and adds a color-coded location map with filters for count, result, and batter handedness. The site also lists running PC, BF, H, SO, and BB totals per inning, plus a game score based on a run-expectancy model. Offline charting and later synchronization are attributed to Seam Pro.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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