Observed arrival · 2026-11-12
Optic turns tennis serves into phone-based feedback
An upcoming iPhone app says it can identify serves in video, score phases of the motion, and suggest one adjustment at a time.
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$Paid
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Tennis players practising their serves
- Worth noticing
- The site says the app works offline without an account; its browser-based serve example is labeled simulated.
Field notes
The homepage lays out a courtside setup checklist, including framing the player's shoes and head and checking light and steadiness before serving. Its lab lets visitors change serve type and inspect phases such as toss, load, and contact, but labels the example simulated. The site also claims session recording continues with the phone locked and that recordings stay on-device; those are product descriptions rather than demonstrated capabilities here.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
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