Observed arrival · 2026-11-10
Improve My Serve: a one-video tennis serve check
The site offers tennis players an analysis of serve mechanics from a phone video, with prioritized fixes and drills.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Tennis players troubleshooting serve mechanics
- Worth noticing
- It labels racket drop only as a “possible” inference and excludes toss direction, ball speed, spin, and landing from its scoring.
Field notes
The filming guide recommends a side-on or directly-behind view, a camera roughly 4–6 meters away, and normal-speed footage rather than a slow-motion export. The sample material shows both a report with one priority and a clip rejected for length, suggesting the site communicates input limits as well as results. Its checkpoint table separates measured values, estimates, and unmeasured aspects.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue