Education & Reference
D4 Chess Club™
AI-powered chess coaching platform built for club-level players.
80/100
7-Frame production-readiness — according to Legit.Show
Is D4 Chess Club™ production-ready?
Legit.Show measured D4 Chess Club™ at 80 out of 100 on its 7-Frame production-readiness benchmark (public-surface assessment). Its strongest frame is Reliability (100); its weakest is Security (30). Every frame is measured deterministically from the public surface — exactly what was observed is shown below.
The 7 Frames
- Performance — 75/100
- Accessibility — 90/100
- Security — 30/100
- Privacy — 75/100
- Reliability — 100/100
- Standards — 100/100
- Discoverability — 87/100
What we measured
- Security headers present: HSTS.
- No Content-Security-Policy.
- Served over HTTPS with a valid certificate.
- Lighthouse performance score 75/100 (140 ms to first byte).
- Returns a proper 404 for unknown routes.
- 3 of 3 sampled routes reachable.
- Has a reachable privacy policy.
- Sets cookies / loads scripts with no consent prompt.
Who it's for
Club players · Chess learners · Intermediate players · Players wanting to improve · Casual to competitive players
Pricing
Free plan ($0 forever); Premium $5.99/month with 7-day money-back guarantee