Press kit
Logos, screenshots, and the short version.
Last updated · 2026-05-23
The short version
Plinth is a focused study tool for the Claude Certified Architect — Foundations exam. 1,200+ practice questions across 13 scenarios, two domain-weighted mock-exam modes, a weak-spot drill, 493 flashcards, a hand-curated Compendium, and a 17-section Stem Decoder with progressive-disclosure hints on every question. One-time purchase, lifetime access — grandfathered into every future update. Built by John Ryu.
One-liner
"Foundations, drilled — the prep tool for the Claude Certified Architect exam."
Founder
John Ryu. Engineer. Took the CCA-F exam, found the prep landscape thin, built the tool he wished he'd had.
Logo
The Plinth mark is three solid bars — capital, shaft, base — in terracotta accent on bone-white background.
- Mark, 512×512 PNG
- Mark, Apple icon PNG
- SVG / vector logos: email admin@plinthprep.com for the master file.
Brand colors
| Token | Hex | Use |
|---|---|---|
| Accent (terracotta) | #b85a3a | Primary brand color, CTAs, the "plinth" wordmark |
| Ink | #1d1a14 | Body text |
| Background | #f6f1e7 | Page background (Reading Room aesthetic) |
Typeface
- Display: Newsreader (Google Fonts)
- UI: Geist (Vercel Open Source)
- Mono: Geist Mono
Distribution
- Web — live at plinthprep.com.
- iOS & Android — native apps in development, launching later this year. Web purchase covers them at launch.
Screenshots
Hero, dashboard, and study-surface screenshots are available on request — email admin@plinthprep.com with the publication, deadline, and any specific shots you need.
Anthropic / Claude
Plinth is independent and not affiliated with Anthropic, PBC. Anthropic owns the Claude trademark and the Claude Certified Architect exam.