- Monthly visits
- 11.6K
- Oct 2026
- Public revenue
- Undisclosed
- No public revenue evidence yet
- Entry price
- $29/mo
- Higher than 74% of peersNiche median $11.99/mo
- Launched
- 4mo ago
- 2026-07-28 · Est.
Traffic
Marketing moves
Launches, search & content, referrals, promotionsLaunched on Product HuntLaunch
Exam-real practice and a AI tutor for NCEES PE exams.
Jul 28 · 4mo agoLaunch page
Traffic sources
Traffic breakdown
Channels
- Direct33%
- Organic Search27%
- Referrals14%
- Social7%
- Other19%
Countries
- United States100%
Search
Domain authority —Domain registered 2026-06-13
| Keyword | Monthly volume |
|---|---|
| dew point calculator | 2,360 |
| pe civil exam | 880 |
| pe hvac and refrigeration | 760 |
| which pe exam should i take if i am interested in manufacturing? | 620 |
| pe practice question wre | 300 |
Traffic data: Vaneform
Pricing
Trial: None · Free tier included · 1 paid tier ($29) · Observed 2026-10-31 · Pricing page
Entry price $29/mo, Higher than 74% of peers; “Test Preparation” median is $11.99/mo.View pricing benchmark
Pages & changes
Key pages
Weekly snapshots- Homecastorprep.com/
- Pricingcastorprep.com/pricing Snapshot 2026-10-31
- Featurescastorprep.com/pe-mechanical Snapshot 2026-10-31
Changes
No pricing, plan, or positioning changes detected since tracking started.
Design
Editorial (Light canvas, airy density) featuring centered headline + cta layout and illustration / character art visuals.
First-screen preview · click to zoom
First-screen pitch & conversion flow
“Earn your stamp.”
Centered Headline + CTA hero structure paired with start free / sign up CTA and no explicit trust bar.
Conversion path: Centered Headline + CTA + Illustration / Character Art → Start Free / Sign Up
- Brand Manifesto & Curiosity
- Custom Illustration
- Metrics Strip
Palette · click to copy
- Typography
- 8.0
- Color & Contrast
- 8.0
- Layout & Spacing
- 9.0
- Craft & Polish
- 8.0
- Distinctiveness
- 7.0
Structure
- Fonts
- Inter
- Hero layout
- Centered Headline + CTA
- Primary visual
- Illustration / Character Art
- Conversion CTA
- Start Free / Sign Up
- Social proof
- No Explicit Trust Bar
- Navigation
- Full-Width Top Bar
- Theme & density
- Light · Airy
- Corners & depth
- Small Radius · Hairline borders
Preview full AI design brief (includes :root CSS variables & layout rules)Style tokens only; never copy brand names, logos, copy, or images
# Design Brief: Editorial (with Soft & Friendly)
Oversized serif headlines, narrow reading columns, and magazine-inspired grid layouts.
## Design Tokens
```css
:root {
--background: #f7f6f2;
--surface: #ffffff;
--foreground: #1c2431;
--muted-foreground: #66707a;
--accent: #815019;
--radius: 4px;
--font-heading: "Inter", ui-sans-serif, system-ui, sans-serif;
--font-body: "Inter", ui-sans-serif, system-ui, sans-serif;
}
```
Color area ratio: Background #F7F6F2 (~82%) · Surface #FFFFFF (~8%) · Text #1C2431 (~4%) · Muted Text #66707A (~4%) · Accent #815019 (~2%). Background and surface dominate the canvas; reserve the accent color for primary buttons and active states.
## Layout & Conversion Structure
- Hero layout: Centered Headline + CTA
- Navigation: Full-Width Top Bar
- Theme & density: Light · Airy
- Border radius & elevation: Small Radius; no drop shadows—separate layers with hairline borders and whitespace
- Primary visual medium: Illustration / Character Art
- Conversion CTA: Start Free / Sign Up
- Headline hook: Brand Manifesto & Curiosity
- Hero components: Custom Illustration, Metrics Strip
- Spatial layout notes: Centered Headline + CTA hero structure paired with start free / sign up CTA and no explicit trust bar.
- Visual summary: Editorial (Light canvas, airy density) featuring centered headline + cta layout and illustration / character art visuals.
## Avoid
- Generic SaaS hero templates
- Cramped multi-column feature grids
- Neon cyber accents
Implement the UI following the design tokens and layout specifications above: use only these color variables, and reserve the accent color strictly for primary actions and active states. Adopt only this visual style—never copy any reference product’s brand name, logo, copy, or imagery.
Questions & evidence
- How much does CastorPrep cost?
- Free: Free; Pro: $29/mo. Observed 2026-10-31. Check the source for current billing terms, usage limits and taxes.Source
- How much website traffic does CastorPrep get?
- Vaneform estimates 11.6K website visits in 2026-10. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
- What is CastorPrep and what platforms does it support?
- CastorPrep is catalogued under Test Preparation: Earn your stamp.. Supported platforms: Web.
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