ALTCHA
The privacy-friendly CAPTCHA that stops bots and spam.
altcha.org SourceSecurity & Privacy / Fraud Prevention & Verification
- Monthly visits
- 229.3K
- Down17.0%MoMOct 2026
- Public revenue
- Undisclosed
- No public revenue evidence yet
- Entry price
- $20.41/mo
- Higher than 57% of peersNiche median $19/mo
- Launched
- 2y ago
- 2023-11-16 · Est.
Traffic
Marketing moves
Launches, search & content, referrals, promotionsNew product launchLaunch
Nov 16, 2023 · 2y agoWebsite
Open Source & Self-Hosting
- GitHub Stars
- Public repo
- Forks
- —
- License
- See repository
- Primary language
- —
Traffic sources
Traffic breakdown
Channels
- Direct54%
- Referrals31%
- Organic Search14%
- Other1%
Countries
- United States15%
- Ecuador8%
- Mexico7%
- Brazil7%
- France7%
Search
Domain authority —Domain registered 2023-11-16
| Keyword | Monthly volume |
|---|---|
| captcha | 122.6K |
| altcha | 5,690 |
| altcha captcha | 300 |
| altcha sentinel | 260 |
| what are my options for adding captcha for my website | 250 |
Traffic data: Vaneform
Pricing
Trial: Starting at € 18.90 / month with a free 14-day trial. · Enterprise custom tier · Observed 2026-11-05 · Pricing page
Entry price $20.41/mo, Higher than 57% of peers; “Fraud Prevention & Verification” median is $19/mo.View pricing benchmark
Pages & changes
Key pages
Weekly snapshots- Homealtcha.org/
- Pricingaltcha.org/pricing/ Snapshot 2026-11-05
- Featuresaltcha.org/sentinel-api-docs-v1.html#description/introduction Snapshot 2026-11-05
Changes
Design
Minimal Monochrome (Light canvas, airy density) featuring split copy & visual layout and interactive hero demo / tool visuals.
First-screen preview · click to zoom
First-screen pitch & conversion flow
“The privacy-friendly CAPTCHA that stops bots and spam.”
Split Copy & Visual hero structure paired with start free / sign up CTA and customer / press logo strip.
Conversion path: Split Copy & Visual + Interactive Hero Demo / Tool → Start Free / Sign Up · Trust bar: Customer / Press Logo Strip
- Category Positioning Anchor
- Customer Logo Wall
Palette · click to copy
- Typography
- 7.0
- Color & Contrast
- 7.0
- Layout & Spacing
- 8.0
- Craft & Polish
- 7.0
- Distinctiveness
- 6.0
Structure
- Fonts
- Inter
- Hero layout
- Split Copy & Visual
- Primary visual
- Interactive Hero Demo / Tool
- Conversion CTA
- Start Free / Sign Up
- Social proof
- Customer / Press Logo Strip
- Navigation
- Full-Width Top Bar
- Theme & density
- Light · Airy
- Corners & depth
- Medium Radius · With shadow
Preview full AI design brief (includes :root CSS variables & layout rules)Style tokens only; never copy brand names, logos, copy, or images
# Design Brief: Minimal Monochrome (with Enterprise Clean)
Monochrome palette with a single accent color, hairline dividers, and generous whitespace.
## Design Tokens
```css
:root {
--background: #ffffff;
--surface: #f7f8fa;
--foreground: #111111;
--muted-foreground: #6b7280;
--accent: #2f3fe0;
--radius: 8px;
--font-heading: "Inter", ui-sans-serif, system-ui, sans-serif;
--font-body: "Inter", ui-sans-serif, system-ui, sans-serif;
}
```
Color area ratio: Background #FFFFFF (~72%) · Surface #F7F8FA (~12%) · Text #111111 (~8%) · Muted Text #6B7280 (~5%) · Accent #2F3FE0 (~3%). Background and surface dominate the canvas; reserve the accent color for primary buttons and active states.
## Layout & Conversion Structure
- Hero layout: Split Copy & Visual
- Navigation: Full-Width Top Bar
- Theme & density: Light · Airy
- Border radius & elevation: Medium Radius; use elevation shadows to separate layers
- Primary visual medium: Interactive Hero Demo / Tool
- Conversion CTA: Start Free / Sign Up · Trust bar uses Customer / Press Logo Strip
- Headline hook: Category Positioning Anchor
- Hero components: Customer Logo Wall
- Spatial layout notes: Split Copy & Visual hero structure paired with start free / sign up CTA and customer / press logo strip.
- Visual summary: Minimal Monochrome (Light canvas, airy density) featuring split copy & visual layout and interactive hero demo / tool visuals.
## Avoid
- Multi-stop neon gradients
- Heavy drop shadows
- More than one competing accent color
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 ALTCHA cost?
- Cloud: € 47 /month / € 470 /year; Cloud Plus: € 137 /month / € 1,370 /year; Cloud Max: € 187 /month; Professional: € 99 /month; Enterprise: € 799 /month; Enterprise Lifetime: Contact sales; WordPress Professional: € 18.90 /month; WordPress Lifetime: € 499 one-time; WordPress Agency: € 119.90 /month. Observed 2026-11-05. Check the source for current billing terms, usage limits and taxes.Source
- How much website traffic does ALTCHA get?
- Vaneform estimates 229.3K website visits in 2026-10. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
- What is ALTCHA and what platforms does it support?
- ALTCHA is catalogued under Fraud Prevention & Verification: The privacy-friendly CAPTCHA that stops bots and spam.. Supported platforms: API.
- Is ALTCHA open source?
- ALTCHA has a public repository (https://github.com/altcha-org/altcha-lib-cpp) with its source repository published.Source
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