- Monthly visits
- 217.1K
- Up2.1%MoMSep 2026
- Public revenue
- Undisclosed
- No public revenue evidence yet
- Entry price
- Free
- No monthly subscription pricing
- Launched
- 3y ago
- 2022-11-20 · Est.
Traffic
Open Source & Self-Hosting
GitHub · MCP / Skill
Last commit 2026-10-08
- GitHub Stars
- ★ 644
- Forks
- 81
- License
- See repository
- Primary language
- —
Traffic sources
Sep 2026
Traffic breakdown
Channels
- Direct57%
- Organic Search30%
- Referrals8%
- Other5%
Countries
- China33%
- United States14%
- United Kingdom10%
- Brazil6%
- India4%
Search
Domain authority —Domain registered 2022-11-20
| Keyword | Monthly volume |
|---|---|
| epub reader | 122.7K |
| epub | 104.6K |
| epub reader online | 15.2K |
| epub阅读器 | 4,120 |
| epub在线 | 120 |
Traffic data: Vaneform
Pricing
Website does not list public plan prices.
Trial: None · Observed 2026-11-05 · Source page
Pages & changes
Tracked since 2026-11-04
Key pages
Weekly snapshotsHome
www.flowoss.com/ Snapshot 2026-11-05
Changes
No pricing, plan, or positioning changes detected since tracking started.
Design
First-screen visual analysis & :root CSS
Editorial (Light canvas, airy density) featuring centered headline + cta layout and product ui screenshot / component visuals.
First-screen preview · click to zoom
First-screen pitch & conversion flow
“Redefine ePub reader”
Centered Headline + CTA hero structure paired with start free / sign up CTA and no explicit trust bar.
Conversion path: Centered Headline + CTA + Product UI Screenshot / Component → Start Free / Sign Up
- Category Positioning Anchor
- Large Hero Product Shot
Palette · click to copy
5-D design score7.1 / 10
- Typography
- 8.0
- Color & Contrast
- 7.0
- Layout & Spacing
- 7.0
- Craft & Polish
- 7.0
- Distinctiveness
- 6.0
Structure
- Fonts
- Source Serif 4 / Inter
- Hero layout
- Centered Headline + CTA
- Primary visual
- Product UI Screenshot / Component
- Conversion CTA
- Start Free / Sign Up
- Social proof
- No Explicit Trust Bar
- Navigation
- Full-Width Top Bar
- Theme & density
- Light · Airy
- Corners & depth
- Sharp · 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 Minimal Monochrome)
Oversized serif headlines, narrow reading columns, and magazine-inspired grid layouts.
## Design Tokens
```css
:root {
--background: #ffffff;
--surface: #f7f8fa;
--foreground: #111111;
--muted-foreground: #8a8a8a;
--accent: #111111;
--radius: 0px;
--font-heading: "Source Serif 4", serif;
--font-body: "Inter", ui-sans-serif, system-ui, sans-serif;
}
```
Color area ratio: Background #FFFFFF (~62%) · Surface #F7F8FA (~16%) · Text #111111 (~10%) · Muted Text #8A8A8A (~6%) · Accent #111111 (~6%). 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: Sharp; no drop shadows—separate layers with hairline borders and whitespace
- Primary visual medium: Product UI Screenshot / Component
- Conversion CTA: Start Free / Sign Up
- Headline hook: Category Positioning Anchor
- Hero components: Large Hero Product Shot
- 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 product ui screenshot / component 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 website traffic does Flow get?
- Vaneform estimates 217.1K website visits in 2026-09. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
- What is Flow and what platforms does it support?
- Flow is catalogued under Books & Reading: Redefine ePub reader. Supported platforms: Web.
- Is Flow open source?
- Flow has a public repository (https://github.com/pacexy/flow) with its source repository published, recording 644 GitHub stars.Source
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Entertainment & Media / Books & Reading
These products share a catalog category. Compare customer tasks, features and deployment requirements before treating them as alternatives.
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