Products

Solfej

Your Complete Music Theory Resource

solfej.io Education / Skills & Online Courses

AI Benchmark
Desktop
Mobile
Monthly visits
51.5K
Down2.0%MoMOct 2026
MRR
$420Claimed
Disclosed 2026-09-29Indie Hackers
Entry price
Unknown
Freemium model, plan pricing not identified yet
Creators
Shayan Javadi
@solfej_app· 26 followers
Launched
7y ago
2019-11-17 · Est.

Traffic & revenue

Monthly visitsData through Oct 2026
MRRSelf-reported, unverified · Indie Hackers
  • Sep 2026$420Self-reported MRR · unverified
Events1 revenue disclosure · 3 changes

Revenue evidence

Publicly disclosed & verified revenue figures, sorted by date

Marketing moves

Launches, search & content, referrals, promotions
X accounts@solfej_app
  • Launched on Product HuntLaunch

    Searchable database of over 10,000 different chords

    Feb 23, 2020 · 6y agoLaunch page

  • Launched on Product HuntLaunch

    Searchable library of over 6000 different scales

    Feb 8, 2020 · 6y agoLaunch page

  • Launched on BetaListLaunch

    Solfej – The best new way to learn music theory — The best new way to learn music theory

    Dec 13, 2019 · 6y agoLaunch page

  • Launched on Product HuntLaunch

    The Best New Way To Learn Music Theory

    Nov 17, 2019 · 7y agoLaunch page

Traffic sources

Oct 2026

Traffic breakdown

Channels

  • Organic Search66%
  • Direct20%
  • Referrals9%
  • Other5%

Countries

  • United States16%
  • France10%
  • Brazil9%
  • Russia7%
  • Germany7%

Search

Domain authority 14Domain registered 2019-08-10

KeywordMonthly volume
amaj742.2K
c4 chord140
piano grid chord superlocrian—
d7alt quel accord—
ギターコード検索サイト—

Traffic data: Vaneform

Pricing

Website does not list public plan prices.

Trial: None · Observed 2026-11-04 · Source page

Pages & changes

Tracked since 2019-11-17

Key pages

Weekly snapshots
www.solfej.io/ Snapshot 2026-11-04

Changes

  1. Nov 1 · 15d ago

    Adopted technology: Google AdSenseFeatures

    —→Google AdSense

    At the time: 51.5K visits/mo2 concurrent moves
  2. Nov 1 · 15d ago

    Adopted technology: Priority HintsFeatures

    —→Priority Hints

    At the time: 51.5K visits/mo2 concurrent moves
  3. Nov 1 · 15d ago

    Adopted technology: reCAPTCHAFeatures

    —→reCAPTCHA

    At the time: 51.5K visits/mo2 concurrent moves

Design

First-screen visual analysis & :root CSS

Soft & Friendly (Light canvas, airy density) featuring split copy & visual layout and product ui screenshot / component visuals.

First-screen preview · click to zoom

First-screen pitch & conversion flow

“Become A Better Musician”

Split Copy & Visual hero structure paired with download app / install extension CTA and no explicit trust bar.

Conversion path: Split Copy & Visual + Product UI Screenshot / Component → Download App / Install Extension

Palette · click to copy

5-D design score6.9 / 10
Typography
7.0
Color & Contrast
7.0
Layout & Spacing
7.0
Craft & Polish
7.0
Distinctiveness
6.0

Structure

Fonts
Inter
Primary visual
Product UI Screenshot / Component
Social proof
No Explicit Trust Bar
Navigation
Full-Width Top Bar
Theme & density
Light · Airy
Corners & depth
Pill · 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: Soft & Friendly

Warm low-saturation pastels, generous rounded corners, and approachable illustrations.

## Design Tokens

```css
:root {
  --background: #ffffff;
  --surface: #f4f6f8;
  --foreground: #1b2a4a;
  --muted-foreground: #5e6b7a;
  --accent: #e86b7a;
  --radius: 9999px;
  --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 (~58%) · Surface #F4F6F8 (~14%) · Text #1B2A4A (~10%) · Muted Text #5E6B7A (~8%) · Accent #E86B7A (~10%). 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: Pill; use elevation shadows to separate layers
- Primary visual medium: Product UI Screenshot / Component
- Conversion CTA: Download App / Install Extension
- Headline hook: Outcome & Speed Promise
- Hero components: Custom Illustration, Large Hero Product Shot
- Spatial layout notes: Split Copy & Visual hero structure paired with download app / install extension CTA and no explicit trust bar.
- Visual summary: Soft & Friendly (Light canvas, airy density) featuring split copy & visual layout and product ui screenshot / component visuals.

## Avoid

- Harsh pure-black backgrounds
- Sharp 0px corners
- Cold technical jargon in hero copy

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 Solfej get?
Vaneform estimates 51.5K website visits in 2026-10. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
What is Solfej and what platforms does it support?
Solfej is catalogued under Skills & Online Courses: Your Complete Music Theory Resource. Supported platforms: Mobile App.
What is Solfej's publicly disclosed revenue?
Indie Hackers records a founder-reported figure of $420 /mo stated on 2026-09-29.Source

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