quietmoneyCosdencode
An online learning platform for React developers: video courses plus hands-on practice in a real in-browser IDE, with an AI tutor in every lesson; it currently has four courses (JavaScript, React Fundamentals, Design Patterns in React, TypeScript) and plans to add data fetching, state management, Next.js, and more.
Darius Cosden, One-line growth story, compiled by us from public sources; speculation is marked separately below.
Revenue over time
Real payments synced by TrustMRR, in USD, by calendar month, renewals included.
- MRR
- $1,380
- Revenue, last 30 days
- $255
- All-time revenue
- $22,233
- Active subscriptions
- 57
- Payments via
- Polar
- Source
- TrustMRR, synced from the founder's payment account
1. Productwhat it sells, to whom, and how it charges
- Product
- An online learning platform for React developers: video courses plus hands-on practice in a real in-browser IDE, with an AI tutor in every lesson; it currently has four courses (JavaScript, React Fundamentals, Design Patterns in React, TypeScript) and plans to add data fetching, state management, Next.js, and more.
- Users
- Junior and mid-level developers who want to learn React and TypeScript systematically and move toward full-time front-end roles (the website says 1,808 developers are learning)
- Positioning
- The author has 10+ years of React experience and YouTube teaching influence, and the pitch is 'learn by doing' rather than watching videos, with an AI tutor in every lesson and country-by-country PPP pricing.
- Pricing
- Free $0; Plus $23/month; Pro $47/month (TrustMRR record); the website describes monthly/annual billing (annual at about 60% of the monthly price) with PPP regional pricing, but the page lists no specific amounts; the /pricing page returns 404 Billing: subscription Free tier: yes Source: TrustMRR
- Team
- solo
- Sharing mechanics
- public profiles / leaderboards Nav includes "Leaderboards" (/leaderboards); no description of it. "Join The Community" button.
“Nav includes "Leaderboards" (/leaderboards); no description of it. "Join The Community" button.”Quote from the site
2. Channelswhere new users come from and what the traffic looks like
New-user source: Other (Direct / referral / email / paid). Similarweb has very little data for this site: last month there were only 2 search keywords (cosden code, linkedin react design patterns), the channels are listed as display ads / direct / email, and visits are empty, so it cannot be treated as the channel structure. Founder Darius Cosden says on the website that his YouTube channel Cosden Solutions has hundreds of thousands of subscribers and millions of views, and his X account dariuscosden has 876 followers; the search keyword 'linkedin react design patterns' shows he also posts React content on LinkedIn; new users most likely come from these personal accounts (speculation). No channel was filled in on TrustMRR. Existing users are retained through continuously updated modules, a leaderboard, and a community.
Last month's traffic sources
Top channel measured by Similarweb, others estimated by rank
Five-class attribution
| Attributable new users, last month | Share |
|---|---|
| Other | 100% |
Direct + brand search 34%. Direct and brand search count as viral only when the site shows sharing mechanics; the largest share wins, under 5% means Other.
Language
English
Keywords
2 keywords · brand ~34% · organic 100% / paid 0%
| Similarweb top 5 keywords |
|---|
| cosden code |
| linkedin react design patterns |
Non-brand queries: linkedin react design patterns
Site metrics (Similarweb, last month)
- Visits MoM
- -100%
- Top 3 channels
- Display › Direct › Mail (top channel 0%)
3. Growth pathhow the first users arrived and what kept it growing
Classification
Basics
Timeline
Growth loop
Revenue and scale clues
Confidence and gaps
Other sites that started via “Existing audience”
Similar sitessame category, also growing via Other
FAQ
How much revenue does Cosdencode make per month?
About $333 last month (real payments synced by TrustMRR), #553 of 563 TrustMRR sites; the month before was $751.
Where do Cosdencode's new users come from?
New-user source: Other (Direct / referral / email / paid). Mostly referrals, email or paid, or mostly direct with no clear source Similarweb has very little data for this site: last month there were only 2 search keywords (cosden code, linkedin react design patterns), the channels are listed as display ads / direct / email, and visits are empty, so it cannot be treated as the channel structure. Founder Darius Cosden says on the website that his YouTube channel Cosden Solutions has hundreds of thousands of subscribers and millions of views, and his X account dariuscosden has 876 followers; the search keyword 'linkedin react design patterns' shows he also posts React content on LinkedIn; new users most likely come from these personal accounts (speculation). No channel was filled in on TrustMRR. Existing users are retained through continuously updated modules, a leaderboard, and a community.
How much does Cosdencode cost?
Free $0; Plus $23/month; Pro $47/month (TrustMRR record); the website describes monthly/annual billing (annual at about 60% of the monthly price) with PPP regional pricing, but the page lists no specific amounts; the /pricing page returns 404
Dossier confidence: medium. Parts 1 and 2 come from reading the site and Similarweb data; part 3 from public reporting, founder posts, Wayback snapshots, WHOIS and similar, with speculation marked.
The numbers: revenue comes from TrustMRR: real payments synced automatically from the founder's Stripe or other payment account, summed by calendar month, renewals included, in USD. Site visits come from the Similarweb public page; where it shows none, they are estimated from global rank or the TrustMRR payment count, as noted on the page.
Data through last month. Page updated 2026-10-31.