CF

Duolingo Clone

11h 12m 32s
English
Paid

In this 11-hour course, you will learn how to create your own SaaS application for language learning, similar to Duolingo. Users will be able to select language courses and go through structured lessons with beautiful design, characters, audio, and visual effects. You will study Next.js 14, Drizzle ORM, PostgreSQL, Server Actions, Stripe, ShadcnUI, Tailwind, and much more.

About the Author: Antonio Erdeljac (Code With Antonio)

Antonio Erdeljac (Code With Antonio) thumbnail

Antonio Erdeljac is a Croatian developer behind the Code With Antonio YouTube channel — one of the more active independent full-stack JavaScript channels online, with a focus on long-form, project-based clones of well-known applications (Netflix clone, Spotify clone, Notion clone, Discord clone, Trello clone). The channel's distinctive contribution is the depth of those clone tutorials — each typically runs 8-15 hours and covers the full back-end-to-front-end implementation of a working app.

The course catalog covers the modern Next.js / React stack: App Router patterns, server components, server actions, Prisma + PostgreSQL, NextAuth / Clerk authentication, Stripe billing, file uploads, real-time features with Pusher, and the deployment workflow with Vercel. Material is paid extended versions of the YouTube content with additional features and context.

The CourseFlix listing under this source carries over 15 Code With Antonio courses spanning that range. Material is aimed at intermediate-and-up React developers building real full-stack applications.

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#1: Intro
All Course Lessons (29)
#Lesson TitleDurationAccess
1
Intro Demo
02:24
2
Setup
09:52
3
Buttons
17:43
4
Marketing Page
09:24
5
Authentication
21:20
6
Footer
07:06
7
Main Layout
17:53
8
Sidebar
12:54
9
Learn Page Wrappers
22:09
10
Drizzle & Neon
13:59
11
Courses Page
18:21
12
User Progress
28:44
13
Seed Script
18:11
14
Schema
24:21
15
Units
27:38
16
Lesson Button
33:22
17
Course Progress
21:37
18
Lesson Header
20:44
19
Exit Modal
11:29
20
Challenge Cards
38:13
21
Challenge Footer
25:18
22
Challenge Actions
42:06
23
Challenge Finish Screen
35:44
24
Challenge Practice
17:12
25
Shop
17:39
26
Stripe
44:34
27
Details
45:02
28
Admin
55:39
29
Deployment
11:54
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Frequently asked questions

What is Duolingo Clone about?
In this 11-hour course, you will learn how to create your own SaaS application for language learning, similar to Duolingo. Users will be able to select language courses and go through structured lessons with beautiful design, characters…
Who teaches this course?
It is taught by Antonio Erdeljac (Code With Antonio). You can find more courses by this instructor on the corresponding source page.
How long is the course?
It contains 29 lessons with a total runtime of 11 hours 12 minutes. Every lesson is available to watch online at your own pace.
Is it free to watch?
It is part of CourseFlix's premium catalog. A subscription unlocks the full video player; the course description, table of contents, and preview information are available to everyone.
Where can I watch it online?
The course is available to watch online on CourseFlix at https://courseflix.net/course/duolingo-clone. The page hosts every lesson with the integrated video player; no download is required.