Free Course — No signup required

Learn Android Development
in 5 Days

Kotlin is a better Java. Build Android UIs with Compose. Persist data. Publish your app.

5 lessons
Self-paced
~60 min/day
Free forever
No account needed
Start Day 1 — Free → See what's covered
What you'll learn

Kotlin in 5 Days

Free 5-day Kotlin course. Kotlin syntax, Android basics, Jetpack Compose UI, Room database, and publishing to the Play Store.

  • Write idiomatic Kotlin: data classes, lambdas, extension functions
  • Build Android UIs with Jetpack Compose declaratively
  • Use coroutines and Flow for async operations
  • Persist data with Room database and DAO pattern
  • Navigate between screens with Navigation Compose
  • Sign and publish an app to the Google Play Store
Jetpack
Compose
Coroutines
built-in
5
lessons
$0
cost
5-Day Curriculum

Every lesson has a real exercise.
No theory without practice.

01
Kotlin Syntax & Idioms
Data classes, null safety, extensions, lambdas, coroutines intro
data classesnull safetyextensions
→
02
Android & Compose Basics
Activity lifecycle, Composable functions, state, previews
Composable@Statepreviews
→
03
Navigation & ViewModels
Navigation Compose, ViewModel, StateFlow, MVVM pattern
ViewModelStateFlownavigation
→
04
Room Database
Entities, DAOs, RoomDatabase, migrations, querying with Flow
RoomDAOentities
→
05
Publishing to Play Store
Build variants, signing, Play Console, store listing
Play ConsolesigningAAB
→
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Your instructor
B
Bo Peng
Founder, Precision AI Academy

Kaggle Top 200 data scientist. Trained 400+ professionals across universities and federal agencies. Built production systems at scale. This course is practical first — every lesson has code you can run and an exercise you can finish in under an hour.

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