Simon Grimm

@UCZZPgUIorPao48a1tBYSDgg - 124K subscribers

Hey, I’m Simon 👋 I love creating - apps, videos, experiments - and sharing what I learn along the way. You’ll find deep dives into React Native, app building, and the creative process behind it all. I’ve been teaching developers for over 10 years and built Galaxies.dev 🪐 to help others make amazing apps - but this channel is where I explore, build, and just have fun creating. Subscribe if you want to learn, get inspired, and build cool stuff together 🚀

Home Videos Live Playlists

Why Coding Courses Aren’t Enough Anymore (And What Still Is)

Why Coding Courses Aren’t Enough Anymore (And What Still Is) Simon Grimm

1.3K views - 4 days ago

10 Tips You NEED For Expo Router in 2026!

10 Tips You NEED For Expo Router in 2026! Simon Grimm

6.4K views - 1 week ago

How I Test In-App Purchases While Building an App with AI

How I Test In-App Purchases While Building an App with AI Simon Grimm

3.1K views - 3 weeks ago

Choosing the Right React Native Stack in 2026

Choosing the Right React Native Stack in 2026 Simon Grimm

24.4K views - 1 month ago

I Reviewed 3 REAL React Native Apps (Here's what I thought)

I Reviewed 3 REAL React Native Apps (Here's what I thought) Simon Grimm

7.5K views - 1 month ago

I Used React Native + instantDB to Build a Self-Building App (It Actually Works)

I Used React Native + instantDB to Build a Self-Building App (It Actually Works) Simon Grimm

4.6K views - 2 months ago

I Built a Mobile Farming Game in 6 Days (with AI + Expo)

I Built a Mobile Farming Game in 6 Days (with AI + Expo) Simon Grimm

7.7K views - 2 months ago

7 Tips to Make Your React Native App Blazing Fast! 🚀

7 Tips to Make Your React Native App Blazing Fast! 🚀 Simon Grimm

12.3K views - 2 months ago

Build a Food Delivery App with React Native (Expo Router, Maps, Reanimated, Zustand) | Wolt Clone

Build a Food Delivery App with React Native (Expo Router, Maps, Reanimated, Zustand) | Wolt Clone Simon Grimm

26.2K views - 3 months ago

Platform Specific Components, Layouts & Styling with React Native (iOS, Android & Web)

Platform Specific Components, Layouts & Styling with React Native (iOS, Android & Web) Simon Grimm

5.2K views - 3 months ago

Build Your Own Pocket Clone with React Native (Expo, SQLite, Reanimated, API Routes, IAP)

Build Your Own Pocket Clone with React Native (Expo, SQLite, Reanimated, API Routes, IAP) Simon Grimm

17.3K views - 4 months ago

React Native Apps You NEED To See!

React Native Apps You NEED To See! Simon Grimm

4.1K views - 4 months ago

Expo SDK 54 & React Native 0.81: Why you should upgrade NOW

Expo SDK 54 & React Native 0.81: Why you should upgrade NOW Simon Grimm

17.5K views - 5 months ago

Reanimated 4 = CSS for React Native?

Reanimated 4 = CSS for React Native? Simon Grimm

6.7K views - 5 months ago

Drawer Navigation with Nested Tabs using Expo Router

Drawer Navigation with Nested Tabs using Expo Router Simon Grimm

11K views - 5 months ago

5 React Native Mistakes Web Devs Keep Making

5 React Native Mistakes Web Devs Keep Making Simon Grimm

8.4K views - 6 months ago

React Native Authentication with Expo Router v5

React Native Authentication with Expo Router v5 Simon Grimm

20K views - 6 months ago

Build the Amazon App with React Native & AI Voice Agents (Vapi, NativeWind, TanStack, Expo)

Build the Amazon App with React Native & AI Voice Agents (Vapi, NativeWind, TanStack, Expo) Simon Grimm

13.6K views - 7 months ago

Your First RSC with React Native (From Start to Deploy)

Your First RSC with React Native (From Start to Deploy) Simon Grimm

9.5K views - 7 months ago

Is React Native the Future of Mobile Apps?

Is React Native the Future of Mobile Apps? Simon Grimm

17.3K views - 8 months ago

React Native Tabs Navigation with Expo Router

React Native Tabs Navigation with Expo Router Simon Grimm

27.7K views - 8 months ago

Build Your Own AI Caption Editor with React Native (Convex, ElevenLabs, NativeWind, Expo)

Build Your Own AI Caption Editor with React Native (Convex, ElevenLabs, NativeWind, Expo) Simon Grimm

8.8K views - 8 months ago

React Native Drawer Navigation with Expo Router

React Native Drawer Navigation with Expo Router Simon Grimm

16K views - 8 months ago

React Native AI Apps can't get easier (Expo & Vercel AI SDK)

React Native AI Apps can't get easier (Expo & Vercel AI SDK) Simon Grimm

15.7K views - 9 months ago

Finally React Native UI Components

Finally React Native UI Components Simon Grimm

59.9K views - 9 months ago

7 EPIC React Native Snippets You NEED to Know

7 EPIC React Native Snippets You NEED to Know Simon Grimm

22.4K views - 9 months ago

This App Onboarding prints MONEY 🤑

This App Onboarding prints MONEY 🤑 Simon Grimm

16.3K views - 9 months ago

I used AI To Clone a $1 Million Calorie Tracking Mobile App

I used AI To Clone a $1 Million Calorie Tracking Mobile App Simon Grimm

13.6K views - 10 months ago

Build a React Native Mental Health App with Stream Chat & Video Call

Build a React Native Mental Health App with Stream Chat & Video Call Simon Grimm

12.9K views - 10 months ago

The ULTIMATE Way to Build Apps in 2025! (You’ll NEVER Go Back)

The ULTIMATE Way to Build Apps in 2025! (You’ll NEVER Go Back) Simon Grimm

18.7K views - 10 months ago

Build Your Own MASTERCLASS clone in React Native

Build Your Own MASTERCLASS clone in React Native Simon Grimm

12.8K views - 10 months ago

Vibe Code SaaS & Mobile Games (Grok, Bolt, Cursor, Prompts)

Vibe Code SaaS & Mobile Games (Grok, Bolt, Cursor, Prompts) Simon Grimm

12K views - 10 months ago

Is React Native in TROUBLE? 🤯 (Lynx, React Native Framework & Vercel)

Is React Native in TROUBLE? 🤯 (Lynx, React Native Framework & Vercel) Simon Grimm

22.8K views - 11 months ago

What 3,000+ Developers Said About React Native in 2024

What 3,000+ Developers Said About React Native in 2024 Simon Grimm

5.5K views - 11 months ago

Your own iOS WIDGET in 12 Minutes with React Native

Your own iOS WIDGET in 12 Minutes with React Native Simon Grimm

25.3K views - 11 months ago

The Fastest Way to Build a Mobile App (AI + Expo = Magic)

The Fastest Way to Build a Mobile App (AI + Expo = Magic) Simon Grimm

30.1K views - 11 months ago

4 Crazy Popular React Native Apps You Need to Try

4 Crazy Popular React Native Apps You Need to Try Simon Grimm

17K views - 1 year ago

The Secrets to Shipping Mobile Apps 10x Faster

The Secrets to Shipping Mobile Apps 10x Faster Simon Grimm

11.4K views - 1 year ago

React Native Animations just got WAY EASIER (Reanimated v4)

React Native Animations just got WAY EASIER (Reanimated v4) Simon Grimm

33.1K views - 1 year ago

Top React Native ESSENTIALS Tech Stack for 2025

Top React Native ESSENTIALS Tech Stack for 2025 Simon Grimm

95.2K views - 1 year ago

The Missing Piece to Universal React Native

The Missing Piece to Universal React Native Simon Grimm

8.6K views - 1 year ago

Modern SQLite for React Native Apps with Drizzle

Modern SQLite for React Native Apps with Drizzle Simon Grimm

26.2K views - 1 year ago

The time for React Native is NOW

The time for React Native is NOW Simon Grimm

60K views - 1 year ago

React Native can do THIS || React Native App Review

React Native can do THIS || React Native App Review Simon Grimm

19.2K views - 1 year ago

The Future of App Development is Here

The Future of App Development is Here Simon Grimm

28.6K views - 1 year ago

Build a Todoist Clone with React Native (RevenueCat, Clerk, Sentry, Expo, Reanimated, SQLite)

Build a Todoist Clone with React Native (RevenueCat, Clerk, Sentry, Expo, Reanimated, SQLite) Simon Grimm

31.2K views - 1 year ago

React Native Debugging: From JS to Native

React Native Debugging: From JS to Native Simon Grimm

31.4K views - 1 year ago

The Future of React Native?

The Future of React Native? Simon Grimm

10.6K views - 1 year ago

Expo SDK 52: DOM, RSC, Router, New Architecture & Packages

Expo SDK 52: DOM, RSC, Router, New Architecture & Packages Simon Grimm

16.5K views - 1 year ago

Build an AI Voice Recorder with React Native (Firebase, Whisper API, Expo)

Build an AI Voice Recorder with React Native (Firebase, Whisper API, Expo) Simon Grimm

13.5K views - 1 year ago

Tailwind is going Mobile

Tailwind is going Mobile Simon Grimm

44.2K views - 1 year ago

Build a Threads Clone with React Native (Convex, Clerk, Sentry, Expo)

Build a Threads Clone with React Native (Convex, Clerk, Sentry, Expo) Simon Grimm

33.1K views - 1 year ago

You've Been Building React Native Lists Wrong All Along

You've Been Building React Native Lists Wrong All Along Simon Grimm

21.8K views - 1 year ago

Is this the Expo Competitor?

Is this the Expo Competitor? Simon Grimm

12.2K views - 1 year ago

Build AI Powered Mobile Apps FASTER with Expo API Routes & Cursor

Build AI Powered Mobile Apps FASTER with Expo API Routes & Cursor Simon Grimm

14.6K views - 1 year ago

10 Essential React Native Tips Every Developer Must Know

10 Essential React Native Tips Every Developer Must Know Simon Grimm

56.6K views - 1 year ago

Why React Native 3D doesn't suck (anymore)

Why React Native 3D doesn't suck (anymore) Simon Grimm

14.6K views - 1 year ago

Can Cursor AI build my React Native App?

Can Cursor AI build my React Native App? Simon Grimm

49.5K views - 1 year ago

Building a Wordle Game with React Native (Firebase, Clerk, Reanimated, MMKV, Dark Mode)

Building a Wordle Game with React Native (Firebase, Clerk, Reanimated, MMKV, Dark Mode) Simon Grimm

13.2K views - 1 year ago

Expo DOM Components are WILD

Expo DOM Components are WILD Simon Grimm

13.2K views - 1 year ago