Back to reels
Mobile UI Β· 10s

Built a Stock Trading UI with Slot-Machine Digit Flip in React Native

A trading screen where each digit of the price scrolls independently when it changes, like a slot machine reel. No animation library: the flip is built from React Native's own primitives. The effect is small, and it's the only reason anyone remembers the screen.

8,155 views10sMar 15, 2026
Stack
React NativeReanimatedExpo
Views
8,155
Duration
10s
Follow
Write-up

About this build

A trading screen where each digit of the price scrolls independently when it changes, like a slot machine reel. No animation library: the flip is built from React Native's own primitives. The effect is small, and it's the only reason anyone remembers the screen.

Built a Stock Trading UI with Slot-Machine Digit Flip in React Native πŸ“ˆ

flips independently like a slot machine reel πŸ“ˆ No library. No native module. Just Reanimated + a vertical strip of 0–9 behind an overflow:hidden clip. Price updates every 2.8s β†’ each digit animates to its new position with spring physics. The whole price component is under 40 lines. Stack used:

  • React Native Reanimated
  • react-native-svg for the chart
LIKE WHAT YOU SEE?

I’m available for freelance & contract React Native work β€” apps, features, UI implementation, you name it.

Read nextReact Native animation examples, with the technique behind each

More React Native UI reels

All 41 reels β†’