Skip to main content
Particle effects are short bursts of moving shapes (confetti, sparkles, hearts, and so on) that play over a screen. Use them to mark a success moment, a completed step, or a like. You can play them automatically when a screen appears, or fire them from a tap with an action.

​
Effect types

The Effect picker offers nine particle effects:
EffectLook
ConfettiMulti-colored paper pieces falling from the top
SparklesGlittering sparkles bursting from the center
FireworksBurst explosions rising from the bottom
SnowSoft snowflakes drifting down
HeartsHeart shapes floating up
StarsStar shapes twinkling and floating
EmojiYour own emoji characters falling or floating
BubblesSoft circles floating upward
PetalsFlower petals drifting down
Each effect ships with sensible defaults for direction, color palette, density, and timing, so picking an effect is usually enough.

​
Configuration

Wherever you configure particles, you get the same controls. A grid of one-click presets sits at the top (Celebration, Subtle Sparkle, Grand Finale, Winter Mood, Love, Gold Stars, Party, Dreamy, Spring). Below that:
  • Effect: one of the nine types above.
  • Duration: how long the burst plays, 500 to 15000 ms.
  • Density: Light, Medium, or Heavy (how many particles).
  • Size: Small, Medium, or Large.
  • Colors: Default (the effect’s palette) or Custom (pick your own swatches).
  • Emoji: shown only for the Emoji effect. Add the characters to emit.
An Advanced section adds:
  • Direction: Top (fall down), Bottom (float up), Left, Right, Center (burst), or All edges.
  • Spread: the emission cone angle, 0 to 360 degrees.
  • Gravity: -2 to 2, where 1 is normal downward pull and negative values rise.
  • Speed: a velocity multiplier, 0.1 to 3.
  • Haptic: None, Light, Medium, Heavy, or Success.
Particles are positioned by direction and spread, not by exact coordinates. You aim the burst, you do not place each particle.

​
Two ways to fire particles

​
Auto-play on a screen

Select a screen and open its Particle Effect section. Turn on Enable Particle Effect, then:
  • Trigger: On Appear (play as soon as the screen shows) or After Delay (with a Delay slider, 0 to 5000 ms).
  • Loop continuously: keep replaying the effect instead of playing it once.
  • The full particle config from above.
Use this for a screen whose whole purpose is a celebration, like a “You’re all set” success screen.

​
From an action

To fire particles in response to a tap, add a Trigger Particle Effect action in a component’s Interactions (on the Logic tab). It shows the same particle config, plus a per-action Delay so you can offset the burst from the tap. See Interactions and actions for how actions are built. You can also fire a particle burst as a screen timeline event by setting an event’s action to Particle Effect. See Animations and timeline.

​
Example: confetti on success, hearts on a tap

1

Confetti when the success screen appears

Select your success screen and open Particle Effect. Turn on Enable Particle Effect, set Trigger to On Appear, and pick the Celebration preset (Confetti, heavy, with a Success haptic). Leave Loop continuously off so it plays once.
2

A like button that bursts hearts

Select the like button and open Interactions on the Logic tab. Add a Trigger Particle Effect action. Set the Effect to Hearts, and lower the Duration so it is a quick burst.
3

Preview both

Open the preview and tap the button to see the heart burst, then navigate to the success screen to see the confetti.

​
Notes and warnings

  • Use particles sparingly. They are for moments, not for every screen. A celebration on every step stops feeling like a celebration.
  • Particles plus motion backgrounds can be heavy. Both animate continuously. Combining a looping particle effect with a motion background can strain older devices. Prefer a one-shot burst.
  • The emoji effect needs emoji. If you choose the Emoji effect and add none, it falls back to a default. Add the characters you actually want.

​
Common mistakes

  • A looping effect that never stops. Turning on Loop continuously (or a looping preset like Snow or Bubbles) keeps particles running for as long as the screen is up. Leave loop off for a one-time burst.
  • Emoji effect with no emoji set. Pick the emoji you want rather than relying on the fallback.
  • Expecting precise placement. Particles emit from a Direction within a Spread angle. There is no per-particle position, so aim with direction and spread instead.