CosNFX Costume SFX for Wear OS

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Everyone
10+
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Everyone
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About this app

CosNFX (Costuming Networked Special Effects) turns your Wear OS watch into the effects rig for your costume. Arm it, throw an overhand or a forward strike, and the watch fires a sound effect from its own speaker, plays a reactive visual on its face, and triggers the real hardware on your suit and set: WLED strips, Philips Hue, Home Assistant (smoke machines, fans), ESP32 builds, plus DMX (Art-Net) and OSC for stage consoles and show control.

You need a Wear OS watch: the watch is the whole show, and it runs everything standalone on your wrist. The phone companion app and the browser Mission Control are its remote controls for setup and tuning, and the phone can join in as a second speaker. Built and tested on the Galaxy Watch 7.

Thirty character identities come built in, each a sound kit, colors, an effect, and a backdrop, and every one is yours to rebuild. Record your own gestures, upload your own sound effects and art, chain combos. Free covers all 30 characters and the complete sound and visual library; a single $4.99 Pro unlock adds uploads, custom gesture recording, prop and light control, multi-device audio, and Battle mode.

Costuming here means cosplay, theater and stage, haunted houses, mascot performance, magic acts, LARP, and prop making.

HOW TO USE IT
1. Install CosNFX on your Wear OS watch.
2. Open it and tap TAP TO ARM — or add the CosNFX tile to your watch and arm with a single tap.
3. Perform a gesture — it fires the sound.
4. To customize, open Mission Control in any phone or laptop browser on the same Wi-Fi (enter the 6-digit PIN the watch shows), or install the companion phone app. Pick sounds, record gestures, set the look, and wire up props.

ONE GESTURE, THREE EFFECTS
- SOUND — a low-latency, hero-grade sound fires the instant you move.
- ON-SCREEN EFFECT — a reactive energy field washes the watch face in your identity's colors.
- REAL PROPS & LIGHTS — one move flashes your costume and fires a fog burst together, straight from the watch.

MAKE IT YOURS
- Bring your own media — upload WAV, MP3, or OGG sounds and your own art, and assign them to each gesture (Pro).
- Record your own custom gestures (Pro), and calibrate the four strike gestures to the way YOU move.
- Chain gesture combos into a finisher move.
- Control the look — pick the HUD backdrop, energy field, and colors, then upload your own art (Pro).

GESTURES
Seven moves are ready out of the box: underhand, overhand, forward strike, down-punch, hip-thrust, fist-clench, and overhead raise. A wrist flick disarms hands-free.

HALLOWEEN AND HAUNT SEASON
Three Halloween sound kits come built in — haunt, phantom, and hallow — alongside the witch, vampire, and monster identities. Wire a down-punch to fire the smoke machine through Home Assistant while your WLED strips go ember-red and the watch plays the hit: a haunted-house actor can run a whole scare from one arm move.

MORE TO PLAY WITH
- Watch tile — swipe to CosNFX and one tap opens it armed.
- Companion phone app — set up almost everything from your pocket over Bluetooth, with Wi-Fi off (uploads use Mission Control), and use the phone as a second speaker and a camera-flash muzzle.
- Mission Control browser panel — tune everything from any device on your Wi-Fi, behind the watch's 6-digit PIN.
- Route your audio to the watch, phone, and browser in any mix. Link extra Mission Control screens and a whole room plays at once (Pro).
- Battle mode — link watches for versus play: strikes deal damage and holding Raise blocks a hit (Pro on each watch).

PRIVATE & STANDALONE
CosNFX runs on your own devices with no account and no ads. Mission Control is protected by a 6-digit PIN shown on the watch, and connections stay on your local network. At a venue or convention, run it over your own phone hotspot so the whole link stays on hardware you control.

REQUIREMENTS
A Wear OS watch (built and tested on the Galaxy Watch 7). Mission Control works from any device on the same Wi-Fi.
A watch gesture fires sound, visuals, and your costume's real lights and props
Updated on
Aug 27, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
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  • No data collected
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What’s new

Unlock Pro now completes here. A watch cannot show a payment sheet, so tapping Unlock Pro on your watch hands checkout to this app, where the Play payment sheet opens in place instead of sending you to a web page. Requires the matching watch update.
Content rating
Everyone
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App support

About the developer
JONATHAN CAPONE
tanner.dylan1502@emailhub.kr
2555 S Sepulveda Blvd Apt. 2 Los Angeles, CA 90064-3146 United States