ClapTimer - BJJ Boxing Timer
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Hands-free boxing/BJJ timer - clap to start, pause & reset. No touch needed!
- Downloads
- 6+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Jul 15
- 2026 Β· v1.4
Screenshots
About ClapTimer - BJJ Boxing Timer
π ClapTimer - The Hands-Free Round Timer for Combat Sports & CrossFit
Tired of touching your phone with sweaty gloves? ClapTimer uses AI-powered clap detection to control your round timer completely hands-free. Just clap once to start or pause, clap twice to reset. It's that simple.
π₯ PERFECT FOR:
β’ Boxing training
β’ Brazilian Jiu-Jitsu (BJJ) drilling
β’ Muay Thai rounds
β’ CrossFit intervals & EMOM workouts
β’ Wrestling practice
β’ MMA conditioning
β’ Tabata & HIIT training
β’ Any sport that uses round timers
β±οΈ HOW IT WORKS:
β’ π 1 Clap β Start or Pause the timer
β’ ππ 2 Claps β Reset the current round
β’ No need to touch your phone during training!
π― KEY FEATURES:
β AI-Powered Clap Detection
Uses Google's YAMNet machine learning model running entirely on your device to accurately distinguish claps from speech, music, and background noise. No internet required for detection.
β Fully Configurable Timer
β’ Set round length (minutes or seconds)
β’ Set rest duration
β’ Set total number of rounds
β’ Configure warning countdown (with sound alert before round/rest ends)
β’ Tap any value to type it directly
β Audio Feedback
β’ Boxing bell sound at round start and end
β’ Countdown beep warning before time runs out
β’ Voice announcements: "Round started", "Round paused", "Round over. Rest."
β’ Sound on/off toggle for silent training
β’ Voice language matches your device language
β Works in Background
β’ Keeps listening for claps with screen off
β’ Foreground service with notification
β’ Stop button in notification
β’ Auto-stops after 60 minutes of inactivity to save battery
β Adjustable Sensitivity
β’ Slider to fine-tune clap detection sensitivity
β’ Default set to 90% (highly reactive)
β’ Lower it if you get false positives in noisy environments
β Clean, Dark UI
β’ Large, readable timer display
β’ Auto-sizing text fits any screen
β’ Round/Rest phase clearly indicated with colors
β’ Works in any screen orientation
π PRIVACY FIRST:
β’ NO audio is ever recorded, stored, or sent anywhere
β’ All audio processing happens locally on your device
β’ No account needed, no tracking, no data collection
β’ Microphone only active when the listening service is running
π‘ TIPS FOR BEST RESULTS:
β’ Clap loudly and sharply for best detection
β’ If playing music, use headphones or a Bluetooth speaker (device speakers can interfere with the microphone)
β’ Adjust sensitivity slider if needed for your environment
β’ The app works best in environments without constant loud clapping/banging sounds
π AVAILABLE IN 15 LANGUAGES:
English, Portuguese (Brazil), Spanish, French, German, Italian, Russian, Japanese, Korean, Simplified Chinese, Traditional Chinese, Arabic, Hindi, Turkish, Indonesian
π± REQUIREMENTS:
β’ Android 10 or higher
β’ Microphone permission (for clap detection only)
Train harder, train smarter β let ClapTimer handle the clock while you focus on your workout! π₯π₯πͺ
Tired of touching your phone with sweaty gloves? ClapTimer uses AI-powered clap detection to control your round timer completely hands-free. Just clap once to start or pause, clap twice to reset. It's that simple.
π₯ PERFECT FOR:
β’ Boxing training
β’ Brazilian Jiu-Jitsu (BJJ) drilling
β’ Muay Thai rounds
β’ CrossFit intervals & EMOM workouts
β’ Wrestling practice
β’ MMA conditioning
β’ Tabata & HIIT training
β’ Any sport that uses round timers
β±οΈ HOW IT WORKS:
β’ π 1 Clap β Start or Pause the timer
β’ ππ 2 Claps β Reset the current round
β’ No need to touch your phone during training!
π― KEY FEATURES:
β AI-Powered Clap Detection
Uses Google's YAMNet machine learning model running entirely on your device to accurately distinguish claps from speech, music, and background noise. No internet required for detection.
β Fully Configurable Timer
β’ Set round length (minutes or seconds)
β’ Set rest duration
β’ Set total number of rounds
β’ Configure warning countdown (with sound alert before round/rest ends)
β’ Tap any value to type it directly
β Audio Feedback
β’ Boxing bell sound at round start and end
β’ Countdown beep warning before time runs out
β’ Voice announcements: "Round started", "Round paused", "Round over. Rest."
β’ Sound on/off toggle for silent training
β’ Voice language matches your device language
β Works in Background
β’ Keeps listening for claps with screen off
β’ Foreground service with notification
β’ Stop button in notification
β’ Auto-stops after 60 minutes of inactivity to save battery
β Adjustable Sensitivity
β’ Slider to fine-tune clap detection sensitivity
β’ Default set to 90% (highly reactive)
β’ Lower it if you get false positives in noisy environments
β Clean, Dark UI
β’ Large, readable timer display
β’ Auto-sizing text fits any screen
β’ Round/Rest phase clearly indicated with colors
β’ Works in any screen orientation
π PRIVACY FIRST:
β’ NO audio is ever recorded, stored, or sent anywhere
β’ All audio processing happens locally on your device
β’ No account needed, no tracking, no data collection
β’ Microphone only active when the listening service is running
π‘ TIPS FOR BEST RESULTS:
β’ Clap loudly and sharply for best detection
β’ If playing music, use headphones or a Bluetooth speaker (device speakers can interfere with the microphone)
β’ Adjust sensitivity slider if needed for your environment
β’ The app works best in environments without constant loud clapping/banging sounds
π AVAILABLE IN 15 LANGUAGES:
English, Portuguese (Brazil), Spanish, French, German, Italian, Russian, Japanese, Korean, Simplified Chinese, Traditional Chinese, Arabic, Hindi, Turkish, Indonesian
π± REQUIREMENTS:
β’ Android 10 or higher
β’ Microphone permission (for clap detection only)
Train harder, train smarter β let ClapTimer handle the clock while you focus on your workout! π₯π₯πͺ
What’s new
Version 1.4 Β· Updated July 15, 2026
Bug Fixes and Improvements
User reviews
Absolutely love this app! Itβs incredibly practical with a sleek, intuitive interface. It was an absolute lifesaver for my classes
Works as advertised. No more stopping and opening the phone to resume the roll
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