# Boxing Timer (Training Timer)

> Boxing Timer is an app that can be effective time management of training.

Canonical page: [https://chrome-stats.com/d/com.nulltree.roundbell](https://chrome-stats.com/d/com.nulltree.roundbell)

## Overview

- **ID:** `com.nulltree.roundbell`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** SKYAPPS
- **Category:** HEALTH\_AND\_FITNESS
- **Downloads:** 890,429
- **Rating:** 4.03 / 5 (3,376 ratings)
- **Version:** 5.6.3
- **Last updated:** 2026-07-31
- **First published:** 2012-01-15
- **Publisher country:** KR
- **Size:** 10 MB
- **Data as of:** 2026-09-16
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.nulltree.roundbell)
- **Website:** [https://skyapps.kr/](https://skyapps.kr/)
- **Privacy policy:** [http://skyapps.tistory.com/29](http://skyapps.tistory.com/29)

## Description

**Boxing Timer (Training Timer)** is a versatile app designed to optimize your boxing workouts through effective time management. Users can configure the number of rounds, exercise times, and break durations to tailor training sessions to individual needs.

The timer displays exercise periods in red and breaks in green, providing clear visual cues. To enhance the training experience, the app offers auditory, visual, and vibration notifications between rounds, ensuring you never miss a beat. Easy to use with a default setup of 12 rounds, 3-minute exercises, and 30-second rest intervals, it supports background operation and tablet devices.

Ideal for both boxing enthusiasts and general fitness training, Boxing Timer streamlines your exercise routine, keeping you focused and on track.

## Rankings

- #73,122 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`
- `com.nulltree.roundbell.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

Users praise Boxing Timer for being simple, reliable, and highly configurable, with a clean UI and long-standing usefulness across boxing and other sports. However, multiple reviews note reliability problems like mid-workout resets, and some users report ads that vary by device or reinstall, which can be disruptive. Overall, the app is popular and trusted among seasoned users, but reliability and ad management are common concerns.

### Pros

- Easy to use timer with straightforward controls
- Highly customizable with adjustable rounds and timings
- Distraction-free, clean interface focused on the timer
- Proven over years as a reliable boxing and training timer
- Versatile across sports (boxing, kickboxing, wushu, MMA)

### Cons

- Bugs and reliability issues, including mid-workout resets
- Ads presence and inconsistent ad experience across devices/ reinstall

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.nulltree.roundbell)