支持 / Support

打开 Alpha / Beta 用户说明书 · Open the user guide

Groove Lab 是 iPhone 与 iPad 上的离线舞蹈节奏练习台，需要 iOS / iPadOS 17 或更高版本。
Groove Lab is an offline rhythm practice app for iPhone and iPad, requiring iOS / iPadOS 17 or later.

联系开发者 / Contact

Henry Zhang · tntzy2000@gmail.com

请附设备型号、系统与 App 版本、舞种、BPM、音频输出设备及复现步骤。
Include your device, OS and app version, arrangement, BPM, audio output, and steps to reproduce.

速度与乐器 / Tempo and instruments

点击乐器名称开关该轨；相邻滑条图标调节音量。Slow / Natural 只切换速度，滑条可以逐 BPM 调节，速度不匹配时两项均不选。解说降音量位于主画面。
Tap an instrument name to toggle it, and its adjacent slider icon to change volume. Slow / Natural changes tempo only. Other BPM values leave both shortcuts unselected. The explain-volume switch is on the main screen.

语言与倒数 / Language and count-in

点击右上角设置。可选择中文或 English；预备为 0–6 拍或秒，默认四个音乐拍，0 表示立即开始。
Open Settings at the top right. Select Chinese or English and a count-in of 0–6 musical beats or seconds. The default is four beats; zero starts immediately.

为什么停止播放？ / Why did playback stop?

前台练习模式下，锁屏、切后台或音频中断会暂停。返回后点击继续。调节速度也会暂停并保留音乐位置。
Locking, backgrounding, or audio interruptions pause practice. Tap Continue after returning. Changing tempo also pauses playback while preserving musical position.

离线与保存 / Offline use and storage

声音资源随 App 提供；练习不需要联网。设置保存在本机，没有帐号或云同步。早期测试版本的笔记保留在本机；当前主屏没有笔记入口。教学与来源外链交给系统浏览器，需要网络。
Sounds are bundled with the app. Settings remain on your device, with no account or cloud sync. Notes from earlier test versions remain stored locally; the current main screen has no notes entry. Reference links open in the system browser and require connectivity.

练习编配 / Practice arrangements

这些是便于听拍和跟练的简化编配，不是完整歌曲，也不代表每个舞种的全部变化。
These simplified arrangements support timing practice; they are not full songs or an exhaustive representation of each style.