圖標

Rubber Ring

A looper for practicing song parts.
新版本 0.10
• The click can keep going through the whole loop, not only during the count-in — with its own volume and a low, medium or high pitch, under Options → Click.
• The count-in now lands exactly on the beat the audio comes in on, on any device: it plays on the same stream as the track instead of a separate one.
• The chord lane can name bass notes instead of chords — the lowest note rather than the harmony over it, which is what a bassist plays when the chord sits on an inversion. Options → Chords.
Rubber Ring is a tool for practicing song parts. Pick an audio file, mark a start/stop region on its waveform, and play it back in a seamless, gapless loop. It auto-detects tempo and beats to snap the loop markers to a beat grid, with full manual override.

Early-stage release — expect rough edges. Feedback and bug reports welcome via Issues.

Features:

* Import-and-own library — picked files are copied into app-private storage, so loops never break when the original is moved, renamed, or deleted.
* Waveform region selection with gapless looping — drag start/stop handles to mark a section; the loop boundary wraps with zero audible gap or click.
* Automatic, hand-editable beat grid — a dependency-free estimator finds BPM and a downbeat, and handles snap to the beat grid.
* Chord detection with a hand-editable chord lane — chords are labelled over the waveform; tap to relabel, split or merge. Detection is tuned to the author's own material, so the lane is there to correct by hand, and can be turned off.
* Per-track audio normalization — boost a track that was mixed too quietly, by peak or by loudness; your original file is never altered.
* Adjustable playback speed — slow a tricky passage down (or speed it up) without changing pitch.
* Count-in — long-press Play to start after a metronome counts you in at the track's tempo.
* Saved loops and practice arrangements — capture named sections per track and chain them into a sequence, each repeated as many times as you set.
* Backup & restore — export your whole library to a file and restore it after a reinstall.
* English and German, with optional German note names (H and B) for chords.
* Opens audio shared from other apps.

No ads, no trackers, no network access.

版本

雖然在下方可選擇下載 APK 檔案,但要留意這樣的安裝方式將不會收到更新通知,是一種較不安全的下載方法。建議您先安裝 F-Droid 用戶端使用。

下載 F-Droid
  • 版本 0.10 (11) 建議 於 2026 年 8 月 11 日新增

    arm64-v8a armeabi-v7a x86 x86_64

    此版本需要 Android 8.0 或更高的版本。

    此套件包由原開發者建置和簽署,並保證與此原始碼 Tarball 保持一致。

    權限
    • de.singular.looper.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    下載 APK 13 MiB PGP 簽章 | 建置紀錄

  • 新版本 0.9
    • A track can now hold ten saved loops instead of four, and Save keeps its place beside Arrange however many you have.
    • Drag the loop chips to put them in the order you practise them.
    • Recalling a loop scrolls it into view, and loop names stay unique within a track.
    • New: a short "what's new" note on the first launch after an update. Settings → About reopens it.
    • Snap, Auto and Tap now sit together as one group; track options move to their own button.
  • 版本 0.9 (10) - 於 2026 年 8 月 5 日新增

    arm64-v8a armeabi-v7a x86 x86_64

    此版本需要 Android 8.0 或更高的版本。

    此套件包由原開發者建置和簽署,並保證與此原始碼 Tarball 保持一致。

    權限
    • de.singular.looper.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    下載 APK 13 MiB PGP 簽章 | 建置紀錄

  • 新版本 0.8
    • Rubber Ring now speaks German, with a language picker under Settings → System → General.
    • Chords can use German note names — H and B instead of B and B flat (Settings → Playback).
    • Settings are split into Playback, System and About tabs.
    • New Support entry in the menu: three ways to help the app along, all of them links out.
    • Send a recording straight to Rubber Ring from another app, via the share sheet or "Open with".
    • The licence is now stated in full under About.
  • 版本 0.8 (9) - 於 2026 年 8 月 3 日新增

    arm64-v8a armeabi-v7a x86 x86_64

    此版本需要 Android 8.0 或更高的版本。

    此套件包由原開發者建置和簽署,並保證與此原始碼 Tarball 保持一致。

    權限
    • de.singular.looper.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    下載 APK 13 MiB PGP 簽章 | 建置紀錄