{"package_name":"de.singular.looper","name":"Rubber Ring","summary":"A looper for practicing song parts.","category":"Local Media Player","icon_url":"/api/icon/de.singular.looper","latest_version_code":12,"latest_version_name":"0.11","apk_url":"/api/apk/de.singular.looper","apk_size":13794000,"apk_sha256":"1106adf95e331c4393dd05215f8c683a638fe56ee46e45f567d162ce21eb7217","source_kind":"fdroid-repo","repo_slug":"fdroid-main","last_updated":1788058818,"release_timestamp":1788007842,"description":"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.\n\nEarly-stage release — expect rough edges. Feedback and bug reports welcome via Issues.\n\nFeatures:\n\n* Import-and-own library — picked files are copied into app-private storage, so loops never break when the original is moved, renamed, or deleted.\n* Waveform region selection with gapless looping — drag start/stop handles to mark a section; the loop boundary wraps with zero audible gap or click.\n* Automatic, hand-editable beat grid — a dependency-free estimator finds BPM and a downbeat, and handles snap to the beat grid.\n* 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.\n* Per-track audio normalization — boost a track that was mixed too quietly, by peak or by loudness; your original file is never altered.\n* Adjustable playback speed — slow a tricky passage down (or speed it up) without changing pitch.\n* Count-in — long-press Play to start after a metronome counts you in at the track's tempo.\n* Saved loops and practice arrangements — capture named sections per track and chain them into a sequence, each repeated as many times as you set.\n* Backup & restore — export your whole library to a file and restore it after a reinstall.\n* English and German, with optional German note names (H and B) for chords.\n* Opens audio shared from other apps.\n\nNo ads, no trackers, no network access.\n","categories":["Local Media Player","Multimedia","Music Practice Tool"]}