TuneSlider vs Music Pulse

TuneSlider changes a song's speed without changing its pitch, and its pitch without changing its speed — down to the cent. Built for practicing, transcribing, and slowing down the hard parts. No subscription, no account, no ads. THREE DIALS, ONE JOB EACH Speed, pitch, and fine tune are always independent, and always color-coded the same way everywhere in the app, so you never lose track of which one you're touching. • Speed — 25%–200% of the original tempo in 1% steps. Pure time-stretch: the pitch never drifts, even at half speed. • Pitch — ±6 semitones, a full octave of transposition, in whole-step jumps, without ever touching the tempo. • Fine tune — ±50 cents around whichever semitone you've picked, enough resolution to correct a recording that's just a hair off. BUILT FOR REPEAT PRACTICE Real library features, not just a single-file player. • Per-song memory — speed, pitch, and fine-tune are saved per song and restored automatically the next time you open it, across app relaunches. • Favorites & playlists — heart a song to favorite it, or build named playlists: reorder, rename, and organize the pieces you're actively working on. • Play All & full transport — queue an entire playlist and auto-advance through it, with back / rewind 15s / play-pause / forward 15s / next, on-screen and from the lock screen. • Keeps playing, locked or backgrounded — full lock-screen and Control Center transport controls, and playback survives the screen locking or another app opening. SEE THE MUSIC, NOT JUST HEAR IT Three full-screen visualizers, each driven by the actual live, post-speed/pitch audio, not a canned animation: • Waveform — raw time-domain trace • Spectrum — FFT frequency bars • Pulse — radial burst, by loudness NOTHING TO SIGN IN TO. NOTHING TO SEND ANYWHERE. TuneSlider has no account, no analytics, and no ads. Every song, setting, playlist, and favorite lives only in local storage on your device — the developer never sees any of it.

Give sound a visual form with Music Pulse. Place your phone or tablet near the music, enable the microphone, and explore VU meters, spectra and glowing scenes that react to sound. EXPLORE THREE COLLECTIONS Browse square previews in Initial, Halloween and Christmas packs. Discover 18 initial designs, five Halloween scenes and five Christmas visualizers with snow, glowing lights and warm fireplace effects. MAKE IT YOURS Adjust sensitivity, choose colors in supported themes, and add your own text. Double-tap to hide the controls and enjoy the visuals. ACCESS AND ADS Voluntarily watch a rewarded video to enter a pack. Use and switch its themes without another video until you leave the pack. Returning to the pack selector ends access; entering any pack again requires another rewarded video. Banners appear only in pack and theme selectors. No ads appear during visualization. No account or in-app purchases are required. AUDIO PROCESSED LOCALLY Microphone audio is processed on your device. It is not saved as a recording or uploaded to our servers. Advertising may process data as described in the privacy policy. Music Pulse uses the microphone. It is not a music player and does not directly capture internal audio from other apps. Its meters are visual effects, not calibrated measuring instruments. Some themes contain flashing lights and rapid changes in brightness.