Hear every loop in your track's tempo and key.

Hear it in your project before you drop it

Loops are stretched to your tempo and moved to your key as you browse, with a spectral stretcher that keeps drums tight and chords clean. Copies come out a whole number of beats long and loop without a click, so they sit on your DAW's grid.

With Pro, what you drag in arrives exactly as you heard it: no warping or re-pitching on the timeline.

Every pack in one library, sorted by what it is

Add your sample folders and Hertz Sync sorts them into Drums, Bass, Synth, Keys, Guitar, Strings, Brass, Vocals and FX from the names packs already use. Loops that mix instruments are grouped by style: lo-fi, R&B, trap, house and more. Nothing on disk moves.

Search across everything, then audition with the arrow keys: each sound plays as you land on it.

Gigabytes of duplicates and files that won't open

Packs overlap and downloads repeat. The first scan shows how many byte-identical copies you have, how much space they take, and which files are damaged or unreadable, across every folder you add.

Pick which copy to keep (it suggests one); the extras go to the Recycle Bin (Windows) or the Trash (Mac), so you can always get them back.

Real folders, without breaking old projects

Copy your whole library into one new folder with a subfolder per category. Your originals stay where they are, so older DAW projects still open. Every copy is checked against its original, and one click undoes it all.

Your originals stay exactly as they are

Pick a recipe or build your own: rename by tempo and key, cut silence off one-shots, smooth every edge so nothing clicks, even out loudness, match everything to your project's tempo and key, one sample rate, WAV or FLAC. Preview every new name and listen before and after first.

The results go to a new folder next to your library, with the same folders inside, so your DAW projects keep finding the originals. Undo sends the new folder to the Recycle Bin. Changing files where they are is there too, only when you turn it on, with a warning and a full Undo.

Cut any loop into sounds of your own

Drum loops are cut on every hit and each slice is named by ear: Kick, Snare, Hat. Melodic loops are cut on the beat. Lock the slices you like, move the sensitivity, and the rest re-cut around them.

The slices become files in your library, ready for the kit builder. Seeing the cuts and listening are free; writing the files is Pro.

A drum kit from every pack you own

Pick a kick and "Fill the kit" finds the closest snare, clap, hats, perc and cymbal in your whole library, by how they sound. Swap any slot, keep as many kits as you like, and export each one as a numbered folder for your sampler or drum machine.

The packs you bought, finally heard

Every day Hertz Sync digs out sounds you own but have never played, a different category or style on every card. Or have it draw a song's worth of parts that play together: one key, one tempo, drums, bass, chords and a lead.