Jam LooperHow to keep your loops in time
Updated 2026-08-09
The single most important rule: your first recording sets the loop length, and every layer after it inherits that length. If the first take drifts, everything drifts with it, and no amount of care on layer three will rescue it. Re-record the first loop rather than fighting the ones on top.
Diagnose it before you fix it
Loops go out of time in four distinct ways, and they need opposite fixes. Work out which one you have before changing anything.
- The loop is the wrong length. Every repeat lands early or late by the same amount. The base loop is the problem.
- One layer sits consistently late. The loop is fine; this is latency, and it is not your playing.
- One layer is sloppy but the rest are fine. That one is you. Re-record it.
- Everything gradually falls apart. Usually the base take had no clear pulse to begin with.
The latency problem, and why it is not your fault
Sound takes time to travel from the microphone, through the phone, and back to your ears. If you are monitoring on headphones you hear the loop slightly after it actually plays, so you play slightly late to match — and your recording lands late.
Jam Looper has two offsets in Settings for exactly this: "Playback latency" and a separate "Bluetooth latency". Set the one that matches how you are listening, once, and it stays. If every layer you record sits consistently behind the beat by the same amount, this is the setting to reach for — not more practice.
Wired beats wireless, by a lot
Bluetooth headphones add tens to hundreds of milliseconds of delay, and the amount varies by device and even by connection. AirPods are convenient and, for layering, the single most common cause of loops that will not sit right.
If your layers are drifting and you are on Bluetooth, try wired headphones before you change anything else. It is the highest-yield thing on this page.
Give the first take a spine
Jam Looper takes the loop length from your first recording — there is no metronome, no tap tempo and no quantise grid correcting you afterwards. That sounds like a liability and is mostly a freedom: you are not locked to a click, so odd bar lengths and rubato phrases work fine.
The trade is that the first take has to mean it. Play something with an obvious pulse — a strummed chord pattern rather than an ambient swell — even if you throw it away later. A clear base loop makes everything after it easy.
Try it without buying anything
Jam Looper turns an iPhone into a loop station — smart loop lengths, four tracks free and eight with Pro. Download it free, or listen to what people have made with it.
Common questions
Why are my loops out of time?
Most often the first recording set an inaccurate loop length, and every later layer inherited it. The other common cause is monitoring latency, where you hear the loop late and play late to match.
Do I need a metronome to loop?
No. Loop length comes from your first take, so a click is optional. Some loopers offer one; Jam Looper does not, which means you are free to record phrases that do not fit a fixed grid.
Why do my layers land late?
Monitoring latency. Set the playback latency offset in the app's settings, and switch from Bluetooth to wired headphones — Bluetooth adds tens to hundreds of milliseconds and is the usual culprit.
Can I fix a loop that is already out of time?
Trim the offending layer, or re-record it. If it is the first loop that is wrong, re-record that — everything else inherits its length, so fixing layers on top will not help.