Nobody can tell you whether a method suits you. Learning advice is unusually personal — approaches that transform one person do nothing for the next, and reviews won't resolve it.
Which makes the sensible question not "is this good?" but "what's the cheapest way to find out?"
Set the Test Up Properly
Most people evaluate a method in ways that guarantee an unclear answer.
They try it for a few days, which isn't long enough for anything to become automatic. They try it during a busy fortnight, so the test measures their schedule rather than the method. Or they change three things at once and can't tell what did what.
A clean test needs one variable, a realistic window, and a specific thing you're watching for.
What to Look For, Specifically
For production work the signal is unusually clear, and it arrives early.
Within a few days of learning one song, is a phrase turning up in your head uninvited? Not one you're recalling deliberately — one that arrives on its own while you're doing something else.
That's the mechanism reporting. If it's happening, the transfer is under way and more of the same produces more of it. If nothing at all is looping after a week of ordinary listening, this format isn't engaging your reward system and you should stop.
You'll know inside a fortnight, which is a considerably faster read than most methods offer.
The Cost of Finding Out
Worth stating flatly. No time carved out of your week, because the listening happens in hours you already spend. Nothing else cancelled or paused. And a small amount of money over a short window.
If it turns out not to suit you, your existing routine is exactly where you left it.
What a Fair Test Isn't
It isn't three days. It isn't listening once and expecting to remember. And it isn't judging by how it feels — the feeling is that you aren't doing anything, which is the entire point and is easily mistaken for it not working.
Judge it on whether phrases surface on their own. That's observable, and it isn't a matter of opinion.
About Outputly
Outputly gives a clear read early. If songs are looping and phrases are surfacing uninvited within a fortnight, it's working. If nothing loops, it isn't for you — and you'll know quickly.