4-7-8 is the pattern most people have heard of: inhale for four, hold for seven, exhale for eight. Several apps exist to do nothing else, and it is by some distance the most searched breathing pattern for sleep.
Long Exhale does not offer it. That is a decision rather than an omission, and since it is the first thing people ask, here is the reasoning.
4-7-8 is a rhythm you perform. Four counts, then seven, then eight — nineteen seconds per breath, about three and a bit breaths a minute, with more than a third of every cycle spent holding.
Two things follow from that. The hold is long enough that it has to be deliberate, and the counts have to be tracked. Both are tasks. They are perfectly good tasks if what you want is a technique to practise, and there are apps that do that job well.
But this app is for the twenty minutes after the light goes off, when the aim is to stop doing things. A pattern you have to keep hold of is a thing to stay awake for. The moment you lose count and start again, the session has become something you can fail at.
Long Exhale runs a continuous ramp. It opens near ten breaths a minute, close enough to your own rhythm to fall in with, and slows over about eight minutes to five and a half. There is no count to keep and no pattern to remember — there is a tone that rises as you breathe in and falls as you breathe out, and you follow it or you drift off, both of which are fine.
The holds are there but they are small: about 8% of the cycle at the top of the inhale, roughly nine tenths of a second at the slowest pace. Enough to shape the breath, not enough to be a thing you brace for. The exhale stretches from one and a half times the inhale to twice it as the pace slows, which is where the app gets its name.
And it fades. Twelve minutes in, the guide starts getting quieter and the cues start spreading apart, until after three more minutes there is nothing. That ending is its own decision.
If 4-7-8 works for you, use an app that does 4-7-8. This one will feel wrong — faster than you expect, with none of the structure you have got used to, and no way to set the counts.
The same goes for box breathing, and for anything else built on a fixed count. Long Exhale has one pace curve, and its settings adjust where that curve ends rather than replacing it with a pattern.
It would take an afternoon, and it would be good for search traffic. The argument against it is that "an app with a slow ramp that fades out" and "an app with a menu of breathing patterns" are two different products, and the second one is already well served.
Adding a mode also changes the first screen. Right now there is a circle and one line of text, and no decision to make at the point in the day when you have the least appetite for decisions. A pattern picker puts a choice exactly there.
So: no 4-7-8, no box breathing, no custom counts. One pace, arriving slowly, and then leaving.