If you only protect one window on your phone, protect the hour before you sleep. The sleep research points there, and so does Munen's own engine: minutes in your flagged apps between 22:00 and 07:00 carry 32 percent of the daily zone score, more than any other signal, and 30 minutes of them subtracts a zone outright.
That makes the evening the only window that pays twice. You sleep better tonight, and your phone is easier to live with tomorrow.
What the sleep research says
The National Sleep Foundation's 2024 consensus statement on screen use and sleep health concluded that screen use before bed is associated with worse sleep, and recommends avoiding screens for at least an hour before going to bed.
Researchers describe three mechanisms, and they are worth separating because only two of them are things an app can act on.
| Mechanism | What it is | What helps |
|---|---|---|
| Sleep displacement | The time simply replaces sleep | Not opening the app |
| Psychophysiological arousal | The content itself wakes you up | Not opening the app |
| Melatonin suppression | Light exposure delays sleep onset | Night shift, dimming, filters |
Most phone features aimed at bedtime address the third one. A warm screen is genuinely useful and it does nothing about the first two, which are the ones that cost you the hour. A pause before the app opens is the only intervention that touches those.
What Munen already does at night, without being configured
Nothing is blocked at night by default. The night window is a measurement window.
| Item | Value |
|---|---|
| Night window | 22:00 to 07:00 local |
| Apps measured | Only the ones you flagged |
| Weight in the zone score | 32 percent |
| Severity floor | 5 minutes |
| Severity ceiling | 30 minutes |
| Hard rule | 30 minutes or more subtracts one zone |
So the consequence of a late scroll is not a locked screen at midnight. It is a longer pause and a shorter access window when you pick up the phone tomorrow. The full mechanics are in what late night scrolling costs you the next morning.
Five minutes registers as nothing. Checking one message before sleep is not what this is about.
Spending your one free schedule on the evening
The free plan includes one recurring focus schedule. It repeats on the weekdays you pick, and during it your flagged apps are closed rather than paused.
The evening is usually the best place to spend it, for three reasons. It is the window that repeats most reliably. It is the one you lose most often, because the day's decision budget is gone. And it is the only window whose effect compounds into the next day through the night signal.
A setup that works:
- Start the schedule 60 to 90 minutes before your actual target sleep time, not before your intended one.
- Set it on weeknights first. Weekends have a different failure pattern and adding them early is how a schedule gets turned off entirely.
- Leave your non-flagged apps alone. Reading, music and messages stay available, because the goal is a phone worth putting down, not a brick.
- Put your alternative somewhere reachable. The pause screen asks you for one, and the evening is when the answer needs to already be within arm's length.
If you cannot hold a 90 minute schedule, cut it to 45 rather than abandoning it. A schedule that survives is worth more than a schedule that is correct.
Why Munen does not just block at night by default
A night block set by an app you installed is a restriction you did not choose in the moment, applied at the hour you have the least patience. That is the profile of a setting people turn off once and never turn back on.
So the default is measurement and a pause, and the block is something you build yourself, for the window you named. If you want a genuine wall on your hardest days, the hard day contract has a firm mode that closes flagged apps in zone 1, and it is always opt-in.
Common questions
Does Munen track my sleep? No. It has no sleep tracking, no bed sensor and no wake detection. It only counts minutes in your flagged apps inside a fixed clock window.
Can I change the night window? Not currently. It is fixed at 22:00 to 07:00. If you work nights, that window will read your normal evening as night use and Munen is a poor fit for you today.
Does a podcast or an ebook at night count? Only if you flagged that app as distracting. The engine never reads apps you did not choose.
What if I wake up at 3 am and cannot sleep? Those minutes count like any other night minutes. There is no special case, and there is no punishment beyond a zone that may be one step lower tomorrow, with a longer pause and a shorter window.
Is one schedule really enough? For the evening case, yes, since it is one window repeated across weekdays. Unlimited schedules are a Premium feature, but the engine that actually does the daily work is free.
The short version
The hour before bed is the highest leverage window on your phone, and the only one whose effect carries into tomorrow through the zone. Munen measures it at 32 percent weight, blocks nothing there by default, and gives you one free recurring schedule you can point at it. For the underlying mechanic against apps built on scheduled blocks, see Munen vs Opal.