On an iPhone, Screen Time is the umbrella, and under it are different kinds of limits that solve different problems. An app limit gives you a daily allowance of minutes, a schedule such as Downtime blocks apps by the clock, and a session limit counts how often you open an app. Pick the one that matches the habit you want to change, not the one you happened to find first.
Screen Time is the toolbox, not the tool
People often say "I set up Screen Time" as if it were one setting. In fact, Settings › Screen Time is a whole section of iOS. It shows reports of how you use your phone, and it holds several separate controls: Downtime, App Limits, Communication Limits, Always Allowed and Content & Privacy Restrictions, among others.
The reports alone change nothing. Seeing a weekly average can be a useful shock, but a number on a chart doesn't stand between you and an app. The limits do, and each one targets a different part of a habit:
- how much time an app gets in a day,
- when an app can be used at all,
- how often you can open it.
Most frustration with phone limits comes from using a limit built for one of these on a habit that is really about another.
App limits: a daily allowance of minutes
An app limit is a budget. You give an app or a category, for example 45 minutes a day. When the time is used up, the app is blocked until midnight. In iOS, you set it under Settings › Screen Time › App Limits, and you can give different days different amounts.
Where it fits: habits where the problem is the total, and where the time is spread across the day in a way you are fine with. Reading the news, a game you enjoy in moderation, a messaging app that tends to take over your evening.
Where it struggles: it only acts at the end. It doesn't care whether you spend your 45 minutes in one relaxed sitting or in sixty anxious glances. It also arrives at the worst moment, often in the middle of something, and that makes it tempting to extend. The built-in iOS version lets you ask for more time or ignore the limit for the day.
Downtime and schedules: blocking by the clock
A schedule doesn't count anything. It closes apps during a window you choose and opens them again afterwards. In iOS, this is Downtime: during the hours you set, only the apps in Always Allowed (and phone calls) stay available. Pact's schedules work the same way for the apps you pick, with ready-made windows such as Morning Clarity, Deep Focus and Good Night's Rest.
Where it fits: habits tied to a time of day. Scrolling in bed, checking email before you are out of bed, social apps during a work block. When the problem hour is predictable, a schedule removes the decision at exactly the moment you are worst at making it.
Where it struggles: outside the window, it does nothing. A schedule from 10 p.m. to 7 a.m. won't help with the forty minutes you lose over lunch. And like app limits, the built-in iOS version can be bypassed on the device unless someone else controls the passcode.
Session limits: counting opens instead of minutes
A session limit, sometimes called an unlock budget, controls how many times a day you can open an app and how long each visit lasts. iOS doesn't have this type built in. In Pact, you choose a number of unlocks per day, and each time you open the app you decide how long you need before it closes again.
Where it fits: the checking habit. The phone comes out in a queue, during an ad break, between two tasks, and each time the app gets one more chance to hold you. The total might look moderate, yet the habit is constant. Limiting opens makes every visit a small choice: is this worth one of my three?
Where it struggles: for apps you truly need to open often, like messages, maps or a work chat, a low unlock count only creates friction you will resent. Save it for the apps you open by reflex.
Matching the limit to the habit
| The habit | The limit that fits |
|---|---|
| "I check it constantly, a minute at a time" | Session limit (a daily unlock budget) |
| "I lose the whole evening to it" | Schedule for the evening, or an app limit |
| "I scroll in bed" | Schedule (Downtime or Good Night's Rest) |
| "It's fine, there's just too much of it" | App limit |
| "I can't focus while working" | Schedule during work hours |
| "I set limits and then ignore them" | Any of the above, plus a mode without early exits |
If two rows describe you, that is normal. Most people have one app they check too often and one time of day they lose to their phone.
Combining limits without making them fragile
The different types stack well because they cover different gaps. A realistic setup for one troublesome app might look like this:
- A session limit of three opens a day, so checking can't become constant.
- A schedule for the one window where you lose the most time, often late evening.
- An app limit only if the total still creeps up, as a backstop.
Add rules one at a time, a few days apart. If you set up everything at once and it feels harsh, it is hard to know which rule to loosen, and it is tempting to switch off all of them.
In Pact, all three can apply to the same app. Hard Mode removes the option to end a session early, so the rules you chose hold later in the day. You can also require a random code before your restricted apps can be changed, which slows down late-night edits.
What no limit can do on its own
Every limit type is friction, and friction only buys you a moment. It helps to know that moment is coming and to have something to do with it: a book within reach, a walk, a message you meant to send. Limits also move your attention rather than removing it. If you block one feed, keep an eye on whether another one takes its place, and add it too if it does.
FAQ
Is Downtime the same as an app limit?
No. Downtime blocks everything except your Always Allowed apps during set hours, whatever you did earlier in the day. An app limit allows a certain amount of time per day and blocks the app only after you have used it up.
Which limit should I try first?
Look at your Screen Time report and ask whether the problem is how often you pick up the phone, what time of day it happens, or the total. Start with the one limit type that matches, on one app.
Why does my iPhone let me ignore my own limits?
Apple's built-in limits are designed to be flexible for adults, so you can extend them from the limit screen. A Screen Time passcode held by someone else closes that gap. Apps like Pact offer a mode without early unlocks for people who want to hold themselves to their own settings.
Can I use Pact and iOS Screen Time together?
Yes. Pact works through Apple's Screen Time system, so Downtime and your iOS App Limits keep working next to it. Just avoid giving the same app two conflicting rules, which makes it harder to tell which rule is doing the work.
Written by the Pact team with the help of AI. What the article says about Pact comes from the app itself; menu names in other apps can change between versions.