How Cortex app works: a pause, not a block
Cortex app doesn’t block apps. When you open one you’ve chosen, it runs a short micro-intervention — a breath, a quick math problem, a trivia question, or a look at your own usage numbers — asks why you’re opening it (work, leisure, or autopilot), and lets you choose to continue or do something else. Every time you choose not to go in, your daily Cortex Score goes up by one; every time you go in, it drops by two.
1. You tap a monitored app
Cortex app uses Apple’s Screen Time framework (the same one behind App Limits) to notice the moment you open an app you picked — Instagram, TikTok, YouTube, X, Reddit, WhatsApp, LinkedIn, or anything else. Apple only hands over opaque tokens, so Cortex app never learns which apps you use.
2. The shield appears
Instead of the app, you see a system shield with two choices: open anyway, or take the pause. Choosing the pause hands you to Cortex app.
3. A micro-intervention
Five seconds of something that needs your prefrontal cortex: a guided breath, a two-digit sum you type, a three-option trivia question that reveals a fact, or a question about your own behaviour (“how many times have you opened Instagram today?” — then the real number). You pick which styles rotate; the app never repeats the same one twice in a row. Cortex Pro lets you set the pause length.
4. It asks why
“Why are you opening this?” — work, leisure, or autopilot. Most impulse opens are the third one, and naming it is what breaks the loop. Nothing is judged; “leisure, on purpose” is a perfectly good answer.
5. You decide
“Do something else” takes you to the home screen and adds a point. “Continue to Instagram” opens the app — always allowed, no lockout — and costs two. The mascot reacts, the streak updates, and you move on.
The intervention styles
Chosen in onboarding, changeable in Settings. Deselect a style and it leaves the rotation entirely.
| Style | What happens |
|---|---|
| Breathing | One guided inhale and exhale with haptics. The baseline, and the right tool for the first open of the day — it trains you to be less impulsive. |
| Math | A typed arithmetic problem. Harder on the fifth open than on the first. Typing engages more of your prefrontal cortex than tapping OK ever can. |
| Trivia | One general-knowledge question with three options, then the fact behind it. Deliberately unscored: the friction is the question, the fact is the payoff. |
| Mirror | “How many times have you opened this today?” or “When did you last open it?” — then the real number. Being wrong about yourself is the lesson. |
| Time box | “How long do you want to stay?” Your answer arms a reminder and a re-intervention when time is up. |
The Cortex Score
A daily number from 0 to 100 that starts at 100 every midnight. Choosing “do something else” after an intervention adds one point; continuing into the app costs two. It resets every night, so one bad afternoon never ruins a week — and the weekly report shows the trend, not the noise.
Score = 100 + (resisted × 1) − (continued × 2), clamped to 0–100, reset at midnight
- Streaks count consecutive good days and unlock milestones
- Weekly report: hours and days recovered, best hour, worst app
- Shareable score cards
Shortcuts and automations
Cortex app ships App Intents, so it shows up in the Shortcuts app. During setup it installs a personal automation for you (“When Instagram is opened → run Cortex”); power users can chain it with their own — a Focus mode, a timer, a journal prompt. If you want to see the free, no-app version of the idea, read the Pause Point page. Pause Point for iPhone →
Why a pause instead of a block
Blockers work until you tap “Ignore Limit”, and then the workaround becomes the habit. A pause has nothing to defeat: you already got what you wanted (the app is one tap away), you just had to decide first. That decision, repeated, is the training. It is the same reasoning behind Android 17’s Pause Point — Cortex app is that idea on iPhone, with a brain workout in the gap.
Questions about how it works
Does it work with every app?
Any app the Screen Time framework can see, which is essentially every app on your iPhone. Websites in Safari are not covered in this version.
Can I skip the pause?
Yes — the shield always offers “open anyway”. Skipping is recorded so your weekly report is honest, but nothing is ever locked.
Does trivia give points?
No, on purpose. If answering a question earned points, opening a blocked app would become a game. The question is the friction; the fact is the reward.
Does Cortex app run in the background and drain the battery?
No. Apple’s framework does the watching at the system level; Cortex app only wakes when you open a monitored app.
What does the free version include?
One monitored app with the 5-second pause, every intervention style, the Cortex Score and streaks. Cortex Pro adds unlimited apps, custom pause length, schedules, usage limits and the weekly report.
5.0 ★ on the App Store · iOS 17+