# CogniShield: App Blocker — Focus & Screen Time Control

> Focus & Screen Time Control (iPhone/iPad app by Nourredine Mkasri.)

- Source: https://appshunter.io/ios/app/cognishield-app-blocker/id6809868739 (this page in markdown: same URL + `.md`)
- Developer: [Nourredine Mkasri](https://appshunter.io/developer/6786292858)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 8 MB
- Languages: American English, Afar, Akan, Albanian, Amharic, Arabic, Assamese, Azerbaijani, Bangla, Bosnian and 52 more
- Released: 2026-09-11
- Data updated: 2026-10-19

## What is CogniShield?

Fewer automatic opens. More intentional choices.

CogniShield blocks the apps you select and asks you to complete a short challenge before reopening them. Put a moment of thought between an impulse and a tap, whether you are studying, working or making time for something else.

A SHIELD YOU CONTROL
Choose apps and websites through Apple’s secure picker. Turn protection on or off from CogniShield. Completing a challenge temporarily opens the relevant target, while your other protected apps stay shielded.

MAKE THE PAUSE COUNT
Choose from math and logic, geography, the living world, and chemistry. Set the difficulty, the number of correct answers required for each target, and the penalty duration after repeated mistakes.

Written challenges are available in French and English; other app languages use the English question bank when available.

PRIVACY BUILT INTO THE DESIGN
Protection uses Apple’s Screen Time APIs, including Family Controls. App selections use opaque tokens. No account is required, and your challenge counters stay on your device.

SUPPORT HEALTHIER FAMILY HABITS
CogniShield can support conversations about intentional device use. The current app uses individual authorization from the person using the device. Use Apple’s Screen Time parental settings to manage a child’s device: CogniShield does not offer remote parental supervision or guarantee an unbreakable block.

MORE CHOICE WITH PREMIUM
The free version protects up to two apps and includes math/logic and geography. Premium unlocks an expanded app selection, category protection, all challenge themes, and context-aware difficulty. Existing Premium entitlements can be restored, including lifetime purchases.

Choose an annual subscription or a lifetime purchase, subject to availability in your region. Prices and terms are shown in the app. Subscriptions renew automatically unless cancelled in your Apple account settings. Restore Purchases is available in Settings.

Pause, think, and choose what you really want to open.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| CogniShield Premium | $8.99 | per year |


## Is CogniShield safe?

Not enough ratings yet to assess CogniShield.

## Is CogniShield legit?

CogniShield: App Blocker appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for CogniShield is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 1.2.1 — 2026-10-17

• Restored Premium entitlement support for legacy subscriptions, the current annual subscription and lifetime purchases.
• Fixed shield status for selected websites.
• Protected challenge answers against simultaneous taps and stale tasks.
• Improved data consistency between the app and its extensions.
• Fixed respite expiry handling and daily counter rollover.

### 1.2 — 2026-10-04

Improved reliability of protection and temporary access. More robust communication between the app and Screen Time extensions, with protection against stale requests and concurrent state updates. Supports iOS 17 and later.

### 1.1 — 2026-09-22

A new app icon. The App Store listing is now written in 37 more languages, so you read it in your own. The principle is unchanged: to reopen a protected app, you solve a short exercise instead of waiting out a countdown. CogniShield never reads your usage and sends nothing.

### 1.0 — 2026-09-12

No release notes.

## Apps similar to CogniShield

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Atone: Screen Time Limit](https://appshunter.io/ios/app/atone-screen-time-limit/id6794283625) | — | Free | Productivity |
| [DidIt Tracker – Daily Habits](https://appshunter.io/ios/app/didit-tracker-daily-habits/id6755729736) | — | Free | Productivity |
| [Minimalistic Launcher Pro](https://appshunter.io/ios/app/minimalistic-launcher-pro/id6754606068) | — | Free | Productivity |
| [FocusOnly - Pomodoro Timer](https://appshunter.io/ios/app/focusonly-pomodoro-timer/id6757329922) | — | Free | Productivity |
| [Done Day - Daily Habit Tracker](https://appshunter.io/ios/app/done-day-daily-habit-tracker/id6767158354) | — | Free | Productivity |
| [Foki: App Blocker](https://appshunter.io/ios/app/foki-app-blocker/id6758454546) | 5.0 (1) | Free | Productivity |

## More apps by Nourredine Mkasri

- [Salat&Yaqeen: Prayer Times](https://appshunter.io/ios/app/salat-and-yaqeen-prayer-times/id6786292856)
- [99 Names of Allah: Nur Asma](https://appshunter.io/ios/app/99-names-of-allah-nur-asma/id6786328963)
- [Tilawa: Quran Hifz & Khatm](https://appshunter.io/ios/app/tilawa-quran-hifz-and-khatm/id6790609296)
- [Mimora Arab: Arabic Alphabet](https://appshunter.io/ios/app/mimora-arab-arabic-alphabet/id6791309557)
- [Mimora: Pronounce 6 Languages](https://appshunter.io/ios/app/mimora-pronounce-6-languages/id6795572584)
- [Salat&Ihsan · Guided Prayer](https://appshunter.io/ios/app/salat-and-ihsan-guided-prayer/id6796003587)

All apps by Nourredine Mkasri: https://appshunter.io/developer/6786292858

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-19.*