# CertLock: Security+ Exam Prep — App Blocker: Screen Time Limit

> App Blocker: Screen Time Limit (iPhone/iPad app by Tianna Johnson.)

- Source: https://appshunter.io/ios/app/certlock-security-plus-exam-prep/id6802654791 (this page in markdown: same URL + `.md`)
- Developer: [Tianna Johnson](https://appshunter.io/developer/1869914486)
- Category: Productivity, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 39 MB
- Languages: American English
- Released: 2026-09-03
- Data updated: 2026-09-13
- User reviews in markdown: https://appshunter.io/ios/app/certlock-security-plus-exam-prep/id6802654791/reviews.md

## What is CertLock?

Turn every impulse to scroll into a study rep.

CertLock is the app blocker built for people preparing for the CompTIA Security+ (SY0-701) exam. Choose the distracting apps that steal your attention. When you reach for one, CertLock puts study first: answer three practice questions correctly to earn a timed unlock.

SCROLL LESS. STUDY MORE.

A normal app blocker asks you to wait, breathe, or tap through a warning. CertLock turns that same impulse into active recall. Wrong answer? Read a clear explanation and try a replacement question. Every attempt becomes exam practice.

HOW THE APP BLOCKER WORKS

• Choose which apps to guard with Apple’s Screen Time controls
• Answer three questions correctly before access is restored
• Set a 5, 10, 15, or 30-minute unlock window
• Practice across all five SY0-701 exam domains
• Review explanations and see your accuracy by domain
• Build a daily streak and review session history

EARN QUIET HOURS

Want a longer break from the app blocker? Complete a focused 15-question Study Session to earn three hours of Quiet Hours. One session per day keeps the reward meaningful.

BUILT FOR REAL PROGRESS

CertLock includes 369 original practice questions stored offline. Free Practice lets you study by domain without triggering an unlock, while mastery bars show where you need more work.

PRIVATE BY DESIGN

Your quiz history, streak, settings, and blocked-app selections stay on your device. No account, ads, or analytics are required for the core experience.

CERTLOCK PREMIUM

An active subscription is required to arm app blocking. Plans renew automatically unless canceled at least 24 hours before the end of the current billing period. Manage or cancel in your Apple ID subscription settings.

CertLock is an independent study aid. CompTIA and Security+ are trademarks of CompTIA, Inc. CertLock is not affiliated with, endorsed by, or sponsored by CompTIA.

Privacy Policy: https://www.certlock.app/privacy
Terms of Use: https://www.certlock.app/terms

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| CertLock Premium (Monthly) | $4.99 | per month |
| CertLock Premium (Yearly) | $29.99 | per year |



## Version history (last 2 releases)

### 1.1 — 2026-09-07

• Choose how many questions the unlock toll asks — 3, 5, 7, or 10 (Settings → Questions per unlock)
• Clearer unlock confirmation screen
• Small bug fixes

### 1.0 — 2026-09-03

No release notes.

## More apps by Tianna Johnson

- [Travel Dock: Trip Budget](https://appshunter.io/ios/app/travel-dock-trip-budget/id6757954916)
- [TempoKick](https://appshunter.io/ios/app/tempokick/id6760954210)

All apps by Tianna Johnson: https://appshunter.io/developer/1869914486

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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 2026-09-13.*