# Locklify vs Math Shield

The clearest difference is update cadence: Math Shield at every 2 days against Locklify's every 8 days. Locklify's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Locklify sells 2 in-app purchases, starting at $9.99 per year and Math Shield sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Locklify ships an update every 8 days, Math Shield every 2 days. Both last shipped on October 7, 2026.

## The numbers

| Metric | Locklify | Math Shield |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/locklify-study-then-scroll/id6761034879/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 2 days** |
| Monetization | Subscription | — |
| Size | 66 MB | 20 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dat Nguyen Thanh](https://appshunter.io/developer/1679212277) | [Vinoth Ramajeyam](https://appshunter.io/developer/1665205517) |

## What reviewers say

### Locklify

[App page](https://appshunter.io/ios/app/locklify-study-then-scroll/id6761034879)

This app transforms your phone unlocks into quick study sessions. Before accessing distracting apps, you'll answer quizzes, review flashcards, or complete focus challenges to build consistent learning habits.

**Highlights:** Answer short quizzes, Review flashcards, Complete focus challenges, Custom study collections, On-device study history, Flexible challenge types

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium yearly | $9.99 | per year |
| Lifetime | $4.99 | one-time |


### Math Shield

[App page](https://appshunter.io/ios/app/math-shield-focus-and-unlock/id6774190945)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math Shield Pro Monthly | $3.99 | per month |
| Math Shield Pro Yearly | $12.99 | per year |
| Math Shield Pro - Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Locklify free?

Locklify is free to download, with in-app purchases available.

### Is Math Shield free?

Math Shield is free to download, with in-app purchases available.

### Do Locklify or Math Shield have ads?

Neither Locklify nor Math Shield shows ads.

### Which is updated more often, Locklify or Math Shield?

Locklify ships an update every 8 days, and Math Shield every 2 days. Most recently, Locklify was updated on October 7, 2026 and Math Shield on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*