# Math Lock vs BlondeCat Books

The clearest difference is ads: BlondeCat Books at none against Math Lock's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Math Lock sells 2 in-app purchases, starting at $2.99 per month and BlondeCat Books sells 3 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

Math Lock ships an update every 3 weeks, BlondeCat Books monthly. The most recent releases landed on September 26, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Math Lock | BlondeCat Books |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/math-lock/id6748890228/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 118 MB | 35 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SPARKHIVE TECH LTD](https://appshunter.io/developer/1585011311) | [BlondeCat Books LTD](https://appshunter.io/developer/1878721597) |

## What reviewers say

### Math Lock

[App page](https://appshunter.io/ios/app/math-lock/id6748890228)

This app transforms screen time into a learning opportunity for children aged 4-15. It requires solving math problems to unlock the device and offers guided practice, a private tutor, and brain training exercises. Parents can manage screen time while children engage with a fun, curriculum-based math experience.

**Highlights:** Math challenges to unlock device, Curriculum-based math for ages 4-15, Personalized questions by level, Private Tutor with photo solving, Brain training activities, Parental controls

**Features:** macOS Compatibility, Family Sharing, Apple Wallet, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math Lock Premium | $2.99 | per month |
| Math Lock Premium Yearly | $29.99 | per year |


### BlondeCat Books

[App page](https://appshunter.io/ios/app/blondecat-books/id6759457925)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BlondeCat Books Premium (Monthly) | $7.99 | per month |
| BlondeCat Books Premium (Quarterly) | $24.99 | per 3 months |
| BlondeCat Books Premium (Yearly) | $79.99 | per year |


## Frequently asked questions

### Is Math Lock free?

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

### Is BlondeCat Books free?

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

### Do Math Lock or BlondeCat Books have ads?

Math Lock shows ads; BlondeCat Books does not.

### Which is updated more often, Math Lock or BlondeCat Books?

Math Lock ships an update every 3 weeks, and BlondeCat Books monthly. Most recently, Math Lock was updated on September 26, 2026 and BlondeCat Books on October 15, 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.*