# Locky vs DoomMath

The clearest difference is rating: Locky at 5.0 against DoomMath's 1.0. Locky also leads on monetization model (free with in-app purchases vs subscription) and ratings volume (3 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Locky sells 3 in-app purchases, starting at $2.99 per month and DoomMath sells 2 in-app purchases, starting at $34.99 per year. Whichever you choose, the download price is not the number that matters.

Locky holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Locky ships an update every 3 weeks, DoomMath every 2 weeks. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Locky | DoomMath |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/locky-parental-control/id6636484997/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/doommath/id6753977202/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 29 MB | 12 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Dramavision Technology Co., Ltd.](https://appshunter.io/developer/780543724) | [Pandish ltd](https://appshunter.io/developer/1663638714) |

## What reviewers say

### Locky

[App page](https://appshunter.io/ios/app/locky-parental-control/id6636484997)

Manage your children's device usage with this comprehensive parental control tool. Set app limits, block unwanted purchases and websites, and prevent unauthorized app installations to foster healthier digital habits.

**Highlights:** App locking with restriction screens, Daily app usage time limits, Block in-app purchases, Control app installation and deletion, Website filtering for safe browsing, Easy setup and background operation

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Locky VIP - Monthly | $2.99 | per month |
| Locky VIP - Annual | $9.99 | per year |
| Locky VIP - Lifelong | $29.99 | one-time |


### DoomMath

[App page](https://appshunter.io/ios/app/doommath/id6753977202)

This app requires solving math problems to unlock your phone's applications. It aims to replace unproductive scrolling habits with a more engaging mental exercise. Access to its features is available through a subscription.

**Highlights:** App blocking functionality, Math problem solving for unlocks, Habit replacement tool, Subscription-based access, Yearly discount plan

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DoomMathYearlyDiscount | $34.99 | per year |
| DoomMath | $59.99 | per year |


## Frequently asked questions

### Is Locky free?

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

### Is DoomMath free?

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

### Which has better reviews, Locky or DoomMath?

Locky is rated higher. Locky averages 5.0 out of 5 from 3 ratings, while DoomMath averages 1.0 from 1 ratings.

### Do Locky or DoomMath have ads?

Neither Locky nor DoomMath shows ads.

### Which is updated more often, Locky or DoomMath?

Locky ships an update every 3 weeks, and DoomMath every 2 weeks. Most recently, Locky was updated on November 4, 2026 and DoomMath on November 5, 2026.

---

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