# CalcGate | App Lock with Math vs Focus Lock

The clearest difference is in-app purchases: CalcGate | App Lock with Math at none against Focus Lock's 2. CalcGate | App Lock with Math also leads on update cadence (every 3 weeks vs every 6 weeks). Focus Lock's advantage is iOS requirement (17.6 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. Focus Lock sells 2 in-app purchases, starting at $2.99 per 7 days. CalcGate | App Lock with Math asks for nothing beyond the download.

CalcGate | App Lock with Math ships an update every 3 weeks, Focus Lock every 6 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | CalcGate | App Lock with Math | Focus Lock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/focus-lock-charge-app-blocker/id6763927407/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | — | Freemium |
| Size | 4 MB | 14 MB |
| Requires iOS | 26.2 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HIDEYUKI INAGAKI](https://appshunter.io/developer/1819355611) | [Efat Md. Minhaz Siddiquee](https://appshunter.io/developer/1824206570) |

## What reviewers say

### CalcGate | App Lock with Math

[App page](https://appshunter.io/ios/app/calcgate-app-lock-with-math/id6762510886)

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

**In-app purchases:** none


### Focus Lock

[App page](https://appshunter.io/ios/app/focus-lock-charge-app-blocker/id6763927407)

This app helps you break phone addiction by automatically locking distracting apps when your phone is charging or the battery is low. To regain access, you must solve a math or logic puzzle, creating a small barrier to prevent mindless scrolling.

**Highlights:** Auto-lock apps when charging, Auto-lock apps on low battery, Manual focus sessions, Math and logic unlock challenges, Strict Mode with no surrender, Smart usage insights, Focus streak tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Annually | $19.99 | per year |


## Frequently asked questions

### Is CalcGate | App Lock with Math free?

CalcGate | App Lock with Math is free to download, with no in-app purchases.

### Is Focus Lock free?

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

### Do CalcGate | App Lock with Math or Focus Lock have ads?

Neither CalcGate | App Lock with Math nor Focus Lock shows ads.

### Which is updated more often, CalcGate | App Lock with Math or Focus Lock?

CalcGate | App Lock with Math ships an update every 3 weeks, and Focus Lock every 6 weeks. Most recently, CalcGate | App Lock with Math was updated on November 5, 2026 and Focus Lock on October 31, 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.*