# Just Timer vs AppGuard スマホ制限ロック

The clearest difference is in-app purchases: Just Timer at none against AppGuard スマホ制限ロック's 3. Just Timer also leads on update cadence (daily vs every 9 days). AppGuard スマホ制限ロック's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. AppGuard スマホ制限ロック sells 3 in-app purchases, starting at $1.99 per month. Just Timer asks for nothing beyond the download.

Just Timer ships an update daily, AppGuard スマホ制限ロック every 9 days. The most recent releases landed on September 28, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Just Timer | AppGuard スマホ制限ロック |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 9 days |
| Size | 5 MB | 7 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [BYNET](https://appshunter.io/developer/1811735131) | [Motoki Seki](https://appshunter.io/developer/1895850085) |

## What reviewers say

### Just Timer

[App page](https://appshunter.io/ios/app/just-timer-fast/id6756530301)

**Features:** macOS Compatibility

**In-app purchases:** none


### AppGuard スマホ制限ロック

[App page](https://appshunter.io/ios/app/appguard/id6785254908)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月額プラン | $1.99 | per month |
| 年額プラン | $19.99 | per year |
| Premium買切りプラン | $29.99 | one-time |


## Frequently asked questions

### Is Just Timer free?

Just Timer is free to download, with no in-app purchases.

### Is AppGuard スマホ制限ロック free?

AppGuard スマホ制限ロック is free to download, with in-app purchases available.

### Do Just Timer or AppGuard スマホ制限ロック have ads?

Just Timer shows ads; AppGuard スマホ制限ロック does not.

### Which is updated more often, Just Timer or AppGuard スマホ制限ロック?

Just Timer ships an update daily, and AppGuard スマホ制限ロック every 9 days. Most recently, Just Timer was updated on September 28, 2026 and AppGuard スマホ制限ロック on October 3, 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.*