# カスタムアラーム vs JustNotify

The clearest difference is in-app purchases: JustNotify at none against カスタムアラーム's 1. JustNotify also leads on update cadence (every 4 days vs every 4 weeks). カスタムアラーム's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. カスタムアラーム sells 1 one-off in-app purchase. JustNotify asks for nothing beyond the download.

カスタムアラーム ships an update every 4 weeks, JustNotify every 4 days. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | カスタムアラーム | JustNotify |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 4 weeks | **Every 4 days** |
| Size | 39 MB | 46 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TAKUTO YOSHINO](https://appshunter.io/developer/1877756143) | [Now Topic LLC](https://appshunter.io/developer/1738349180) |

## What reviewers say

### カスタムアラーム

[App page](https://appshunter.io/ios/app/id6759268514)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan | $2.99 | one-time |


### JustNotify

[App page](https://appshunter.io/ios/app/justnotify-notification-app/id6760930721)

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

**In-app purchases:** none


## Frequently asked questions

### Is カスタムアラーム free?

カスタムアラーム is free to download, with in-app purchases available.

### Is JustNotify free?

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

### Do カスタムアラーム or JustNotify have ads?

JustNotify shows ads; カスタムアラーム does not.

### Which is updated more often, カスタムアラーム or JustNotify?

カスタムアラーム ships an update every 4 weeks, and JustNotify every 4 days. Most recently, カスタムアラーム was updated on October 5, 2026 and JustNotify on October 2, 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.*