# Mugen Clock vs Reminder Inbox

The clearest difference is price: Mugen Clock at Free against Reminder Inbox's $1.99. Reminder Inbox's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

Mugen Clock is free to download; Reminder Inbox costs $1.99 up front. Mugen Clock sells 1 one-off in-app purchase. Reminder Inbox asks for nothing beyond the download.

Mugen Clock ships an update every 9 days, Reminder Inbox every 2 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Mugen Clock | Reminder Inbox |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.5 (65 ratings)](https://appshunter.io/ios/app/mugen-clock/id1064833509/reviews)** | — |
| Number of ratings | **65** | — |
| Positive reviews | 95.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 116 MB | 3 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Koichiro Kamada](https://appshunter.io/developer/476534292) | [takaaki024](https://appshunter.io/developer/393783638) |

## What reviewers say

### Mugen Clock

[App page](https://appshunter.io/ios/app/mugen-clock/id1064833509)

This app offers a highly readable clock with large, bold numbers that fill the screen. Customize colors, fonts, and layouts, and set personal photos or videos as backgrounds. Includes timer and stopwatch functions for added utility.

**Highlights:** Large, full-screen time display, Customizable colors and fonts, Photo and video backgrounds, Adjustable layout options, Integrated timer and stopwatch, Saved presets for different modes

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $5.99 | one-time |


### Reminder Inbox

[App page](https://appshunter.io/ios/app/reminder-inbox/id6762500014)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mugen Clock free?

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

### Is Reminder Inbox free?

Reminder Inbox costs $1.99, with no in-app purchases.

### Do Mugen Clock or Reminder Inbox have ads?

Mugen Clock shows ads; Reminder Inbox does not.

### Which is updated more often, Mugen Clock or Reminder Inbox?

Mugen Clock ships an update every 9 days, and Reminder Inbox every 2 weeks. Most recently, Mugen Clock was updated on October 29, 2026 and Reminder Inbox on October 25, 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.*