# Guidosimplex vs Digital Japanese Clock

The clearest difference is in-app purchases: Guidosimplex at none against Digital Japanese Clock's 1. Guidosimplex also leads on ads (none vs shown) and iOS requirement (11.0 vs 14.0). Digital Japanese Clock's advantage is update cadence (every 6 weeks vs every 28 months). On price and device support there is nothing between them.

Both are free to download. Digital Japanese Clock sells 1 one-off in-app purchase. Guidosimplex asks for nothing beyond the download.

Guidosimplex ships an update every 28 months, Digital Japanese Clock every 6 weeks. The most recent releases landed on October 4, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Guidosimplex | Digital Japanese Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/digital-japanese-clock/id1665402709/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 28 months | **Every 6 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 6 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Changzhou Xinder-Tech Electronics Co., Ltd](https://appshunter.io/developer/1402533068) | [Mihoko Araki](https://appshunter.io/developer/1476136915) |

## What reviewers say

### Guidosimplex

[App page](https://appshunter.io/ios/app/guidosimplex/id1549612487)

**In-app purchases:** none


### Digital Japanese Clock

[App page](https://appshunter.io/ios/app/digital-japanese-clock/id1665402709)

Experience the Edo period's unique timekeeping with this digital clock. It simulates the indefinite time method, dividing days and nights into variable lengths. Customize sounds, displays, and backgrounds for an immersive historical experience.

**Highlights:** Indefinite time method simulation, Customizable bell sounds (drums, cannons, cuckoo), Multiple display options (zodiac, numerals, emojis), Adjustable background color and font, Optional modern sub-clock display, Settings for time methods and display elements

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $1.99 | one-time |


## Frequently asked questions

### Is Guidosimplex free?

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

### Is Digital Japanese Clock free?

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

### Do Guidosimplex or Digital Japanese Clock have ads?

Digital Japanese Clock shows ads; Guidosimplex does not.

### Which is updated more often, Guidosimplex or Digital Japanese Clock?

Guidosimplex ships an update every 28 months, and Digital Japanese Clock every 6 weeks. Most recently, Guidosimplex was updated on October 4, 2026 and Digital Japanese Clock on October 17, 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.*