# Watchism vs Simple Clock JP

The clearest difference is update cadence: Watchism at every 5 days against Simple Clock JP's every 4 weeks. Simple Clock JP's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Watchism ships an update every 5 days, Simple Clock JP every 4 weeks. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Watchism | Simple Clock JP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/watchism/id6760947199/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 4 weeks |
| Monetization | Free | — |
| Size | 12 MB | 0 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [Aldo Gonzalez](https://appshunter.io/developer/1886972524) | [Kantaro Kobayashi](https://appshunter.io/developer/6797092531) |

## What reviewers say

### Watchism

[App page](https://appshunter.io/ios/app/watchism/id6760947199)

This app provides a precise reference clock using various network time sources and a private digital vault for documenting your watch collection. Track wear, view insights, manage wishlists, and store photos and notes securely on your device.

**Highlights:** Precise reference clock, Multiple time source options, On-device watch collection vault, Wear tracking and insights, Wishlist management, Photo and note storage, Browser integration for online watches

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

**In-app purchases:** none


### Simple Clock JP

[App page](https://appshunter.io/ios/app/simple-clock-jp/id6805928074)

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

**In-app purchases:** none


## Frequently asked questions

### Is Watchism free?

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

### Is Simple Clock JP free?

Simple Clock JP is free to download, with no in-app purchases.

### Do Watchism or Simple Clock JP have ads?

Neither Watchism nor Simple Clock JP shows ads.

### Which is updated more often, Watchism or Simple Clock JP?

Watchism ships an update every 5 days, and Simple Clock JP every 4 weeks. Most recently, Watchism was updated on October 14, 2026 and Simple Clock JP on October 4, 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.*