# 倍速時計 vs Rin

The clearest difference is in-app purchases: Rin at none against 倍速時計's 1. Rin also leads on update cadence (every 3 days vs every 3 weeks) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. 倍速時計 sells 1 one-off in-app purchase. Rin asks for nothing beyond the download.

倍速時計 ships an update every 3 weeks, Rin every 3 days. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 倍速時計 | Rin |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | — | Free |
| Size | 2 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Maho Ishikawa](https://appshunter.io/developer/6793993796) | [Yuka Kubo](https://appshunter.io/developer/1857610643) |

## What reviewers say

### 倍速時計

[App page](https://appshunter.io/ios/app/id6793993794)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro（買い切り） | $1.99 | one-time |


### Rin

[App page](https://appshunter.io/ios/app/rin/id6800327709)

This app offers a simple, intuitive focus timer with a circular ring display to visualize time. It allows for customizable countdowns, tracks your focus sessions, and provides a dashboard of your progress. Designed for seamless integration with Apple devices, it helps you manage work, study, or any focused activity.

**Highlights:** Circular ring timer visualization, Countdown and count-up timers, Live Activity and Dynamic Island support, Session tagging and dashboard, Focus history tracking, Apple Watch app and complications, Data stored locally

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 倍速時計 free?

倍速時計 is free to download, with in-app purchases available.

### Is Rin free?

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

### Do 倍速時計 or Rin have ads?

Neither 倍速時計 nor Rin shows ads.

### Which is updated more often, 倍速時計 or Rin?

倍速時計 ships an update every 3 weeks, and Rin every 3 days. Most recently, 倍速時計 was updated on October 2, 2026 and Rin on October 14, 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.*