# POMO | 勉強・仕事に集中するためのポモドーロタイマー vs Rin

The clearest difference is update cadence: Rin at every 3 days against POMO | 勉強・仕事に集中するためのポモドーロタイマー's every 16 months. POMO | 勉強・仕事に集中するためのポモドーロタイマー's advantage is iOS requirement (15.1 vs 17.0). 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.

POMO | 勉強・仕事に集中するためのポモドーロタイマー ships an update every 16 months, Rin every 3 days. The most recent releases landed on September 9, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | POMO | 勉強・仕事に集中するためのポモドーロタイマー | Rin |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 days** |
| Size | 30 MB | 5 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Toshihide Miyake](https://appshunter.io/developer/1552651386) | [Yuka Kubo](https://appshunter.io/developer/1857610643) |

## What reviewers say

### POMO | 勉強・仕事に集中するためのポモドーロタイマー

[App page](https://appshunter.io/ios/app/pomo/id6740882697)

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

**In-app purchases:** none


### Rin

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

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

**In-app purchases:** none


## Frequently asked questions

### Is POMO | 勉強・仕事に集中するためのポモドーロタイマー free?

POMO | 勉強・仕事に集中するためのポモドーロタイマー is free to download, with no in-app purchases.

### Is Rin free?

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

### Do POMO | 勉強・仕事に集中するためのポモドーロタイマー or Rin have ads?

Neither POMO | 勉強・仕事に集中するためのポモドーロタイマー nor Rin shows ads.

### Which is updated more often, POMO | 勉強・仕事に集中するためのポモドーロタイマー or Rin?

POMO | 勉強・仕事に集中するためのポモドーロタイマー ships an update every 16 months, and Rin every 3 days. Most recently, POMO | 勉強・仕事に集中するためのポモドーロタイマー was updated on September 9, 2026 and Rin on September 29, 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.*