# 集中タイマー vs Oshi Time

The clearest difference is in-app purchases: 集中タイマー at none against Oshi Time's 5. Oshi Time's advantage is update cadence (every 5 days vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Oshi Time sells 5 in-app purchases, starting at $2.49 per month. 集中タイマー asks for nothing beyond the download.

集中タイマー ships an update every 9 months, Oshi Time every 5 days. The most recent releases landed on August 13, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | 集中タイマー | Oshi Time |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 54.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 9 months | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 28 MB | 147 MB |
| Requires iOS | **15.0** | 16.2 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kousaka Kirino](https://appshunter.io/developer/1037180476) | [keita suzuki](https://appshunter.io/developer/1620148819) |

## What reviewers say

### 集中タイマー

[App page](https://appshunter.io/ios/app/id6446185573)

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

**In-app purchases:** none


### Oshi Time

[App page](https://appshunter.io/ios/app/oshi-time-study-and-focus-timer/id6449951882)

Enhance your study sessions with a personalized focus timer featuring your favorite idols, characters, or actors. Earn motivational messages and track your progress with customizable themes and layouts. Turn your passion into productivity and build discipline.

**Highlights:** Customizable themes with favorite characters, Motivational reward messages, Automatic study hour tracking, Pomodoro, countdown, and stopwatch modes, Ticket Mode for event syncing, Immersive focus with UI hiding

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $2.49 | per month |
| Premium Plan | $2.99 | per month |
| Premium Plan | $17.99 | per year |
| Premium Plan | $24.99 | per year |
| Premium Plan | $79.99 | one-time |


## Frequently asked questions

### Is 集中タイマー free?

集中タイマー is free to download, with no in-app purchases.

### Is Oshi Time free?

Oshi Time is free to download, with in-app purchases available.

### Do 集中タイマー or Oshi Time have ads?

Both 集中タイマー and Oshi Time show ads.

### Which is updated more often, 集中タイマー or Oshi Time?

集中タイマー ships an update every 9 months, and Oshi Time every 5 days. Most recently, 集中タイマー was updated on August 13, 2026 and Oshi Time on September 8, 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.*