# Study Timer vs 放射線主任1種

The clearest difference is in-app purchases: 放射線主任1種 at none against Study Timer's 5. 放射線主任1種 also leads on ads (none vs shown) and update cadence (monthly vs every 2 months). On device support and iOS requirement there is nothing between them.

Study Timer ships an update every 2 months, 放射線主任1種 monthly. The most recent releases landed on October 15, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Study Timer | 放射線主任1種 |
| --- | --- | --- |
| Price | **Free** | — |
| Rating | **[4.8 (13 ratings)](https://appshunter.io/ios/app/study-timer-focus-and-pomodoro/id6444372570/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 84.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 478 MB | 34 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [THOMSON Inc.](https://appshunter.io/developer/492371813) | [satoshi yoshida](https://appshunter.io/developer/1873856165) |

## What reviewers say

### Study Timer

[App page](https://appshunter.io/ios/app/study-timer-focus-and-pomodoro/id6444372570)

Enhance your study habits and achieve deep focus with a powerful tracker and timer. Utilize the Pomodoro Technique, calming sounds, and automatic logging to stay motivated and productive. Ideal for students, professionals, and individuals managing ADHD.

**Highlights:** Pomodoro Focus Timer, Automatic Study Tracker, Natural Sounds & Lo-Fi BGM, Study Calendar & Graph View, Exam Countdown, Distraction-Free UI

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (annual) | $5.99 | per year |
| Premium (3-Month) | $7.99 | per 3 months |
| Premium (Yearly) | $15.99 | per year |
| Premium (lifetime) | $9.99 | one-time |
| Premium (Lifetime) | $29.99 | one-time |


### 放射線主任1種

[App page](https://appshunter.io/ios/app/1/id6767240065)

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

**In-app purchases:** none


## Frequently asked questions

### Is Study Timer free?

Study Timer is free to download, with in-app purchases available.

### Is 放射線主任1種 free?

Pricing for 放射線主任1種 is not currently listed on the App Store.

### Do Study Timer or 放射線主任1種 have ads?

Study Timer shows ads; 放射線主任1種 does not.

### Which is updated more often, Study Timer or 放射線主任1種?

Study Timer ships an update every 2 months, and 放射線主任1種 monthly. Most recently, Study Timer was updated on October 15, 2026 and 放射線主任1種 on September 11, 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.*