# DORILOOP vs Study Countdown

The clearest difference is in-app purchases: Study Countdown at none against DORILOOP's 1. Study Countdown also leads on update cadence (every 8 days vs every 2 weeks). DORILOOP's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price and ads there is nothing between them.

Both are free to download. DORILOOP sells 1 one-off in-app purchase. Study Countdown asks for nothing beyond the download.

DORILOOP ships an update every 2 weeks, Study Countdown every 8 days. The most recent releases landed on October 31, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | DORILOOP | Study Countdown |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Size | 78 MB | 14 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [naoki waratani](https://appshunter.io/developer/1870038956) | [kaisei watanabe](https://appshunter.io/developer/1543587757) |

## What reviewers say

### DORILOOP

[App page](https://appshunter.io/ios/app/doriloop/id6757974564)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $3.99 | one-time |


### Study Countdown

[App page](https://appshunter.io/ios/app/study-countdown-focus-log/id6765840155)

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

**In-app purchases:** none


## Frequently asked questions

### Is DORILOOP free?

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

### Is Study Countdown free?

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

### Do DORILOOP or Study Countdown have ads?

Both DORILOOP and Study Countdown show ads.

### Which is updated more often, DORILOOP or Study Countdown?

DORILOOP ships an update every 2 weeks, and Study Countdown every 8 days. Most recently, DORILOOP was updated on October 31, 2026 and Study Countdown on November 9, 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.*