# 深化 vs Circle timer

The clearest difference is price: 深化 at Free against Circle timer's $0.99. Circle timer's advantage is iOS requirement (14.4 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

深化 is free to download; Circle timer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

深化 ships an update every 2 days, Circle timer every 4 days. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 深化 | Circle timer |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 days |
| Size | 2 MB | 1 MB |
| Requires iOS | 17.0 | **14.4** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [takanori hosoi](https://appshunter.io/developer/642106741) | [hideo nakamura](https://appshunter.io/developer/1242808811) |

## What reviewers say

### 深化

[App page](https://appshunter.io/ios/app/id6474303879)

**Features:** Apple Watch app

**In-app purchases:** none


### Circle timer

[App page](https://appshunter.io/ios/app/circle-timer-pie-chart-timer/id6686403808)

**In-app purchases:** none


## Frequently asked questions

### Is 深化 free?

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

### Is Circle timer free?

Circle timer costs $0.99, with no in-app purchases.

### Do 深化 or Circle timer have ads?

Neither 深化 nor Circle timer shows ads.

### Which is updated more often, 深化 or Circle timer?

深化 ships an update every 2 days, and Circle timer every 4 days. Most recently, 深化 was updated on October 13, 2026 and Circle timer on October 5, 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.*