# Keep Time! vs 要事四象限

The clearest difference is price: Keep Time! at Free against 要事四象限's $0.99. Keep Time! also leads on update cadence (every 5 weeks vs every 33 months) and device support. 要事四象限's advantage is in-app purchases (none vs 1).

Keep Time! is free to download; 要事四象限 costs $0.99 up front. Keep Time! sells 1 in-app purchase, starting at $1.99 per year. 要事四象限 asks for nothing beyond the download.

Keep Time! ships an update every 5 weeks, 要事四象限 every 33 months. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Keep Time! | 要事四象限 |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | **Every 5 weeks** | Every 33 months |
| Size | 4 MB | 17 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [锡蕃 林](https://appshunter.io/developer/522352724) | [超 孟](https://appshunter.io/developer/666754845) |

## What reviewers say

### Keep Time!

[App page](https://appshunter.io/ios/app/keep-time-improve-focus/id1134622897)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annually | $1.99 | per year |


### 要事四象限

[App page](https://appshunter.io/ios/app/id6448916763)

**In-app purchases:** none


## Frequently asked questions

### Is Keep Time! free?

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

### Is 要事四象限 free?

要事四象限 costs $0.99, with no in-app purchases.

### Which is updated more often, Keep Time! or 要事四象限?

Keep Time! ships an update every 5 weeks, and 要事四象限 every 33 months. Most recently, Keep Time! was updated on October 2, 2026 and 要事四象限 on October 10, 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.*