# 减法人生 vs Cat Hourglass

The clearest difference is price: Cat Hourglass at Free against 减法人生's $0.99. Cat Hourglass also leads on update cadence (every 4 days vs every 3 months). 减法人生's advantage is in-app purchases (none vs 4) and iOS requirement (15.6 vs 17.0). On ads and device support there is nothing between them.

Cat Hourglass is free to download; 减法人生 costs $0.99 up front. Cat Hourglass sells 4 in-app purchases, starting at $2.00 per month. 减法人生 asks for nothing beyond the download.

减法人生 ships an update every 3 months, Cat Hourglass every 4 days. The most recent releases landed on November 8, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | 减法人生 | Cat Hourglass |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 2 MB | 162 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [鹏飞 石](https://appshunter.io/developer/1783564981) | [QUN LIN](https://appshunter.io/developer/6799467354) |

## What reviewers say

### 减法人生

[App page](https://appshunter.io/ios/app/id6739448227)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cat Hourglass

[App page](https://appshunter.io/ios/app/cat-hourglass-focus-timer/id6810741521)

Enhance focus with a charming cat companion and engaging visual timers. Earn fish by completing focus sessions, which can then be redeemed for custom rewards. Track progress with detailed records and enjoy offline functionality for basic timers.

**Highlights:** Illustrated hourglass and water-stone timers, Earn fish for focus sessions, Customizable tasks, durations, and rewards, Detailed focus records and heatmaps, Syncs between iPhone and Apple Watch, Offline timer functionality

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.00 | per month |
| Annual Premium | $6.99 | per year |
| Cat Hourglass Lifetime | $10.49 | one-time |
| Cat Hourglass Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is 减法人生 free?

减法人生 costs $0.99, with no in-app purchases.

### Is Cat Hourglass free?

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

### Do 减法人生 or Cat Hourglass have ads?

Neither 减法人生 nor Cat Hourglass shows ads.

### Which is updated more often, 减法人生 or Cat Hourglass?

减法人生 ships an update every 3 months, and Cat Hourglass every 4 days. Most recently, 减法人生 was updated on November 8, 2026 and Cat Hourglass on November 12, 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.*