# Slow Ink Clock vs 观序

The clearest difference is device support: 观序 at 4 against Slow Ink Clock's 2. 观序 also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Slow Ink Clock sells 4 in-app purchases, starting at $0.99 per month and 观序 sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Slow Ink Clock ships an update every 9 days, 观序 every 8 days. Both last shipped on November 10, 2026.

## The numbers

| Metric | Slow Ink Clock | 观序 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 8 days** |
| Size | 376 MB | 72 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Li](https://appshunter.io/developer/1886938485) | [东斌 周](https://appshunter.io/developer/1792134485) |

## What reviewers say

### Slow Ink Clock

[App page](https://appshunter.io/ios/app/slow-ink-clock/id6772479285)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ink Weather Monthly | $0.99 | per month |
| Ink Weather Yearly | $5.99 | per year |
| Slow Ink Clock Font Pack | $0.99 | one-time |
| Slow Ink Clock Lifetime | $14.99 | one-time |


### 观序

[App page](https://appshunter.io/ios/app/id6825271579)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 观序会员-月 | $3.99 | per month |
| 观序会员 Pro-月 | $7.99 | per month |
| 观序会员-年 | $39.99 | per year |


## Frequently asked questions

### Is Slow Ink Clock free?

Slow Ink Clock is free to download, with in-app purchases available.

### Is 观序 free?

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

### Do Slow Ink Clock or 观序 have ads?

Neither Slow Ink Clock nor 观序 shows ads.

### Which is updated more often, Slow Ink Clock or 观序?

Slow Ink Clock ships an update every 9 days, and 观序 every 8 days. Most recently, Slow Ink Clock was updated on November 10, 2026 and 观序 on November 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.*