# 密码本 vs SlowKnit

The clearest difference is in-app purchases: 密码本 at none against SlowKnit's 3. 密码本 also leads on iOS requirement (15.0 vs 17.0). SlowKnit's advantage is ads (none vs shown) and update cadence (every 3 days vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. SlowKnit sells 3 in-app purchases, starting at $0.99 per month. 密码本 asks for nothing beyond the download.

密码本 ships an update every 2 weeks, SlowKnit every 3 days. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 密码本 | SlowKnit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 12 MB | 22 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [浩杰 姬](https://appshunter.io/developer/1514456091) | [瑶 惠](https://appshunter.io/developer/6786498518) |

## What reviewers say

### 密码本

[App page](https://appshunter.io/ios/app/id1660684410)

**Features:** macOS Compatibility

**In-app purchases:** none


### SlowKnit

[App page](https://appshunter.io/ios/app/slowknit-pattern-tracker/id6786511830)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SlowKnit Pro Monthly | $0.99 | per month |
| SlowKnit Pro Yearly | $12.99 | per year |
| SlowKnit Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is 密码本 free?

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

### Is SlowKnit free?

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

### Do 密码本 or SlowKnit have ads?

密码本 shows ads; SlowKnit does not.

### Which is updated more often, 密码本 or SlowKnit?

密码本 ships an update every 2 weeks, and SlowKnit every 3 days. Most recently, 密码本 was updated on September 23, 2026 and SlowKnit on September 17, 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.*