# 密码本 vs SecurityKeys

The clearest difference is in-app purchases: SecurityKeys at none against 密码本's 1. 密码本's advantage is iOS requirement (10.3 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. 密码本 sells 1 one-off in-app purchase. SecurityKeys asks for nothing beyond the download.

## The numbers

| Metric | 密码本 | SecurityKeys |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 7 MB | 1 MB |
| Requires iOS | **10.3** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [佳隆 伍](https://appshunter.io/developer/1242654786) | [圣财 卢](https://appshunter.io/developer/1803211672) |

## What reviewers say

### 密码本

[App page](https://appshunter.io/ios/app/id1500100052)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁功能限制 | $1.99 | one-time |


### SecurityKeys

[App page](https://appshunter.io/ios/app/securitykeys/id6747809012)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 密码本 free?

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

### Is SecurityKeys free?

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

### Do 密码本 or SecurityKeys have ads?

Neither 密码本 nor SecurityKeys shows ads.

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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.*