# 答案之书 vs 二次元拍立得

The clearest difference is in-app purchases: 二次元拍立得 at none against 答案之书's 1. 二次元拍立得 also leads on iOS requirement (12.0 vs 15.0). 答案之书's advantage is device support. On price there is nothing between them.

Both are free to download. 答案之书 sells 1 one-off in-app purchase. 二次元拍立得 asks for nothing beyond the download.

## The numbers

| Metric | 答案之书 | 二次元拍立得 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | Every 12 months | — |
| Size | 6 MB | 137 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 12+ |
| Developer | [唯墨科技](https://appshunter.io/developer/1240699340) | [昶燎 张](https://appshunter.io/developer/399224946) |

## What reviewers say

### 答案之书

[App page](https://appshunter.io/ios/app/id1475703134)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁无限问题 | $0.99 | one-time |


### 二次元拍立得

[App page](https://appshunter.io/ios/app/id6479602612)

**In-app purchases:** none


## Frequently asked questions

### Is 答案之书 free?

答案之书 is free to download, with in-app purchases available.

### Is 二次元拍立得 free?

二次元拍立得 is free to download, with no in-app purchases.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*