# 家信 vs 蓝答

家信 and 蓝答 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

家信 ships an update weekly, 蓝答 every 4 days. Both last shipped on October 12, 2026.

## The numbers

| Metric | 家信 | 蓝答 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Size | 139 MB | 115 MB |
| Requires iOS | 15.5 | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chengdu Ronghe Xinyuan Technology Co., Ltd](https://appshunter.io/developer/1894528546) | [杭州蓝掣科技有限公司](https://appshunter.io/developer/6796554366) |

## What reviewers say

### 家信

[App page](https://appshunter.io/ios/app/ai/id6762529054)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 蓝答

[App page](https://appshunter.io/ios/app/id6796554364)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 家信 free?

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

### Is 蓝答 free?

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

### Do 家信 or 蓝答 have ads?

Neither 家信 nor 蓝答 shows ads.

### Which is updated more often, 家信 or 蓝答?

家信 ships an update weekly, and 蓝答 every 4 days. Most recently, 家信 was updated on October 12, 2026 and 蓝答 on October 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.*