# 房贷计算器 vs 发票窝

The clearest difference is update cadence: 房贷计算器 at fortnightly against 发票窝's monthly. 房贷计算器 also leads on iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

房贷计算器 ships an update fortnightly, 发票窝 monthly. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | 房贷计算器 | 发票窝 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 18 MB | 2 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [克华 张](https://appshunter.io/developer/1281380073) | [容升 柴](https://appshunter.io/developer/1895493111) |

## What reviewers say

### 房贷计算器

[App page](https://appshunter.io/ios/app/2024/id6496971346)

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

**In-app purchases:** none


### 发票窝

[App page](https://appshunter.io/ios/app/id6764766528)

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

**In-app purchases:** none


## Frequently asked questions

### Is 房贷计算器 free?

房贷计算器 is free to download, with no in-app purchases.

### Is 发票窝 free?

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

### Do 房贷计算器 or 发票窝 have ads?

Neither 房贷计算器 nor 发票窝 shows ads.

### Which is updated more often, 房贷计算器 or 发票窝?

房贷计算器 ships an update fortnightly, and 发票窝 monthly. Most recently, 房贷计算器 was updated on October 6, 2026 and 发票窝 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.*