# ROI计算 vs 建工计算

The clearest difference is in-app purchases: ROI计算 at none against 建工计算's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 建工计算 sells 3 one-off in-app purchases. ROI计算 asks for nothing beyond the download.

## The numbers

| Metric | ROI计算 | 建工计算 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 70 MB | 87 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [天门市万纺信息技术有限公司](https://appshunter.io/developer/1772867820) | [靖翔 尚](https://appshunter.io/developer/1889801343) |

## What reviewers say

### ROI计算

[App page](https://appshunter.io/ios/app/roi/id6747033622)

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

**In-app purchases:** none


### 建工计算

[App page](https://appshunter.io/ios/app/id6798676099)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 季度会员 | $3.99 | one-time |
| 年度会员 | $8.99 | one-time |
| 永久会员 | $14.99 | one-time |


## Frequently asked questions

### Is ROI计算 free?

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

### Is 建工计算 free?

建工计算 is free to download, with in-app purchases available.

### Do ROI计算 or 建工计算 have ads?

Neither ROI计算 nor 建工计算 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.*