# 体重管理BMI vs 数字签章签字宝

The clearest difference is update cadence: 体重管理BMI at daily against 数字签章签字宝's every 3 weeks. 体重管理BMI also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 体重管理BMI sells 3 in-app purchases, starting at $3.99 per month and 数字签章签字宝 sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

体重管理BMI ships an update daily, 数字签章签字宝 every 3 weeks. The most recent releases landed on October 7, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | 体重管理BMI | 数字签章签字宝 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Every 3 weeks |
| Size | 31 MB | 75 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [良来 姜](https://appshunter.io/developer/1635476455) | [成都缘木明珠网络科技有限公司](https://appshunter.io/developer/1739994212) |

## What reviewers say

### 体重管理BMI

[App page](https://appshunter.io/ios/app/bmi/id6745217207)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 体重管理BMI月度高级账号订阅 | $3.99 | per month |
| 体重管理BMI季度会员高级账号 | $7.99 | per 3 months |
| 体重管理BMI年度会员高级帐户 | $9.99 | per year |


### 数字签章签字宝

[App page](https://appshunter.io/ios/app/id6796253309)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $3.99 | per month |
| 年会员 | $14.99 | per year |


## Frequently asked questions

### Is 体重管理BMI free?

体重管理BMI is free to download, with in-app purchases available.

### Is 数字签章签字宝 free?

数字签章签字宝 is free to download, with in-app purchases available.

### Do 体重管理BMI or 数字签章签字宝 have ads?

Both 体重管理BMI and 数字签章签字宝 show ads.

### Which is updated more often, 体重管理BMI or 数字签章签字宝?

体重管理BMI ships an update daily, and 数字签章签字宝 every 3 weeks. Most recently, 体重管理BMI was updated on October 7, 2026 and 数字签章签字宝 on October 20, 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.*