# Hello Bridge vs Scientific math Calculator

The clearest difference is price: Hello Bridge at Free against Scientific math Calculator's $0.99. Scientific math Calculator's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Hello Bridge is free to download; Scientific math Calculator costs $0.99 up front. Hello Bridge sells 3 in-app purchases, starting at $3.99 per month. Scientific math Calculator asks for nothing beyond the download.

## The numbers

| Metric | Hello Bridge | Scientific math Calculator |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Size | 13 MB | 5 MB |
| Requires iOS | **18.0** | 18.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [乐祥 胡](https://appshunter.io/developer/1572365721) | [贺 周](https://appshunter.io/developer/1815397078) |

## What reviewers say

### Hello Bridge

[App page](https://appshunter.io/ios/app/hello-bridge/id6755834425)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hello Bridge Premium - monthly | $3.99 | per month |
| Hello Bridge Premium - yearly | $9.99 | per year |
| Langauge Bridge Premium - lifetime | $24.99 | one-time |


### Scientific math Calculator

[App page](https://appshunter.io/ios/app/scientific-math-calculator/id6759213986)

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

**In-app purchases:** none


## Frequently asked questions

### Is Hello Bridge free?

Hello Bridge is free to download, with in-app purchases available.

### Is Scientific math Calculator free?

Scientific math Calculator costs $0.99, with no in-app purchases.

### Do Hello Bridge or Scientific math Calculator have ads?

Neither Hello Bridge nor Scientific math Calculator 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.*