# eFace Auth vs Scientific math Calculator

The clearest difference is price: eFace Auth at Free against Scientific math Calculator's $0.99. eFace Auth also leads on iOS requirement (13.0 vs 18.4). On ads, in-app purchases and device support there is nothing between them.

eFace Auth is free to download; Scientific math Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | eFace Auth | Scientific math Calculator |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Size | 28 MB | 5 MB |
| Requires iOS | **13.0** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [SkimProt Ltd.](https://appshunter.io/developer/1507981256) | [贺 周](https://appshunter.io/developer/1815397078) |

## What reviewers say

### eFace Auth

[App page](https://appshunter.io/ios/app/eface-auth/id1532238542)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 eFace Auth free?

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

### Is Scientific math Calculator free?

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

### Do eFace Auth or Scientific math Calculator have ads?

Neither eFace Auth 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.*