# GrossCalc vs Authenticator app

The clearest difference is in-app purchases: GrossCalc at none against Authenticator app's 1. Authenticator app's advantage is device support (4 vs 2) and iOS requirement (15.6 vs 18.5). On price and ads there is nothing between them.

Both are free to download. Authenticator app sells 1 in-app purchase, starting at $9.99 per 7 days. GrossCalc asks for nothing beyond the download.

## The numbers

| Metric | GrossCalc | Authenticator app |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 3 MB | 12 MB |
| Requires iOS | 18.5 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [yu zhang](https://appshunter.io/developer/1838610900) | [AttestNet](https://appshunter.io/developer/1896768336) |

## What reviewers say

### GrossCalc

[App page](https://appshunter.io/ios/app/grosscalc/id6752984222)

**Features:** macOS Compatibility

**In-app purchases:** none


### Authenticator app

[App page](https://appshunter.io/ios/app/authenticator-app-2fa-mfa/id6781687744)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CardVault Weekly 3 days Trial | $9.99 | per 7 days |


## Frequently asked questions

### Is GrossCalc free?

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

### Is Authenticator app free?

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

### Do GrossCalc or Authenticator app have ads?

Neither GrossCalc nor Authenticator app 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.*