# Rough Diamond Calculator vs Salina Authenticator

The clearest difference is in-app purchases: Salina Authenticator at none against Rough Diamond Calculator's 3. Rough Diamond Calculator's advantage is iOS requirement (13.0 vs 15.5). On price, ads and device support there is nothing between them.

Both are free to download. Rough Diamond Calculator sells 3 in-app purchases, starting at $1.99 per 7 days. Salina Authenticator asks for nothing beyond the download.

## The numbers

| Metric | Rough Diamond Calculator | Salina Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 38 months | — |
| Size | 51 MB | 33 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gorasiya Vishal Nanjibhai](https://appshunter.io/developer/1287086933) | [QuantumGate](https://appshunter.io/developer/1822269112) |

## What reviewers say

### Rough Diamond Calculator

[App page](https://appshunter.io/ios/app/rough-diamond-calculator/id1343735836)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Yearly | $9.99 | per year |
| Lifetime | $19.99 | one-time |


### Salina Authenticator

[App page](https://appshunter.io/ios/app/salina-authenticator/id6749573834)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rough Diamond Calculator free?

Rough Diamond Calculator is free to download, with in-app purchases available.

### Is Salina Authenticator free?

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

### Do Rough Diamond Calculator or Salina Authenticator have ads?

Neither Rough Diamond Calculator nor Salina Authenticator 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.*