# ORB Calculator vs Right Decision Service

The clearest difference is iOS requirement: ORB Calculator at 9.0 against Right Decision Service's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | ORB Calculator | Right Decision Service |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | — | Free |
| Size | 19 MB | 44 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [The University of Edinburgh](https://appshunter.io/developer/428517240) | [Tactuum, LLC](https://appshunter.io/developer/867012029) |

## What reviewers say

### ORB Calculator

[App page](https://appshunter.io/ios/app/orb-calculator/id1497869769)

**Features:** macOS Compatibility

**In-app purchases:** none


### Right Decision Service

[App page](https://appshunter.io/ios/app/right-decision-service/id6443955210)

Provides digital tools to help healthcare professionals and individuals make informed decisions about health and care. It offers validated evidence for quick, safe decision-making on the go.

**Highlights:** Digital decision support tools, Validated evidence-based information, On-the-go decision making, Empowers professionals and citizens, Safe and quick decision support

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

**In-app purchases:** none


## Frequently asked questions

### Is ORB Calculator free?

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

### Is Right Decision Service free?

Right Decision Service is free to download, with no in-app purchases.

### Do ORB Calculator or Right Decision Service have ads?

Neither ORB Calculator nor Right Decision Service 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.*