# T Calc vs ORB Calculator

The clearest difference is iOS requirement: ORB Calculator at 9.0 against T Calc's 13.0. 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 | T Calc | ORB Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (3 ratings)](https://appshunter.io/ios/app/t-calc/id989710656/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | — |
| Monetization | Free | — |
| Size | 2 MB | 19 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ViralMD](https://appshunter.io/developer/989710655) | [The University of Edinburgh](https://appshunter.io/developer/428517240) |

## What reviewers say

### T Calc

[App page](https://appshunter.io/ios/app/t-calc/id989710656)

This tool helps clinicians quickly and accurately calculate circulating free and bioavailable testosterone levels. Input lab values for Albumin, SHBG, and Testosterone to get precise results, reducing manual calculation errors.

**Highlights:** Calculate free testosterone, Calculate bioavailable testosterone, Input lab values (Albumin, SHBG, Testosterone), Reduce manual calculation errors, Fast and accurate results, Reference ranges provided

**Features:** macOS Compatibility

**In-app purchases:** none


### ORB Calculator

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is T Calc free?

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

### Is ORB Calculator free?

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

### Do T Calc or ORB Calculator have ads?

Neither T Calc nor ORB 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.*