# TBSS vs MMT Calculator

The clearest difference is price: TBSS at Free against MMT Calculator's $5.99. TBSS also leads on iOS requirement (7.0 vs 18.2). MMT Calculator's advantage is update cadence (fortnightly vs every 13 months). On ads, in-app purchases and device support there is nothing between them.

TBSS is free to download; MMT Calculator costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TBSS ships an update every 13 months, MMT Calculator fortnightly. The most recent releases landed on October 4, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | TBSS | MMT Calculator |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Fortnightly** |
| Monetization | — | Paid |
| Size | 1 MB | 6 MB |
| Requires iOS | **7.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [nuit software](https://appshunter.io/developer/491342775) | [MASAYA SHIMOZATO](https://appshunter.io/developer/1807683227) |

## What reviewers say

### TBSS

[App page](https://appshunter.io/ios/app/tbss/id641017029)

**Features:** macOS Compatibility

**In-app purchases:** none


### MMT Calculator

[App page](https://appshunter.io/ios/app/mmt-calculator/id6744838594)

This clinical support tool helps organize muscle strength findings and connect them to neurological evaluation and clinical reasoning. It visualizes the relationship between muscles, nerves, and spinal levels, aiding in the understanding of neurological examination and supporting clinical decision-making.

**Highlights:** Simplified screening mode for weakened muscles, Detailed manual muscle testing instructions, Visualization of neurological pathways, Unilateral and bilateral assessment support, Abbreviation display for muscle names, Backup and restore functionality, Redesigned intuitive user interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TBSS free?

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

### Is MMT Calculator free?

MMT Calculator costs $5.99, with no in-app purchases.

### Do TBSS or MMT Calculator have ads?

Neither TBSS nor MMT Calculator shows ads.

### Which is updated more often, TBSS or MMT Calculator?

TBSS ships an update every 13 months, and MMT Calculator fortnightly. Most recently, TBSS was updated on October 4, 2026 and MMT Calculator on October 28, 2026.

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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.*