# MMH Calculator vs LiftDiff

The clearest difference is update cadence: LiftDiff at daily against MMH Calculator's every 14 months. MMH Calculator's advantage is iOS requirement (12.0 vs 26.5). 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.

MMH Calculator ships an update every 14 months, LiftDiff daily. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | MMH Calculator | LiftDiff |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mmh-calculator/id448611745/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Daily** |
| Monetization | Free | — |
| Size | 1 MB | 8 MB |
| Requires iOS | **12.0** | 26.5 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Intergo B.V.](https://appshunter.io/developer/662032942) | [Yoshiaki Nozaki](https://appshunter.io/developer/6806490701) |

## What reviewers say

### MMH Calculator

[App page](https://appshunter.io/ios/app/mmh-calculator/id448611745)

Calculate recommended weight limits for lifting tasks using the revised NIOSH equation. This tool helps assess risks and suggests improvements for manual handling in various work situations. It's based on an internationally recognized method.

**Highlights:** Revised NIOSH lifting equation calculation, Recommended weight limit determination, Risk assessment for lifting tasks, Improvement suggestions for tasks, Applicable for working situations, Internationally established method

**Features:** macOS Compatibility

**In-app purchases:** none


### LiftDiff

[App page](https://appshunter.io/ios/app/liftdiff/id6806490699)

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

**In-app purchases:** none


## Frequently asked questions

### Is MMH Calculator free?

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

### Is LiftDiff free?

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

### Do MMH Calculator or LiftDiff have ads?

Neither MMH Calculator nor LiftDiff shows ads.

### Which is updated more often, MMH Calculator or LiftDiff?

MMH Calculator ships an update every 14 months, and LiftDiff daily. Most recently, MMH Calculator was updated on October 7, 2026 and LiftDiff on October 14, 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.*