# ErgoArmMeter vs NLE Calc

The clearest difference is update cadence: NLE Calc at fortnightly against ErgoArmMeter's every 4 months. ErgoArmMeter's advantage is iOS requirement (8.1 vs 12.0). 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.

ErgoArmMeter ships an update every 4 months, NLE Calc fortnightly. The most recent releases landed on October 9, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | ErgoArmMeter | NLE Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.8 (10 ratings)](https://appshunter.io/ios/app/nle-calc/id1266403464/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 11 MB | 62 MB |
| Requires iOS | **8.1** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Karolinska Institutet](https://appshunter.io/developer/969523861) | [Centers For Disease Control and Prevention](https://appshunter.io/developer/439259253) |

## What reviewers say

### ErgoArmMeter

[App page](https://appshunter.io/ios/app/ergoarmmeter/id1042947334)

**Features:** macOS Compatibility

**In-app purchases:** none


### NLE Calc

[App page](https://appshunter.io/ios/app/nle-calc/id1266403464)

This utility calculates the Recommended Weight Limit (RWL) and Lifting Index (LI) for single or multiple lifting tasks based on the NIOSH Lifting Equation. It helps assess physical stress to prevent low back musculoskeletal disorders.

**Highlights:** Calculates Recommended Weight Limit (RWL), Calculates Lifting Index (LI), Calculates Composite Lifting Index (CLI), Based on Revised NIOSH Lifting Equation, Assesses physical stress for lifting tasks

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

**In-app purchases:** none


## Frequently asked questions

### Is ErgoArmMeter free?

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

### Is NLE Calc free?

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

### Do ErgoArmMeter or NLE Calc have ads?

Neither ErgoArmMeter nor NLE Calc shows ads.

### Which is updated more often, ErgoArmMeter or NLE Calc?

ErgoArmMeter ships an update every 4 months, and NLE Calc fortnightly. Most recently, ErgoArmMeter was updated on October 9, 2026 and NLE Calc on October 18, 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.*