# NLE Calc vs ZalBa

The clearest difference is update cadence: NLE Calc at fortnightly against ZalBa's every 4 months. 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.

NLE Calc ships an update fortnightly, ZalBa every 4 months. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | NLE Calc | ZalBa |
| --- | --- | --- |
| 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 | **Fortnightly** | Every 4 months |
| Monetization | Free | — |
| Size | 62 MB | 31 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Centers For Disease Control and Prevention](https://appshunter.io/developer/439259253) | [Visionhitech](https://appshunter.io/developer/508249261) |

## What reviewers say

### 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


### ZalBa

[App page](https://appshunter.io/ios/app/zalba/id6742443834)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NLE Calc free?

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

### Is ZalBa free?

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

### Do NLE Calc or ZalBa have ads?

Neither NLE Calc nor ZalBa shows ads.

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

NLE Calc ships an update fortnightly, and ZalBa every 4 months. Most recently, NLE Calc was updated on November 3, 2026 and ZalBa on October 25, 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.*