# Sling Load Calc vs ESS Workforce

The clearest difference is in-app purchases: ESS Workforce at none against Sling Load Calc's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Sling Load Calc sells 4 in-app purchases, starting at $1.99 per month. ESS Workforce asks for nothing beyond the download.

Sling Load Calc ships an update every 2 weeks, ESS Workforce every 3 weeks. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Sling Load Calc | ESS Workforce |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/sling-load-calc/id6741319888/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Freemium | — |
| Size | 111 MB | 24 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Prakash Solanki](https://appshunter.io/developer/1704788507) | [Garcia Innovations LLC](https://appshunter.io/developer/1896275151) |

## What reviewers say

### Sling Load Calc

[App page](https://appshunter.io/ios/app/sling-load-calc/id6741319888)

This app provides precise calculations for sling tension, length, and angle, essential for safe and efficient lifting operations. It's designed for professionals in heavy lifting industries, offering detailed reports and supporting various rigging configurations.

**Highlights:** Accurate sling tension calculations, Support for vertical and multi-sling loads, Easy-to-use interface, Detailed load and tension reports, Choice of measurement systems, Ensures safety standard compliance

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month plan | $1.99 | per month |
| Special 1 Year Plan | $9.99 | per year |
| Rigging Cal Pro | $14.99 | per year |
| Yearly Pro Plan | $14.99 | per year |


### ESS Workforce

[App page](https://appshunter.io/ios/app/ess-workforce/id6773885092)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sling Load Calc free?

Sling Load Calc is free to download, with in-app purchases available.

### Is ESS Workforce free?

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

### Do Sling Load Calc or ESS Workforce have ads?

Neither Sling Load Calc nor ESS Workforce shows ads.

### Which is updated more often, Sling Load Calc or ESS Workforce?

Sling Load Calc ships an update every 2 weeks, and ESS Workforce every 3 weeks. Most recently, Sling Load Calc was updated on October 3, 2026 and ESS Workforce on October 7, 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.*