# Sling Load Calculator vs RigThis

The clearest difference is price: RigThis at Free against Sling Load Calculator's $4.99. RigThis also leads on rating (5.0 vs 3.0) and update cadence (every 3 weeks vs every 48 months). Sling Load Calculator's advantage is in-app purchases (none vs 1) and ratings volume (3 vs 1). On ads and device support there is nothing between them.

RigThis is free to download; Sling Load Calculator costs $4.99 up front. RigThis sells 1 one-off in-app purchase. Sling Load Calculator asks for nothing beyond the download.

RigThis holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Sling Load Calculator ships an update every 48 months, RigThis every 3 weeks. The most recent releases landed on September 29, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Sling Load Calculator | RigThis |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [3.0 (3 ratings)](https://appshunter.io/ios/app/sling-load-calculator/id1397392678/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rigthis/id6770800479/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 48 months | **Every 3 weeks** |
| Monetization | Paid | **Freemium** |
| Size | 18 MB | 2 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) | [Circux Systems LLC](https://appshunter.io/developer/1896763824) |

## What reviewers say

### Sling Load Calculator

[App page](https://appshunter.io/ios/app/sling-load-calculator/id1397392678)

This utility app helps determine the force exerted on lifting slings by calculating sling stress. It removes guesswork for safe lifts by considering sling capacity, load weight, and various length and distance measurements.

**Highlights:** Calculate sling stress, Determine force on lifting slings, Input rated safe working load, Input total load weight, Input sling length, Input vertical distance to hook

**Features:** macOS Compatibility

**In-app purchases:** none


### RigThis

[App page](https://appshunter.io/ios/app/rigthis/id6770800479)

This app provides essential rigging calculations for live event professionals. It includes tools for bridle calculations, truss load distribution, and unit conversion, with advanced features available through a one-time purchase.

**Highlights:** 2-leg bridle calculator with visual diagram, Truss load distribution tool, Length and weight unit converter, 3-leg bridle calculator (Pro), Save and recall calculation history (Pro), Venue specs management (Pro)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RigThat Pro | $49.99 | one-time |


## Frequently asked questions

### Is Sling Load Calculator free?

Sling Load Calculator costs $4.99, with no in-app purchases.

### Is RigThis free?

RigThis is free to download, with in-app purchases available.

### Which has better reviews, Sling Load Calculator or RigThis?

RigThis is rated higher. Sling Load Calculator averages 3.0 out of 5 from 3 ratings, while RigThis averages 5.0 from 1 ratings.

### Do Sling Load Calculator or RigThis have ads?

Neither Sling Load Calculator nor RigThis shows ads.

### Which is updated more often, Sling Load Calculator or RigThis?

Sling Load Calculator ships an update every 48 months, and RigThis every 3 weeks. Most recently, Sling Load Calculator was updated on September 29, 2026 and RigThis on October 12, 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.*