# Sling Load Calculator vs Will

The clearest difference is price: Will at Free against Sling Load Calculator's $4.99. Will also leads on update cadence (every 3 weeks vs every 48 months). Sling Load Calculator's advantage is in-app purchases (none vs 3) and iOS requirement (13.0 vs 16.4). On ads and device support there is nothing between them.

Will is free to download; Sling Load Calculator costs $4.99 up front. Will sells 3 in-app purchases, starting at $3.99 per month. Sling Load Calculator asks for nothing beyond the download.

Sling Load Calculator ships an update every 48 months, Will every 3 weeks. The most recent releases landed on November 2, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Sling Load Calculator | Will |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/sling-load-calculator/id1397392678/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 48 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 18 MB | 62 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) | [CPX Studio e.U.](https://appshunter.io/developer/1465142988) |

## 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


### Will

[App page](https://appshunter.io/ios/app/will-your-last-message/id1559434152)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Will+ Monthly | $3.99 | per month |
| Will+ Annual | $29.99 | per year |
| Will+ Lifetime | $89.99 | one-time |


## Frequently asked questions

### Is Sling Load Calculator free?

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

### Is Will free?

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

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

Neither Sling Load Calculator nor Will shows ads.

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

Sling Load Calculator ships an update every 48 months, and Will every 3 weeks. Most recently, Sling Load Calculator was updated on November 2, 2026 and Will on November 11, 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.*