# Sling Load Calc vs Viewpoint For Projects™

The clearest difference is in-app purchases: Viewpoint For Projects™ 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. Viewpoint For Projects™ asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sling Load Calc | Viewpoint For Projects™ |
| --- | --- | --- |
| 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 2 weeks |
| Monetization | Freemium | — |
| Size | 111 MB | 128 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Prakash Solanki](https://appshunter.io/developer/1704788507) | [Trimble Inc.](https://appshunter.io/developer/322561665) |

## 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 |


### Viewpoint For Projects™

[App page](https://appshunter.io/ios/app/viewpoint-for-projects/id6762188189)

**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 Viewpoint For Projects™ free?

Viewpoint For Projects™ is free to download, with no in-app purchases.

### Do Sling Load Calc or Viewpoint For Projects™ have ads?

Neither Sling Load Calc nor Viewpoint For Projects™ shows ads.

### Which is updated more often, Sling Load Calc or Viewpoint For Projects™?

Sling Load Calc ships an update every 2 weeks, and Viewpoint For Projects™ every 2 weeks. Most recently, Sling Load Calc was updated on October 30, 2026 and Viewpoint For Projects™ on October 31, 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.*