Sling Load Calculator vs RigThis
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sling Load Calculator
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.
- 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
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The calculator will calculate the load on the sling. Simple and easy to use. Take the guess work out of how much force is exerted on a sling when making a lift with two or more lifting straps. The angles are not always just 45 or 60 degrees as is often listed on the sling capacity tag. Here is an easy way to figure out if it will be a safe lift. All you need to know are four things: 1. The rated vertical safe working load of the sling. 2. The total weight of the load. 3. The length of the sling from the hook to the attachment point. 4. The vertical distance from the load to the hook point.
RigThis
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.
- 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)
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RigThis puts professional rigging math in your pocket—built for concerts, arenas, and touring crews who need answers on the grid, not back at the office. FREE • 2-leg bridle calculator with visual diagram • Truss load distribution tool • Length and weight unit converter RIGTHAT PRO — ONE-TIME PURCHASE • Projects per show or venue • Venue specs: grid, span, load ratings • 3-leg bridle calculator • Save and recall calculation history • Send per-motor loads from the load tool into bridle math WHY RIGGERS USE IT • Inputs designed for real rigging workflows • Clear results you can verify on site • Comfortable UI for dim venues • Project data stays on your device IMPORTANT RigThat is a calculation aid only. It is not a substitute for a qualified rigger, engineer, or your venue’s approved procedures. Always verify results on site and follow local codes and company policy. Use at your own risk. Questions or feedback? Use Support in the app Settings.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Sling Load Calculator | RigThis |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 3.0 (3 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 48 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 18 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Bhavinkumar Satashiya | Circux Systems LLC |
Customer experience
Sling Load Calculator
RigThis
In-app purchases
Sling Load Calculator
No in-app purchases
RigThis
- RigThat Pro$49.99
Questions
Is Sling Load Calculator free?
Is RigThis free?
Which has better reviews, Sling Load Calculator or RigThis?
Do Sling Load Calculator or RigThis have ads?
Which is updated more often, Sling Load Calculator or RigThis?
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