Comparison

Sling Load Calculator vs RigThis

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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
Read full description

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.

About

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.

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
Read full description

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

Sling Load Calculator3 screens
RigThis4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard7 real differences · 3 level
Sling Load Calculator versus RigThis: the parameters behind the verdict, then further details
ParameterSling Load CalculatorRigThis
Price$4.99Free — better
Rating3.0 (3 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings3 — better1
Update frequencyEvery 48 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size18 MB2 MB
Age rating4+4+
DeveloperBhavinkumar SatashiyaCircux Systems LLC

Customer experience

Sling Load Calculator

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

RigThis

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Sling Load Calculator

No in-app purchases

1 purchases

RigThis

One-time1
  • RigThat Pro$49.99

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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