# Rigger Ref

> Rigger Ref: Reference and calculation tool for rigging professionals. (iPhone/iPad app by Gumball Labs.)

- Source: https://appshunter.io/ios/app/rigger-ref/id391297567 (this page in markdown: same URL + `.md`)
- Developer: [Gumball Labs](https://appshunter.io/developer/1222334161)
- Category: Reference, Utilities
- Price: $19.99
- Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 7 MB
- Languages: American English
- Released: 2010-09-17
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/rigger-ref/id391297567/reviews.md

## What is Rigger Ref?

Rigger Ref is a reference and calculation utility for riggers.   Keep specifications of ropes, hardware, slings, and material densities at your finger tips.  Quickly figure safe working loads, line sag, amount of line on a drum, and bridle calculations.

Calculation features:
-Figure Catenary curves based on line tension, weight, line weight, and tower heights. 
-Figure amount of Line on a Drum using Drum Calc
-Estimate weights based on volume and materials using Load Calc
-Figure sling tension, and angles for different bridles
-US and Metric units / on the fly conversion

Reference Features:
-Common Rope Specifications
-Common Hardware Specifications
-Common Sling Specifications
-Search Specifications and Comments
-Automatically figure Safe Working Loads

Customization Features:
-Add your own Ropes or Hardware
-Set your own Safety Factors for figuring Safe Working Loads
-Track which ropes and hardware you've got on hand. 
-Create manifests of frequently used equipment to automatically total weights or costs.  
-Track when a manifest or equipment exceeds or falls short of a weight budget.
-Mail manifests of equipment or labor quickly.   
-Easily import manifests onto other devices running Rigger Ref.

## Key features

- Rope, hardware, and sling specifications
- Safe working load calculations
- Line sag and line on drum calculations
- Bridle and sling tension calculations
- US and metric unit conversions
- Customizable equipment lists and manifests
- Weight and cost budgeting

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/rigger-ref/id391297567/reviews.md

### 5/5 — Rigger's dream

*2013-05-12*

Outstanding simple interface for referencing sling and hardware capacities. I have tried others but find this app to be the most clear and usable in the field.

### 2/5 — Not what I was looking for

*2011-12-05*

Does not give any useful information.

## Frequently asked questions about Rigger Ref

### What are the main calculation features of Rigger Ref?

Rigger Ref can calculate catenary curves, the amount of line on a drum, estimate weights based on materials, and figure sling tension and angles for different bridles.

### Does Rigger Ref support different units of measurement?

Yes, Rigger Ref supports both US and metric units and allows for on-the-fly conversion between them.

### Can I add my own custom equipment to Rigger Ref?

Yes, you can add your own ropes or hardware to the app. You can also set your own safety factors for calculating safe working loads.

### How does Rigger Ref help with managing equipment?

You can track which ropes and hardware you have on hand, create manifests of frequently used equipment to total weights or costs, and track if manifests exceed weight budgets.

### What is the price of Rigger Ref?

Rigger Ref is a paid application priced at $19.99.

### On which devices can I use Rigger Ref?

Rigger Ref is available for iPhone and iPod devices.

### How often is Rigger Ref updated?

The latest version, 2.2.0, was released on August 19, 2024, indicating active development and updates.

### Does Rigger Ref have ads?

No, Rigger Ref does not contain advertisements.

## Version history (last 5 releases)

### 2.2.0 — 2024-08-19

Bug fixes and performance improvements

### 2.1.0 — 2019-10-04

Dark mode support
Fix for missing Catenary Calculator Result on iOS 13
Fix Issue with Metric Conversions on manifests

### 2.0.0 — 2017-10-02

Updated Look and Feel
Support for Dynamic Text Sizes
Support for iOS 11

### 1.0.3 — 2012-10-24

iPhone 5 resolution support
iOS 6 Data Entry issue resolved.

### 1.0.1 — 2010-11-04

Added Steel Sling Specifications for one part Hand spliced and one part mechanically spliced Wire Rope. 
Corrected issue with support scripts. 
Fixed external Url access with special characters (Source field).

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All apps by Gumball Labs: https://appshunter.io/developer/1222334161

## Related topics

[gumball labs](https://appshunter.io/ios/topics/gumball-labs) · [catenary](https://appshunter.io/ios/topics/catenary) · [rigging lab](https://appshunter.io/ios/topics/rigging-lab)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*