# ShowTool LD > Lighting design and electrical calculation utility suite for theatre and film. (iPhone/iPad app by Daniel Murfin.) - Source: https://appshunter.io/ios/app/showtool-ld/id319523749 (this page in markdown: same URL + `.md`) - Developer: [Daniel Murfin](https://appshunter.io/developer/319523752) - Category: Utilities, Reference - Price: $4.99 - Rating: 4.70/5 from 6 App Store ratings · 9 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 1 MB - Languages: American English - Released: 2009-06-17 - Data updated: 2026-08-24 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/showtool-ld/id319523749/reviews.md ## What is ShowTool LD? ShowTool LD is a comprehensive suite of Lighting Design and Electrics utilities for theatre and film. Beam Quickly calculate and visualise beam angles, throw and beam diameter. Gel Calculate the number of cuts and wastage from all major gel manufacturers and stock sizes. Choose from a selection of standard frame sizes, or define your own custom frame size. DMX Translate between universe/address and absolute address, discover how many fixtures will fit within a universe and calculate dip switch configuration. Power Simple power calculations in single and three phase configurations. Discover the total power consumption for your rig. Network What is a subnet? Easy tools to discover valid addresses for devices on your lighting network. Lists are kept in sync across all your devices using iCloud. ## Key features - Beam angle and throw calculations - Gel cut and wastage estimation - DMX universe/address translation - Power consumption calculations - Network subnetting tools - iCloud data synchronization ## Recent user reviews (9 of 9) All indexed reviews: https://appshunter.io/ios/app/showtool-ld/id319523749/reviews.md ### 5/5 — Very useful for anyone who works in Show and Event Lighting *2015-07-22* I was weary before buying the bundle (ShowTool LD & Swatch apps). After purchasing them, I can confirm they are very helpful and well designed apps. You won't regret getting either app! Great app for Lighting Designers, Directors, Technicians and Master Electricians. Even if you know how many gel cuts can be made from a full Lee sheet or how to calculate beam throws, this app gives you easier and quicker onsite methods. It's much cleaner and organized to plug in numbers than to type an equation into a calculator. ### 4/5 — Solid. *2012-10-10* What the app claims to do, it does quickly and well. Can't ask for much more than that. Would I mind more features? No. But I'd rather less features that are more polished and work perfectly than a ton of stuff thrown together that barely works. I think the price is slightly steep considering most of this can be done with free apps as well, but there is value in dependability. Don't be afraid to add more stuff in the future, though, dev. ### 5/5 — Great app! *2012-09-24* This is a great app! I love having the dip switch calculator. I bought the app for that reason but now use it for so many things. Makes my job so much better. ### 5/5 — Good app *2011-11-26* I use it all the time ### 3/5 — Disappointing *2011-09-08* Works well but you should buy them seperatly, at least they would be usable... The original Beam calculator is much more efficent, so is the Power calculator. ### 5/5 — Fantastic help! *2011-08-10* Worth every penny! Use daily.... Sooo handy to have in your pocket incase of brain freeze! Jace ### 1/5 — ower of a lighting com. *2011-03-02* I bought the program and found nothing useful. I was hopeing for more tools. I design and do alot of "one ops" and was hopeing for info of fixtures, {how many channels, power and colors}. I e-mailed my issues and did here one time stating it gives dip-switch config. I have a program I got free to do that and power consumtion cal. very disapointed! ### 1/5 — Confusing *2010-08-01* Not sure if it's just me, but I found this app incredibly confusing, and couldn't work out how to apply even the most basic ideas in this software. I personally wish I didn't buy it, and at least wish there could have been some type of demo prior to getting it. ### 4/5 — Time saver *2010-02-22* Have had this for a few months, new version is excellent. Gel tool has been extremely useful and saved both money and time on a number of occasions. Beam calc now in metric is also very useful. The Dip switch utility has come in handy both to settle disagreements and address fixtures. A worthwhile App would not leave home without it. ## Frequently asked questions about ShowTool LD ### What is ShowTool LD? ShowTool LD is a comprehensive suite of utilities designed for lighting design and electrical calculations in theatre and film. It offers tools for beam angles, gel cutting, DMX addressing, power calculations, and network subnetting. ### What devices does ShowTool LD support? ShowTool LD is available on Mac, iPhone, iPad, and iPod. Its features are kept in sync across all your devices using iCloud. ### How much does ShowTool LD cost? ShowTool LD is a paid application priced at $4.99. There are no in-app purchases or subscriptions required. ### Does ShowTool LD have ads? No, ShowTool LD does not contain advertisements. It is a paid application that provides an ad-free experience. ### How often is ShowTool LD updated? The latest version, 4.1.2, was released on March 5, 2023. The app is regularly updated to ensure compatibility and introduce improvements. ### What is the age rating for ShowTool LD? ShowTool LD has an age rating of 4+, making it suitable for a wide range of users. The app's content is generally appropriate for all ages. ### Can I use ShowTool LD offline? While the app's core calculation features are available offline, iCloud synchronization for keeping lists in sync across devices requires an internet connection. ### What kind of electrical calculations does ShowTool LD perform? ShowTool LD performs simple power calculations in both single and three-phase configurations, helping you discover the total power consumption for your lighting rig. ## Version history (last 5 releases) ### 4.1.2 — 2023-03-05 New: Supports iOS 15+ New: Support for beam angles up to 179 degrees Fixed: Keyboard closes on every stroke when labelling list items ### 4.1.1 — 2021-05-23 Fixed: DMX Address list items are now correctly incremented Fixed: Label editing displays now present the back button again Fixed: Prevent the Gel List from continually jumping back to home on iOS 14.5+ ### 4.1 — 2020-11-12 Now available for iOS, iPadOS and macOS ### 4.0.1 — 2020-10-26 Fixes a potential crash after restoring from iCloud Backup ### 4.0 — 2020-09-21 Completely rewritten for a fresh modern look. ## Apps similar to ShowTool LD | App | Rating | Price | Category | | --- | --- | --- | --- | | [ROE Scanner](https://appshunter.io/ios/app/roe-scanner/id6444835025) | — | Free | Utilities | | [shift-label](https://appshunter.io/ios/app/shift-label/id1189771234) | 4.3 (3) | Free | Utilities | | [piXedid](https://appshunter.io/ios/app/pixedid/id1513186628) | 4.0 (1) | Free | Utilities | | [ROBE COM](https://appshunter.io/ios/app/robe-com/id1458007124) | — | Free | Utilities | | [LightFinger](https://appshunter.io/ios/app/lightfinger/id1568459015) | — | Free | Utilities | | [LightChannel](https://appshunter.io/ios/app/lightchannel/id6443777533) | — | Free | Utilities | ## More apps by Daniel Murfin - [ShowTool SM](https://appshunter.io/ios/app/showtool-sm/id352212001) - [ShowTool Swatch](https://appshunter.io/ios/app/showtool-swatch/id519688652) - [CueTrack](https://appshunter.io/ios/app/cuetrack/id1452111375) - [ShowPlay](https://appshunter.io/ios/app/showplay/id1547023004) All apps by Daniel Murfin: https://appshunter.io/developer/319523752 --- *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.*