TechTools App vs ROE Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TechTools App
This app provides essential tools for lighting technicians, desk operators, and network administrators. It includes calculators for DMX addressing, IP addresses, and beam calculations, along with various useful converters for technical data.
- DMX addressing wizard
- IP address and class calculator
- Color code reference
- Beam calculator
- Electrical cable color codes
- Ingress Protection Code guide
- Technical data converters
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This application aims to be in the pocket of any technician, light desk operator, or stage network administrator. You will find the most useful tools for a lighting technician or manager, a desk operator or a network administrator. - DMX addressing wizard and dipswitch - IP addresses and classes - Color code - Beam Calculator - Electrical cable colors - Ingress Protection Code As well as several converters : - percentage / decimal on 24 bits, i.e. 3 bytes (for the usual coarse/fine/ultra values on the lighting desks and in the fixtures). - CIDR notation / dotted decimal notation for network masks - hexadecimal / decimal for ART-net universes notations, for example
ROE Calculator
This application provides essential technical calculations for LED screens, including ballast, pixel, and power requirement analysis. It's designed to be the ultimate tool for LED technicians during on-site work and production preparation.
- Ballast calculation
- Pixel and resolution calculation
- Power requirement analysis
- Technical calculations for LED screens
- On-site and preparation tools
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ROE Visual is proud to announce the release of its groundbreaking ROE Calculator APP. This cutting-edge application is a complete upgrade of the previous ballast calculator and has added many new and exciting options to create essential technical calculations for your LED screens. With a comprehensive suite of tools that include ballast calculation, pixel and resolution calculation, power requirement analysis, and much more, the ROE Calculator APP will become the ultimate tool for LED technicians, whether on-site or in the preparation stages of production.
Screenshots
Verdict
The clearest difference is price: ROE Calculator at Free against TechTools App's $4.00. ROE Calculator also leads on update cadence (every 6 weeks vs every 25 months). On review sentiment, ads, in-app purchases 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
ROE Calculator is free to download; TechTools App costs $4.00 up front. Neither carries in-app purchases, so what you see is what you pay.
TechTools App ships an update every 25 months, ROE Calculator every 6 weeks. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.
| Parameter | TechTools App | ROE Calculator |
|---|---|---|
| Price | $4.00 | Free — better |
| Rating | — | 4.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 25 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.1 — better | 15.1 |
| Further details — not scored | ||
| Size | 16 MB | 29 MB |
| Age rating | 17+ | 4+ |
| Developer | Noe Loridan | ROE Visual Co., Ltd |
Customer experience
TechTools App
ROE Calculator
In-app purchases
TechTools App
No in-app purchases
ROE Calculator
No in-app purchases
