# TechTools App vs ROE Calculator

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.

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.

## The numbers

| Metric | TechTools App | ROE Calculator |
| --- | --- | --- |
| Price | $4.00 | **Free** |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/roe-calculator/id6443583117/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 16 MB | 29 MB |
| Requires iOS | **14.1** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Noe Loridan](https://appshunter.io/developer/1515594299) | [ROE Visual Co., Ltd](https://appshunter.io/developer/966467215) |

## What reviewers say

### TechTools App

[App page](https://appshunter.io/ios/app/techtools-app/id1515594300)

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.

**Highlights:** DMX addressing wizard, IP address and class calculator, Color code reference, Beam calculator, Electrical cable color codes, Ingress Protection Code guide, Technical data converters

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ROE Calculator

[App page](https://appshunter.io/ios/app/roe-calculator/id6443583117)

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.

**Highlights:** Ballast calculation, Pixel and resolution calculation, Power requirement analysis, Technical calculations for LED screens, On-site and preparation tools

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TechTools App free?

TechTools App costs $4.00, with no in-app purchases.

### Is ROE Calculator free?

ROE Calculator is free to download, with no in-app purchases.

### Do TechTools App or ROE Calculator have ads?

Neither TechTools App nor ROE Calculator shows ads.

### Which is updated more often, TechTools App or ROE Calculator?

TechTools App ships an update every 25 months, and ROE Calculator every 6 weeks. Most recently, TechTools App was updated on October 8, 2026 and ROE Calculator on October 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*