# RC Circuit Pro vs PID Command & Ctrl

The clearest difference is price: PID Command & Ctrl at Free against RC Circuit Pro's $0.99. RC Circuit Pro's advantage is update cadence (every 4 months vs every 19 months) and iOS requirement (9.0 vs 13.0). On review sentiment, ads, in-app purchases and device support there is nothing between them.

PID Command & Ctrl is free to download; RC Circuit Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RC Circuit Pro ships an update every 4 months, PID Command & Ctrl every 19 months. The most recent releases landed on October 5, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | RC Circuit Pro | PID Command & Ctrl |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/rc-circuit-pro/id824145786/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 4 months** | Every 19 months |
| Monetization | Paid | **Free** |
| Size | 17 MB | 2 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [Associated Industries China, Inc.](https://appshunter.io/developer/1495152287) |

## What reviewers say

### RC Circuit Pro

[App page](https://appshunter.io/ios/app/rc-circuit-pro/id824145786)

Calculate RC charging and filter circuits with ease. This tool helps hobbyists and engineers determine time constants, component values, and cutoff frequencies. Save and export your circuit data for further analysis.

**Highlights:** Calculate time constant, Find component values (R, C), Determine voltage at time t, Calculate cutoff frequency, Save data to CSV, Export data via AirDrop/iCloud Drive

**In-app purchases:** none


### PID Command & Ctrl

[App page](https://appshunter.io/ios/app/pid-command-and-ctrl/id1495152288)

This utility app enables simple and intuitive control, configuration, and testing of AG Neovo Public Information Displays on your network. It also facilitates the rapid creation of video walls without requiring third-party hardware.

**Highlights:** Remote display management, OSD settings control, Wi-Fi or LAN connectivity, Create up to 5x5 video walls, Quick video wall configuration, Supports specific AG Neovo display models

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RC Circuit Pro free?

RC Circuit Pro costs $0.99, with no in-app purchases.

### Is PID Command & Ctrl free?

PID Command & Ctrl is free to download, with no in-app purchases.

### Do RC Circuit Pro or PID Command & Ctrl have ads?

Neither RC Circuit Pro nor PID Command & Ctrl shows ads.

### Which is updated more often, RC Circuit Pro or PID Command & Ctrl?

RC Circuit Pro ships an update every 4 months, and PID Command & Ctrl every 19 months. Most recently, RC Circuit Pro was updated on October 5, 2026 and PID Command & Ctrl on September 23, 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.*