# RC Circuit Pro vs Alarcauto

The clearest difference is price: Alarcauto at Free against RC Circuit Pro's $0.99. RC Circuit Pro's advantage is iOS requirement (9.0 vs 14.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Alarcauto 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, Alarcauto every 3 months. The most recent releases landed on October 23, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | RC Circuit Pro | Alarcauto |
| --- | --- | --- |
| 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 | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 17 MB | 5 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [internet cuality solutions SL](https://appshunter.io/developer/1653179954) |

## 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


### Alarcauto

[App page](https://appshunter.io/ios/app/alarcauto/id1669880851)

**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 Alarcauto free?

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

### Do RC Circuit Pro or Alarcauto have ads?

Neither RC Circuit Pro nor Alarcauto shows ads.

### Which is updated more often, RC Circuit Pro or Alarcauto?

RC Circuit Pro ships an update every 4 months, and Alarcauto every 3 months. Most recently, RC Circuit Pro was updated on October 23, 2026 and Alarcauto on October 4, 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.*