# RC Circuit vs Electronic Circuits Calc Pro

The clearest difference is price: RC Circuit at Free against Electronic Circuits Calc Pro's $4.99. RC Circuit also leads on iOS requirement (12.0 vs 16.0). Electronic Circuits Calc Pro's advantage is in-app purchases (none vs 1) and update cadence (every 6 weeks vs every 6 months). On ads and device support there is nothing between them.

RC Circuit is free to download; Electronic Circuits Calc Pro costs $4.99 up front. RC Circuit sells 1 one-off in-app purchase. Electronic Circuits Calc Pro asks for nothing beyond the download.

RC Circuit ships an update every 6 months, Electronic Circuits Calc Pro every 6 weeks. The most recent releases landed on September 24, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | RC Circuit | Electronic Circuits Calc Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/rc-circuit/id824460716/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 weeks** |
| Monetization | Free | — |
| Best chart rank | — | **#193** |
| Size | 16 MB | 19 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### RC Circuit

[App page](https://appshunter.io/ios/app/rc-circuit/id824460716)

Calculate RC charging and filter circuits, including time constants and cutoff frequencies. Find component values from these parameters or get voltage at specific times. Save and share data easily.

**Highlights:** Calculate time constant, Find component values, Get voltage at time t, Calculate cutoff frequency, Save data to CSV, Upload CSV via AirDrop/iCloud Drive, Multi-language support

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro features | $0.99 | one-time |


### Electronic Circuits Calc Pro

[App page](https://appshunter.io/ios/app/electronic-circuits-calc-pro/id1658493129)

**Currently charting:** #193 Top Paid · Utilities (US App Store)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RC Circuit free?

RC Circuit is free to download, with in-app purchases available.

### Is Electronic Circuits Calc Pro free?

Electronic Circuits Calc Pro costs $4.99, with no in-app purchases.

### Do RC Circuit or Electronic Circuits Calc Pro have ads?

Neither RC Circuit nor Electronic Circuits Calc Pro shows ads.

### Which is updated more often, RC Circuit or Electronic Circuits Calc Pro?

RC Circuit ships an update every 6 months, and Electronic Circuits Calc Pro every 6 weeks. Most recently, RC Circuit was updated on September 24, 2026 and Electronic Circuits Calc Pro on September 16, 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.*