# RC Circuit

> Tool for calculating RC circuit parameters and behavior. (iPhone/iPad app by Siu Yuen Ho.)

- Source: https://appshunter.io/ios/app/rc-circuit/id824460716 (this page in markdown: same URL + `.md`)
- Developer: [Siu Yuen Ho](https://appshunter.io/developer/814088527)
- Category: Utilities, Education
- Price: Free with in-app purchases
- Rating: 4.80/5 from 5 App Store ratings
- Age rating: 4+
- Requires: iOS 12.0 · 16 MB
- Languages: French (France), German (Germany), American English, Chinese (Simplified, China), Chinese (Traditional, Taiwan), European Spanish, Italian, Japanese, European Portuguese
- Released: 2014-02-26
- Data updated: 2026-08-28
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/rc-circuit/id824460716/reviews.md

## What is RC Circuit?

This app is used to calculate the RC charging and RC filter circuit. It is suitable for hobbyist or electronic engineer.

Features
* Calculate time constant from R, C
* Find component value R,C from time constant
* Get voltage at time t in RC charging / discharging
* Calculate cutoff frequency by R, C
* Find component value R,C from cutoff frequency
* Save data to CSV files
* Upload CSV via AirDrop / iCloud Drive
* Support English, Traditional Chinese,  Simplified Chinese, German, French,  Italian, Spanish, Portuguese, Japanese

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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



## Frequently asked questions about RC Circuit

### What is RC Circuit used for?

RC Circuit is used to calculate RC charging and RC filter circuits. It helps users determine time constants, cutoff frequencies, and voltage at specific times for these circuits.

### Who is RC Circuit designed for?

This application is suitable for hobbyists or electronic engineers who require tools for analyzing and calculating parameters related to RC circuits.

### Can I save my calculations with RC Circuit?

Yes, RC Circuit allows you to save your data to CSV files. You can then upload these files via AirDrop or iCloud Drive for further use or sharing.

### What languages does RC Circuit support?

RC Circuit supports multiple languages including English, Traditional Chinese, Simplified Chinese, German, French, Italian, Spanish, Portuguese, and Japanese.

### Is RC Circuit free to use?

Yes, RC Circuit is available for free. It also has in-app purchases, but the core functionality is accessible without cost.

### Does RC Circuit have ads?

No, RC Circuit does not contain advertisements. Users can enjoy an ad-free experience while utilizing its features.

### What devices is RC Circuit compatible with?

RC Circuit is compatible with iPhone, iPad, and iPod devices, running on iOS.

### How often is RC Circuit updated?

The latest version of RC Circuit was released on March 25, 2024. Updates are provided periodically to improve functionality and compatibility.

## Version history (last 5 releases)

### 2.8.0 — 2024-03-25

Fix minor bugs

### 2.7.5 — 2021-05-14

Fix minor bugs

### 2.7.0 — 2021-01-06

Fix minor bugs

### 2.5.0 — 2020-02-23

Fix minor bugs

### 2.4.0 — 2019-12-29

- Support dark mode
- Fix minor bugs

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## More apps by Siu Yuen Ho

- [Easy Ohm's Law](https://appshunter.io/ios/app/easy-ohms-law/id814088524)
- [RC Circuit Pro](https://appshunter.io/ios/app/rc-circuit-pro/id824145786)
- [Resistor Tools Pro](https://appshunter.io/ios/app/resistor-tools-pro/id825620924)
- [Resistor Tools](https://appshunter.io/ios/app/resistor-tools/id826045228)
- [Timer 555 Calculator Pro](https://appshunter.io/ios/app/timer-555-calculator-pro/id833443125)

All apps by Siu Yuen Ho: https://appshunter.io/developer/814088527

## Related topics

[siu yuen ho](https://appshunter.io/ios/topics/siu-yuen-ho)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*