RC Circuit

Peter Ho Tools In-app purchases Contains ads

List R, C making desire time constant / cutoff frequency

Rating: 3.5; 254 ratings
Downloads: 31.4K+; on Google Play
Price: Free; In-app purchases
Updated: Jul 26; 2026 · v3.0.20

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Screenshots

About RC Circuit

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

Features:
1. Calculate time constant by R and C
2. Calculate between time constant and % of charging
3. Calculate cutoff frequency of low-pass filter/ high-pass filter by resistor and capacitor values
4. To find out combinations of resistance and capacitance making a desired time constant
5. To find out combinations of resistance and capacitance making a desired cutoff frequency
6. Save all combinations in a CSV (Excel) file

Features in PRO version only:
1. No Ads
2. No limitation

Note :
1. For those who need support please email to the designated email.
Do NOT use either the feedback area to write questions, it is not appropriate and that is not guaranteed that can read them.

What’s new

Version 3.0.20 · Updated July 26, 2026

3.0.20 - Fix minor bugs

User reviews

Mr. Hmm

Wow

Rakesh Shah

Rotator/pf,. Data

Rasdi Armadi

Thank you,Mr.Ho your app is very useful for me to make my own headphone amplifier

Boo Marek

Good one

Dustin Stripling

My bigs bigger

Rakesh Malviya

Good

App details

RC Circuit is a free Tools app for Android with 10,000+ installs on Google Play and a 3.5/5 average rating from 254 ratings. It was released on January 6, 2014 and last updated on July 26, 2026. It's developed by Peter Ho. It requires Android 6.0 or later. The app contains ads and offers in-app purchases.

Category: Tools
Rating: 3.5 / 5 (254)
Installs: 31,421
In-app purchases: Yes
Ads: Contains ads
Version: 3.0.20
Size: 2.3M
Requires Android: 6.0
Content rating: Everyone
Released: January 6, 2014
Last updated: July 26, 2026
Developer: Peter Ho

View on Google Play

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