This app is used to calculate LC resonant circuit. It is suitable for hobbyist or electronic engineers.
Features: 1. Calculate resonant frequency by capacitor and inductor values 2. To find out combinations of capacitance and inductance making a desired resonant frequency 3. Save all combinations in a CSV (Excel) file 4. Use preferred values of capacitors and inductors
Features in PRO version only: 1. selectable preferred value 2. No Ads 3. 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.
Updated on
Jan 14, 2026
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Ratings and reviews
phone_androidPhone
tablet_androidTablet
4.6
313 reviews
5
4
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1
Hap DeSimone
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December 12, 2025
SIMPLE AND FAST to use is the key to productivity. This is a tiny app that bears fruit quickly when you begin to use it faster and faster to find the answers to your tuned circuit design or modification questions. DON'T grumble about it's lack of bells and whistIes until AFTER you have learned to be productive with it. GOOD APP!
Peter Ho
December 13, 2025
Thank you for your best review and encouraging support! I'm very glad that you like the app. Please recommend the app to your friends. Don't hesitate to send me a note at peterhohsy@gmail.com if you have any queries or suggestions.
A Google user
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March 16, 2019
😎When you want to fegure out the frequency of your LC circuit but you don't have a oscilloscope this app might can help you a lot...
5 people found this review helpful
A Google user
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June 16, 2019
I find it excellent, Im a radio engineer and it is just saves time.