RC Circuit vs Simple Circuit Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RC Circuit
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.
- 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
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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
Simple Circuit Builder
This virtual lab offers a hands-on experience for learning about resistors and circuit resistance. Easily build and test series and parallel circuits, measure voltage and current, and understand the impact of component changes in real-time.
- Build circuits with up to eight components
- Five component types
- Virtual volt and amp meters
- Adjustable resistor and voltage values
- Real-time circuit analysis
- Demonstrates 'Opens' and 'Shorts'
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Description This is the BEST app to learn about Resistors and Circuit Resistance (Equivalent Resistance). This virtual lab provides an excellent environment for anyone who is interested in understanding series and parallel resistors, learning how to measure voltages across resistors, current through series and parallel circuits and solving simple circuits. Features - VERY SIMPLE and EASY TO USE, with up to eight component sections. - Component sections can easily be configured from five different types. - VIRTUAL "Hands On" experience using volt and amp meters. - Resistor values can easily be changed with a picker, keypad or using randomize button. - Circuit voltage can easily be changed from 1 to 1000 volts with a picker or a keypad. - The "Basics" screen make this app unique for the simplicity and speed of seeing the effects of "Opens" (resistor component with infinite resistance) and "Shorts" (resistor component with zero resistance). - FREE and NO ADVERTISEMENTS. - The circuit is always "LIVE" and immediately shows voltage, current and circuit resistance with any changes made to the circuit.
Screenshots
Verdict
The clearest difference is rating: RC Circuit at 4.8 against Simple Circuit Builder's 4.0. RC Circuit also leads on iOS requirement (12.0 vs 14.0). Simple Circuit Builder's advantage is in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 6 months). On price, ads, monetization model and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. RC Circuit sells 1 one-off in-app purchase. Simple Circuit Builder asks for nothing beyond the download.
RC Circuit holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Simple Circuit Builder has 28 ratings behind it against 5, so its average is the more settled of the two.
RC Circuit ships an update every 6 months, Simple Circuit Builder every 3 weeks. The most recent releases landed on September 24, 2026 and June 4, 2026 respectively.
| Parameter | RC Circuit | Simple Circuit Builder |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | 4.0 (28 ratings) |
| Positive reviews | — | 52.6% of reviews |
| Number of ratings | 5 | 28 — better |
| Update frequency | Every 6 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 16 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | David White |
Customer experience
RC Circuit
Simple Circuit Builder
In-app purchases
RC Circuit
- Unlock Pro features$0.99
Simple Circuit Builder
No in-app purchases
Questions
Is RC Circuit free?
Is Simple Circuit Builder free?
Which has better reviews, RC Circuit or Simple Circuit Builder?
Do RC Circuit or Simple Circuit Builder have ads?
Which is updated more often, RC Circuit or Simple Circuit Builder?
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