LED Calc. vs RC Circuit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LED Calc.
This application assists in designing electronic circuits by calculating the necessary resistor values for LEDs. It simplifies the process of determining the correct components for your LED projects.
- Resistor value calculation
- LED circuit design assistance
- Component value determination
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This app calculates the value of resistor, when designing a circuit using LED.
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
Screenshots
Verdict
The clearest difference is rating: RC Circuit at 4.8 against LED Calc.'s 1.0. RC Circuit also leads on ads (none vs shown) and ratings volume (5 vs 1). LED Calc.'s advantage is in-app purchases (none vs 1). On price, update cadence, device support and iOS requirement 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. LED Calc. asks for nothing beyond the download.
RC Circuit holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: RC Circuit has 5 ratings behind it against 1, so its average is the more settled of the two.
LED Calc. ships an update every 10 months, RC Circuit every 6 months. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.
| Parameter | LED Calc. | RC Circuit |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 4.8 (5 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 10 months | Every 6 months — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 17 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Jibiki Works | Siu Yuen Ho |
Customer experience
LED Calc.
RC Circuit
In-app purchases
LED Calc.
No in-app purchases
RC Circuit
- Unlock Pro features$0.99
Questions
Is LED Calc. free?
Is RC Circuit free?
Which has better reviews, LED Calc. or RC Circuit?
Do LED Calc. or RC Circuit have ads?
Which is updated more often, LED Calc. or RC Circuit?
Other comparisons
