DigiCompCalc vs RC Circuit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DigiCompCalc
This utility app simplifies digital power compensator coefficient calculations. It allows users to input data and obtain results directly on their mobile device, eliminating the need for complex desktop software. Results can be emailed for easy sharing.
- Calculate coefficients from analog compensator values
- Calculate coefficients directly using poles and zeros
- Email results
- Remembers last calculated variables
- Dark Mode support
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Are you tired of using Excel or Matlab to calculate the coefficients for your digital power compensator? Do you want to do the calculations in the palm of your hand, just by entering the pertinent data? Then the Digital Compensator Calculator (DigiCompCalc) is for you! You no longer have to buy Matlab for just a few simple digital filter calculations. For use with Type II and Type III error amplifiers. Features: • Free! No Ads! • Calculate coefficients using the values from an analog compensator • Calculate coefficients directly using poles and zeros • Email results to yourself or your firmware designer • Remembers last set of calculated variables • Dark Mode support Install DigiCompCalc today!
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 in-app purchases: DigiCompCalc at none against RC Circuit's 1. DigiCompCalc also leads on rating (5.0 vs 4.8). RC Circuit's advantage is update cadence (every 6 months vs every 68 months) and device support (3 vs 1). On price, ratings volume, ads and monetization model 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. DigiCompCalc asks for nothing beyond the download.
DigiCompCalc holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 2 and 5 respectively.
DigiCompCalc ships an update every 68 months, RC Circuit every 6 months. The most recent releases landed on June 5, 2026 and September 24, 2026 respectively.
| Parameter | DigiCompCalc | RC Circuit |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.8 (5 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 | 5 — better |
| Update frequency | Every 68 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Ernie Zappacosta | Siu Yuen Ho |
Customer experience
DigiCompCalc
RC Circuit
In-app purchases
DigiCompCalc
No in-app purchases
RC Circuit
- Unlock Pro features$0.99
