RCircuitCalc vs CircuitShepherd
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RCircuitCalc
This app helps engineers and students design electrical and electronic circuits by calculating standard resistance values based on E-series numbers. It supports various circuit types, including voltage dividers, series, parallel, and combination circuits, and can also calculate current and power for each resistor.
- Calculates standard resistance values
- Supports voltage dividers, series, parallel, and combination circuits
- Calculates current and power for resistors
- Outputs resistance values based on E-series numbers (E6, E12, E24, E48, E96)
- Calculations based on input voltage, output voltage, current, and resistance ratio
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This application is intend for engineers and students who are wasting time for designing electric and electronic circuits. The standard resistance values based on E-series numbers are outputted in inputting necessary conditions such as input voltage, output voltage, current and so on. Features The calculable circuits are as follows: - Voltage Dividers (Inputting output voltage or resistance ratio) - Series Circuits - Parallel Circuits - Combination Circuits In the Voltage Dividers, resistance values are calculated in entering input voltage, output voltage or resistance ratio, and current into input boxes, besides, the most suitable resistance values are calculated in selecting priority whether Normal or Vout. In the Series Circuits, Parallel Circuits and Combination Circuits, divided resistance values are calculated in entering a combined resistance value into an input box. Calculated resistance values are displayed with the following E-series number specified either. E6, E12, E24, E48, E96 This application is able to calculate current and power of each resistor on calculated resistance values. Attention Because standard resistors are used and precision of calculation is ensured, the following restrictions are set up. - Range of resistance value: 1Ω ~ 10MΩ - Range of resistance ratio: 0.1 ~ 10
CircuitShepherd
Automate electronic circuit design with AI-driven parameter optimization. Define schematics and design goals, and the software finds optimal part values in real-time. Save time on calculations and iterations with this intuitive tool.
- Automated parameter optimization
- AI-driven circuit engineering
- Real-time design goal finding
- Intuitive user interface
- Schematic definition
- Part value calculation
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CircuitShepherd provides you with analog-design superpowers by doing automated parameter optimization it in realtime! It's a novel Electronic Design Automation software for AI driven electronics circuit engineering. You define an arbitrary schematic including specific design goals and CircuitShepherd will find the right part values for you. This is achieved by combining traditional circuit simulation techniques with AI driven parameter estimation algorithms and finally a simple and intuitive user interface. It’s easy to learn, fast to use and it will save you a lot of time by automating your daily calculation and iteration tasks. CircuitShepherd is free to use immediately (with very basic features). The full version with all features enabled is available via in-app purchase (subscription-based). Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.circuitshepherd.com/privacy-policy-iOS.html
Screenshots
Verdict
The clearest difference is price: CircuitShepherd at Free against RCircuitCalc's $1.99. CircuitShepherd also leads on rating (1.5 vs 1.0) and update cadence (every 3 weeks vs every 17 months). RCircuitCalc's advantage is in-app purchases (none vs 1). On review sentiment, ratings volume, ads 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
CircuitShepherd is free to download; RCircuitCalc costs $1.99 up front. CircuitShepherd sells 1 in-app purchase, starting at $6.99 per month. RCircuitCalc asks for nothing beyond the download.
CircuitShepherd holds the better App Store score, 1.5 against 1.0. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews split almost evenly too, at 0% and 0% positive.
RCircuitCalc ships an update every 17 months, CircuitShepherd every 3 weeks. The most recent releases landed on June 8, 2026 and June 4, 2026 respectively.
| Parameter | RCircuitCalc | CircuitShepherd |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 1.0 (5 ratings) | 1.5 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 5 — better | 2 |
| Update frequency | Every 17 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.6 — better | 14.0 |
| Further details — not scored | ||
| Size | 7 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | TAKAHIKO FUKUYAMA | Josef Woess |
Customer experience
RCircuitCalc
CircuitShepherd
In-app purchases
RCircuitCalc
No in-app purchases
CircuitShepherd
- full version$6.991 Month
Questions
Is RCircuitCalc free?
Is CircuitShepherd free?
Which has better reviews, RCircuitCalc or CircuitShepherd?
Do RCircuitCalc or CircuitShepherd have ads?
Which is updated more often, RCircuitCalc or CircuitShepherd?
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