RCircuitCalc vs Stackd
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
Stackd
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Stackd is the ultimate portfolio tracker for LEGO collectors and investors. Whether you're building a collection for fun or profit, Stackd helps you understand exactly what your LEGO is worth. TRACK YOUR COLLECTION • Add LEGO sets and minifigures by searching our extensive database • Record purchase prices, quantities, and condition • View beautiful cards showing each item's current value and gain/loss • Organize with filters and sorting options REAL-TIME MARKET VALUES • Get up-to-date market prices powered by BrickEconomy • See how each item's value has changed since you bought it • Track your total portfolio value at a glance PORTFOLIO INSIGHTS (Premium) • View your 30-day performance chart • See your average return percentage across all items • Identify your top gainers and losers • Make smarter buying and selling decisions SIMPLE & BEAUTIFUL • Clean, intuitive interface designed for collectors • Quick search to find any set or minifig instantly • Dark mode support for comfortable viewing FREE TO START • Track up to 10 items completely free • Upgrade to Premium for unlimited items and advanced analytics Whether you're a casual collector tracking your childhood sets or a serious investor monitoring thousands of dollars in LEGO, Stackd gives you the tools to understand and grow your collection's value. Download Stackd today and discover what your LEGO is really worth. Privacy Policy: https://aydingursoy.github.io/stackd/privacy-policy.html Terms of Service: https://aydingursoy.github.io/stackd/terms-of-service.html Support: https://aydingursoy.github.io/stackd/#support
Screenshots
Verdict
The clearest difference is price: Stackd at Free against RCircuitCalc's $1.99. RCircuitCalc's advantage is in-app purchases (none vs 2) and device support.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Stackd is free to download; RCircuitCalc costs $1.99 up front. Stackd sells 2 in-app purchases, starting at $4.99 per month. RCircuitCalc asks for nothing beyond the download.
| Parameter | RCircuitCalc | Stackd |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 1.0 (5 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 17 months | — |
| Ads | No | — |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | — |
| Requires iOS | 13.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 7 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | TAKAHIKO FUKUYAMA | AYDIN ALI GURSOY |
In-app purchases
RCircuitCalc
No in-app purchases
Stackd
- Premium Monthly$4.991 Month
- stackd yearly$39.991 Year









