# RCircuitCalc vs Stackd

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.

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.

## The numbers

| Metric | RCircuitCalc | Stackd |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[1.0 (5 ratings)](https://appshunter.io/ios/app/rcircuitcalc/id857468508/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 17 months | — |
| Monetization | Paid | — |
| Size | 7 MB | 5 MB |
| Requires iOS | **13.6** | 18.6 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [TAKAHIKO FUKUYAMA](https://appshunter.io/developer/857468511) | [AYDIN ALI GURSOY](https://appshunter.io/developer/1866430693) |

## What reviewers say

### RCircuitCalc

[App page](https://appshunter.io/ios/app/rcircuitcalc/id857468508)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Stackd

[App page](https://appshunter.io/ios/app/stackd-lego-collection/id6759178924)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| stackd yearly | $39.99 | per year |


## Frequently asked questions

### Is RCircuitCalc free?

RCircuitCalc costs $1.99, with no in-app purchases.

### Is Stackd free?

Stackd is free to download, with in-app purchases available.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*