# Resistor Calculator Lite vs RC Circuit

The clearest difference is in-app purchases: Resistor Calculator Lite at none against RC Circuit's 1. Resistor Calculator Lite also leads on update cadence (every 6 weeks vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. RC Circuit sells 1 one-off in-app purchase. Resistor Calculator Lite asks for nothing beyond the download.

Resistor Calculator Lite ships an update every 6 weeks, RC Circuit every 6 months. The most recent releases landed on October 29, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Resistor Calculator Lite | RC Circuit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (5 ratings)](https://appshunter.io/ios/app/rc-circuit/id824460716/reviews)** |
| Number of ratings | — | **5** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 6 months |
| Monetization | — | Free |
| Size | 8 MB | 16 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Marck Apps](https://appshunter.io/developer/561157787) | [Siu Yuen Ho](https://appshunter.io/developer/814088527) |

## What reviewers say

### Resistor Calculator Lite

[App page](https://appshunter.io/ios/app/resistor-calculator-lite/id567034416)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### RC Circuit

[App page](https://appshunter.io/ios/app/rc-circuit/id824460716)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro features | $0.99 | one-time |


## Frequently asked questions

### Is Resistor Calculator Lite free?

Resistor Calculator Lite is free to download, with no in-app purchases.

### Is RC Circuit free?

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

### Do Resistor Calculator Lite or RC Circuit have ads?

Neither Resistor Calculator Lite nor RC Circuit shows ads.

### Which is updated more often, Resistor Calculator Lite or RC Circuit?

Resistor Calculator Lite ships an update every 6 weeks, and RC Circuit every 6 months. Most recently, Resistor Calculator Lite was updated on October 29, 2026 and RC Circuit on November 4, 2026.

---

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