# Impedance Calculators vs RVMfs

The clearest difference is in-app purchases: RVMfs at none against Impedance Calculators's 1. RVMfs also leads on ads (none vs shown) and iOS requirement (13.0 vs 16.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Impedance Calculators sells 1 one-off in-app purchase. RVMfs asks for nothing beyond the download.

Impedance Calculators ships an update every 21 months, RVMfs every 14 months. The most recent releases landed on October 23, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Impedance Calculators | RVMfs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (13 ratings)](https://appshunter.io/ios/app/impedance-calculators/id1571901358/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 21 months | **Every 14 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 8 MB | 196 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Testpress Tech Labs LLP](https://appshunter.io/developer/1235683817) |

## What reviewers say

### Impedance Calculators

[App page](https://appshunter.io/ios/app/impedance-calculators/id1571901358)

This app provides 8 calculators for electrical impedance calculations. It covers various combinations of resistors, inductors, and capacitors in series and parallel circuits, offering formulas and circuit diagrams.

**Highlights:** Series impedance calculator, Parallel impedance calculator, R, L, & C circuit calculations, Includes formulas, Circuit diagrams provided, 8 distinct calculators

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### RVMfs

[App page](https://appshunter.io/ios/app/rvmfs/id6450347564)

This app offers comprehensive courses in finance, including CFA preparation, financial modeling, and investment banking. Learn financial analytics with Python and SQL, and prepare for Microsoft certifications. Access educational content designed for aspiring financial professionals.

**Highlights:** CFA preparation courses, Financial modeling training, Investment banking courses, Financial analytics with Python & SQL, Microsoft certification preparation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Impedance Calculators free?

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

### Is RVMfs free?

RVMfs is free to download, with no in-app purchases.

### Do Impedance Calculators or RVMfs have ads?

Impedance Calculators shows ads; RVMfs does not.

### Which is updated more often, Impedance Calculators or RVMfs?

Impedance Calculators ships an update every 21 months, and RVMfs every 14 months. Most recently, Impedance Calculators was updated on October 23, 2026 and RVMfs on October 20, 2026.

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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.*