# Impedance Calculators vs Filtroscope

The clearest difference is in-app purchases: Filtroscope at none against Impedance Calculators's 1. Filtroscope also leads on ads (none vs shown) and update cadence (daily vs every 21 months). On price, device support and iOS requirement there is nothing between them.

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

Impedance Calculators ships an update every 21 months, Filtroscope daily. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Impedance Calculators | Filtroscope |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (13 ratings)](https://appshunter.io/ios/app/impedance-calculators/id1571901358/reviews)** | — |
| Number of ratings | **13** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 21 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 12 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Thomas Roy](https://appshunter.io/developer/6780095310) |

## 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 |


### Filtroscope

[App page](https://appshunter.io/ios/app/filtroscope/id6780152202)

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

**In-app purchases:** none


## Frequently asked questions

### Is Impedance Calculators free?

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

### Is Filtroscope free?

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

### Do Impedance Calculators or Filtroscope have ads?

Impedance Calculators shows ads; Filtroscope does not.

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

Impedance Calculators ships an update every 21 months, and Filtroscope daily. Most recently, Impedance Calculators was updated on October 23, 2026 and Filtroscope on October 25, 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.*