# Filter Calculator vs Filtroscope

The clearest difference is in-app purchases: Filtroscope at none against Filter Calculator's 1. Filtroscope also leads on ads (none vs shown) and update cadence (daily vs every 5 months). On price, device support and iOS requirement there is nothing between them.

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

Filter Calculator ships an update every 5 months, Filtroscope daily. The most recent releases landed on October 13, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Filter Calculator | Filtroscope |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 53 MB | 12 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anas Abubakar](https://appshunter.io/developer/1581534101) | [Thomas Roy](https://appshunter.io/developer/6780095310) |

## What reviewers say

### Filter Calculator

[App page](https://appshunter.io/ios/app/filter-calculator-electronics/id6754560517)

Design various types of electronic filters, including RC, RL, RLC, and passive crossovers, with customizable orders and alignments. Instantly obtain component values and Bode insights for lab, classroom, or audio projects. Ideal for engineers, hobbyists, and students.

**Highlights:** Design RC, RL, and RLC filters (2nd-7th order), Butterworth & Chebyshev alignments, Passive crossover calculations, Twin-T notch filter design, Instant component values, Bode insights, Offline-friendly dark mode UI

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Pro | $2.99 | 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 Filter Calculator free?

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

### Is Filtroscope free?

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

### Do Filter Calculator or Filtroscope have ads?

Filter Calculator shows ads; Filtroscope does not.

### Which is updated more often, Filter Calculator or Filtroscope?

Filter Calculator ships an update every 5 months, and Filtroscope daily. Most recently, Filter Calculator was updated on October 13, 2026 and Filtroscope on September 18, 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.*