# electronics filter toolkit vs Phase Calc

The clearest difference is in-app purchases: Phase Calc at none against electronics filter toolkit's 1. electronics filter toolkit's advantage is device support and iOS requirement (13.0 vs 17.0). On price there is nothing between them.

Both are free to download. electronics filter toolkit sells 1 one-off in-app purchase. Phase Calc asks for nothing beyond the download.

## The numbers

| Metric | electronics filter toolkit | Phase Calc |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | Every 9 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 13 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Anas Abubakar](https://appshunter.io/developer/1581534101) | [Donnie Herman](https://appshunter.io/developer/837266303) |

## What reviewers say

### electronics filter toolkit

[App page](https://appshunter.io/ios/app/electronics-filter-toolkit/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 |


### Phase Calc

[App page](https://appshunter.io/ios/app/phase-calc-lite/id6760266074)

**In-app purchases:** none


## Frequently asked questions

### Is electronics filter toolkit free?

electronics filter toolkit is free to download, with in-app purchases available.

### Is Phase Calc free?

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

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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.*