# electronics filter toolkit vs Smith Chart Touch

The clearest difference is in-app purchases: Smith Chart Touch at none against electronics filter toolkit's 1. Smith Chart Touch also leads on ads (none vs shown) and update cadence (every 3 months vs every 9 months). electronics filter toolkit's advantage is iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

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

electronics filter toolkit ships an update every 9 months, Smith Chart Touch every 3 months. The most recent releases landed on September 9, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | electronics filter toolkit | Smith Chart Touch |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 3 months** |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 22 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anas Abubakar](https://appshunter.io/developer/1581534101) | [Sthefano Schiavon](https://appshunter.io/developer/1882733645) |

## 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 |


### Smith Chart Touch

[App page](https://appshunter.io/ios/app/smith-chart-touch/id6760685457)

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

**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 Smith Chart Touch free?

Smith Chart Touch is free to download, with no in-app purchases.

### Do electronics filter toolkit or Smith Chart Touch have ads?

electronics filter toolkit shows ads; Smith Chart Touch does not.

### Which is updated more often, electronics filter toolkit or Smith Chart Touch?

electronics filter toolkit ships an update every 9 months, and Smith Chart Touch every 3 months. Most recently, electronics filter toolkit was updated on September 9, 2026 and Smith Chart Touch on September 14, 2026.

---

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