# Learn Control Systems vs Root Locus Plotter

The clearest difference is in-app purchases: Root Locus Plotter at none against Learn Control Systems's 1. Root Locus Plotter also leads on update cadence (every 3 months vs every 16 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Learn Control Systems sells 1 one-off in-app purchase. Root Locus Plotter asks for nothing beyond the download.

Learn Control Systems ships an update every 16 months, Root Locus Plotter every 3 months. The most recent releases landed on September 9, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Learn Control Systems | Root Locus Plotter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 months** |
| Size | 28 MB | 30 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ghumman Tech LLC](https://appshunter.io/developer/1671347750) | [Sthefano Schiavon](https://appshunter.io/developer/1882733645) |

## What reviewers say

### Learn Control Systems

[App page](https://appshunter.io/ios/app/learn-control-systems/id6446431258)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $9.99 | one-time |


### Root Locus Plotter

[App page](https://appshunter.io/ios/app/root-locus-plotter/id6760122394)

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

**In-app purchases:** none


## Frequently asked questions

### Is Learn Control Systems free?

Learn Control Systems is free to download, with in-app purchases available.

### Is Root Locus Plotter free?

Root Locus Plotter is free to download, with no in-app purchases.

### Do Learn Control Systems or Root Locus Plotter have ads?

Neither Learn Control Systems nor Root Locus Plotter shows ads.

### Which is updated more often, Learn Control Systems or Root Locus Plotter?

Learn Control Systems ships an update every 16 months, and Root Locus Plotter every 3 months. Most recently, Learn Control Systems was updated on September 9, 2026 and Root Locus Plotter on October 3, 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.*