# Control Systems Engineering vs Ohmie

The clearest difference is ads: Control Systems Engineering at none against Ohmie's shown. Control Systems Engineering also leads on iOS requirement (17.0 vs 26.2). Ohmie's advantage is update cadence (every 3 days vs every 3 months) and chart position (#76 vs unranked). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Control Systems Engineering sells 6 in-app purchases, starting at $9.99 per month and Ohmie sells 4 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

Control Systems Engineering ships an update every 3 months, Ohmie every 3 days. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Control Systems Engineering | Ohmie |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (176 ratings)](https://appshunter.io/ios/app/ohmie-learn-electronics/id6779694265/reviews)** |
| Number of ratings | — | **176** |
| Positive reviews | — | 61.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | — | Freemium |
| Best chart rank | — | **#76** |
| Size | 18 MB | 645 MB |
| Requires iOS | **17.0** | 26.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) | [OHMIE LLC](https://appshunter.io/developer/1889012870) |

## What reviewers say

### Control Systems Engineering

[App page](https://appshunter.io/ios/app/control-systems-engineering/id6739731886)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $9.99 | per month |
| 6 Months | $19.99 | per 6 months |
| 1 Year | $29.99 | per year |
| 1500 | $0.99 | one-time |
| 3500 | $1.99 | one-time |
| 9000 | $3.99 | one-time |


### Ohmie

[App page](https://appshunter.io/ios/app/ohmie-learn-electronics/id6779694265)

**Currently charting:** #76 Top Free · Education (US App Store)

Learn electronics through engaging, game-like lessons and interactive circuit simulations. Master concepts from basic circuits to embedded systems and robotics with bite-sized daily practice. Progress is tracked on your device with no ads or accounts required.

**Highlights:** Live circuit simulations, Build schematics with real components, Interactive problem-solving lessons, Covers circuits, op-amps, embedded systems, and robotics, Gamified learning with XP and streaks, Progress saved locally, no account needed, Ad-free and tracking-free experience

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ohmie Pro | $7.99 | per month |
| Ohmie Pro Yearly Saver | $19.99 | per year |
| Ohmie Pro | $29.99 | per year |
| Ohmie Pro Annual | $29.99 | per year |


## Frequently asked questions

### Is Control Systems Engineering free?

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

### Is Ohmie free?

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

### Do Control Systems Engineering or Ohmie have ads?

Ohmie shows ads; Control Systems Engineering does not.

### Which is updated more often, Control Systems Engineering or Ohmie?

Control Systems Engineering ships an update every 3 months, and Ohmie every 3 days. Most recently, Control Systems Engineering was updated on October 2, 2026 and Ohmie on October 10, 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.*