# ARK vs Ohmie

The clearest difference is in-app purchases: ARK at none against Ohmie's 5. ARK also leads on ads (none vs shown) and review sentiment (83% vs 56%). Ohmie's advantage is update cadence (every 3 days vs fortnightly) and ratings volume (291 vs 11). On price, rating and device support there is nothing between them.

Both are free to download. Ohmie sells 5 in-app purchases, starting at $7.99 per month. ARK asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for ARK against 4.5 for Ohmie. That said, the two scores are not equally well evidenced: Ohmie has 291 ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 83% of ARK's written reviews are positive against 56% of Ohmie's.

ARK ships an update fortnightly, Ohmie every 3 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | ARK | Ohmie |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (11 ratings)](https://appshunter.io/ios/app/ark-community-hub-for-stem/id6737204004/reviews)** | [4.5 (291 ratings)](https://appshunter.io/ios/app/ohmie-learn-electronics/id6779694265/reviews) |
| Number of ratings | 11 | **291** |
| Positive reviews | **83.3% of reviews** | 56.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | **Free** | Freemium |
| Best chart rank | — | **#152** |
| Size | 75 MB | 752 MB |
| Requires iOS | **15.1** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [IMMACULATA TECHNOLOGIES LLC](https://appshunter.io/developer/1775240149) | [OHMIE LLC](https://appshunter.io/developer/1889012870) |

## What reviewers say

### ARK

[App page](https://appshunter.io/ios/app/ark-community-hub-for-stem/id6737204004)

This platform connects STEM enthusiasts, innovators, and educators globally. Share ideas, showcase projects, and collaborate with experts. Buy and sell creations in an integrated marketplace to foster innovation and learning.

**Highlights:** Connect with STEM enthusiasts, Collaborate on projects, Showcase innovations, Buy and sell creations, Access learning resources, Join discussions on tech topics

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

**In-app purchases:** none


### Ohmie

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

**Currently charting:** #152 Top Grossing · Education, #161 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 (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ohmie Pro | $7.99 | per month |
| Ohmie Pro Yearly Saver | $19.99 | per year |
| Ohmie Pro Annual | $29.99 | per year |
| Ohmie Pro | $29.99 | per year |
| Ohmie Pro | $49.99 | per year |


## Frequently asked questions

### Is ARK free?

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

### Is Ohmie free?

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

### Which has better reviews, ARK or Ohmie?

ARK is rated higher. ARK averages 4.6 out of 5 from 11 ratings, while Ohmie averages 4.5 from 291 ratings.

### Do ARK or Ohmie have ads?

Ohmie shows ads; ARK does not.

### Which is updated more often, ARK or Ohmie?

ARK ships an update fortnightly, and Ohmie every 3 days. Most recently, ARK was updated on October 25, 2026 and Ohmie on October 25, 2026.

---

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