# Two Thirty Volts vs CurioSeed

The clearest difference is in-app purchases: Two Thirty Volts at none against CurioSeed's 1. Two Thirty Volts also leads on iOS requirement (8.0 vs 26.5). CurioSeed's advantage is update cadence (every 4 days vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. CurioSeed sells 1 one-off in-app purchase. Two Thirty Volts asks for nothing beyond the download.

Two Thirty Volts ships an update every 6 months, CurioSeed every 4 days. The most recent releases landed on November 1, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Two Thirty Volts | CurioSeed |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/two-thirty-volts/id502514595/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 6 MB | 10 MB |
| Requires iOS | **8.0** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [The Electrical Safety Council](https://appshunter.io/developer/477735098) | [耀民 王](https://appshunter.io/developer/1789459947) |

## What reviewers say

### Two Thirty Volts

[App page](https://appshunter.io/ios/app/two-thirty-volts/id502514595)

Test your knowledge of electricity with quizzes and revision notes tailored for secondary science students. Earn reward badges for perfect scores and watch videos on electrical safety and careers. Supplement your curriculum with this educational resource.

**Highlights:** Electricity quizzes, Revision notes, Reward badges, Electrical safety videos, Career information, Curriculum supplement

**Features:** macOS Compatibility

**In-app purchases:** none


### CurioSeed

[App page](https://appshunter.io/ios/app/curioseed-how-things-work/id6809521678)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 20 Photo Recognitions | $2.99 | one-time |


## Frequently asked questions

### Is Two Thirty Volts free?

Two Thirty Volts is free to download, with no in-app purchases.

### Is CurioSeed free?

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

### Do Two Thirty Volts or CurioSeed have ads?

Neither Two Thirty Volts nor CurioSeed shows ads.

### Which is updated more often, Two Thirty Volts or CurioSeed?

Two Thirty Volts ships an update every 6 months, and CurioSeed every 4 days. Most recently, Two Thirty Volts was updated on November 1, 2026 and CurioSeed on November 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.*