# Thorium vs Boom Cards

The clearest difference is rating: Thorium at 4.5 against Boom Cards's 3.3. Thorium also leads on review sentiment (67% vs 41%) and iOS requirement (8.2 vs 13.0). Boom Cards's advantage is ratings volume (6 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Thorium holds the better App Store score, 4.5 against 3.3. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews point the same way: 67% of Thorium's written reviews are positive against 41% of Boom Cards's.

Thorium ships an update every 2 months, Boom Cards every 3 months. The most recent releases landed on October 11, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Thorium | Boom Cards |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/thorium/id653964281/reviews)** | [3.3 (6 ratings)](https://appshunter.io/ios/app/boom-cards/id1041141473/reviews) |
| Number of ratings | 2 | **6** |
| Positive reviews | **66.7% of reviews** | 40.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 1 MB | 34 MB |
| Requires iOS | **8.2** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YoctoPlay](https://appshunter.io/developer/337781260) | [Omega Labs Inc.](https://appshunter.io/developer/567183613) |

## What reviewers say

### Thorium

[App page](https://appshunter.io/ios/app/thorium/id653964281)

Explore the potential of thorium as an energy source. This educational app uses videos to explain nuclear fission and contrast thorium-based reactors with current energy technologies like solar and wind.

**Highlights:** Thorium energy transformation explained, Nuclear fission concepts, Molten Salt Reactor (MSR) comparison, Contrast with current energy sources, Educational video series

**Features:** macOS Compatibility

**In-app purchases:** none


### Boom Cards

[App page](https://appshunter.io/ios/app/boom-cards/id1041141473)

This app allows students to play interactive, self-grading digital flashcards on their iOS devices. It syncs with a teacher's account, enabling assignment of activities and performance tracking. Millions of educators trust this platform for engaging learning experiences.

**Highlights:** Self-grading digital flashcards, Synchronizes with Boom Classroom, Assign materials to classes, Review student performance, Access over 500,000 decks, Detailed student reports

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Thorium free?

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

### Is Boom Cards free?

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

### Which has better reviews, Thorium or Boom Cards?

Thorium is rated higher. Thorium averages 4.5 out of 5 from 2 ratings, while Boom Cards averages 3.3 from 6 ratings.

### Do Thorium or Boom Cards have ads?

Neither Thorium nor Boom Cards shows ads.

### Which is updated more often, Thorium or Boom Cards?

Thorium ships an update every 2 months, and Boom Cards every 3 months. Most recently, Thorium was updated on October 11, 2026 and Boom Cards on October 23, 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.*