# Sets Challenge vs Crash Course

The clearest difference is rating: Crash Course at 4.8 against Sets Challenge's 3.0. Crash Course also leads on review sentiment (76% vs 33%) and ratings volume (1.6K vs 4). Sets Challenge's advantage is in-app purchases (none vs 13) and iOS requirement (9.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Crash Course sells 13 one-off in-app purchases. Sets Challenge asks for nothing beyond the download.

Crash Course holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Crash Course has 1.6K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 33% of Sets Challenge's written reviews are positive against 76% of Crash Course's.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 21, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Sets Challenge | Crash Course |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/sets-challenge/id1164791679/reviews) | **[4.8 (1.6K ratings)](https://appshunter.io/ios/app/crash-course-watch-and-study/id1505594172/reviews)** |
| Number of ratings | 4 | **1.6K** |
| Positive reviews | 33.3% of reviews | **75.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 8 MB | 146 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Knowledge Platform Pte Ltd](https://appshunter.io/developer/516535412) | [Complexly LLC](https://appshunter.io/developer/1505594171) |

## What reviewers say

### Sets Challenge

[App page](https://appshunter.io/ios/app/sets-challenge/id1164791679)

Master fundamental set theory concepts through an engaging, multi-level game. Practice operations like intersection, union, and complement individually or with others. Ideal for students and educators, it can even be used for classroom presentations.

**Highlights:** Master set theory basics, Practice intersection, union, complement, Multi-level gameplay, Play solo or in groups, Classroom projector display option

**Features:** macOS Compatibility

**In-app purchases:** none


### Crash Course

[App page](https://appshunter.io/ios/app/crash-course-watch-and-study/id1505594172)

Access thousands of free educational videos covering humanities and sciences. Enhance your learning with supplemental flashcards and quizzes for select courses. Join a community dedicated to making education fun and engaging.

**Highlights:** Thousands of educational videos, High school and college level courses, Humanities and sciences subjects, Supplemental flashcards, Quizzes for review, Community of learners

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Contribute $1.99 | $1.99 | one-time |
| Contribute Tier 1 | $1.99 | one-time |
| Contribute $4.99 | $4.99 | one-time |
| Contribute Tier 2 | $4.99 | one-time |
| Contribute Tier 3 | $9.99 | one-time |
| Contribute Tier 4 | $14.99 | one-time |
| Contribute Tier 5 | $19.99 | one-time |
| Contribute Tier 6 | $24.99 | one-time |
| Contribute Tier 7 | $29.99 | one-time |
| Contribute Tier 8 | $39.99 | one-time |
| Contribute Tier 9 | $49.99 | one-time |
| Contribute Tier 10 | $59.99 | one-time |
| Contribute Tier 14 | $99.99 | one-time |

**What reviewers like**

- 🙌 Helpful for students
- 🎓 Great for learning difficult topics
- 💕 High-quality, engaging content
- 🆓 Completely free to use
- 🙏 Grateful for the free education

**What reviewers complain about**

- 🐛 Bugs and crashes
- 🔍 Limited course selection
- 🔄 Trouble downloading/accessing content
- 🔒 App is marked 17+, should be more accessible

**Reported bugs**

- Courses disappearing after updates
- Search function not working
- Trouble downloading content
- App crashing during use

**Requested features**

- Add math and English courses
- Expand course selection
- Improve search functionality
- Allow offline video viewing
- Add progress tracking and favorites


## Frequently asked questions

### Is Sets Challenge free?

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

### Is Crash Course free?

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

### Which has better reviews, Sets Challenge or Crash Course?

Crash Course is rated higher. Sets Challenge averages 3.0 out of 5 from 4 ratings, while Crash Course averages 4.8 from 1.6K ratings.

### Do Sets Challenge or Crash Course have ads?

Neither Sets Challenge nor Crash Course shows ads.

### Which is updated more often, Sets Challenge or Crash Course?

Sets Challenge ships an update every 4 months, and Crash Course every 4 months. Most recently, Sets Challenge was updated on October 21, 2026 and Crash Course on October 20, 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.*