# High School Astronomy vs CHSPE

The clearest difference is price: CHSPE at Free against High School Astronomy's $2.99. CHSPE also leads on update cadence (every 10 months vs every 37 months). High School Astronomy's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 13.0). On ads and device support there is nothing between them.

CHSPE is free to download; High School Astronomy costs $2.99 up front. CHSPE sells 2 in-app purchases, starting at $9.99 per month. High School Astronomy asks for nothing beyond the download.

High School Astronomy ships an update every 37 months, CHSPE every 10 months. The most recent releases landed on September 21, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | High School Astronomy | CHSPE |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chspe/id1564945215/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 10 months** |
| Monetization | — | Subscription |
| Size | 14 MB | 15 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nurten PIRLI](https://appshunter.io/developer/1495958705) | [YourTeacher.com](https://appshunter.io/developer/340925628) |

## What reviewers say

### High School Astronomy

[App page](https://appshunter.io/ios/app/high-school-astronomy/id1497129356)

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

**In-app purchases:** none


### CHSPE

[App page](https://appshunter.io/ios/app/chspe/id1564945215)

Prepare for the CHSPE Math test with comprehensive video lessons, practice tests, and diagnostic quizzes. Track your progress with detailed reports and chapter reviews to ensure you pass with confidence. A free trial is available.

**Highlights:** Video instruction, Guided practice, Practice tests, Diagnostic quizzes, Progress tracking, Chapter reviews

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CHSPE Math Test Prep Monthly | $9.99 | per month |
| CHSPE Monthly | $9.99 | per month |


## Frequently asked questions

### Is High School Astronomy free?

High School Astronomy costs $2.99, with no in-app purchases.

### Is CHSPE free?

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

### Do High School Astronomy or CHSPE have ads?

Neither High School Astronomy nor CHSPE shows ads.

### Which is updated more often, High School Astronomy or CHSPE?

High School Astronomy ships an update every 37 months, and CHSPE every 10 months. Most recently, High School Astronomy was updated on September 21, 2026 and CHSPE on September 13, 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.*