# Exoplanet Explorer vs Engineering Entrance Prep

The clearest difference is in-app purchases: Engineering Entrance Prep at none against Exoplanet Explorer's 4. Engineering Entrance Prep also leads on iOS requirement (13.0 vs 18.0). Exoplanet Explorer's advantage is ads (none vs shown) and device support (5 vs 3). On price there is nothing between them.

Both are free to download. Exoplanet Explorer sells 4 in-app purchases, starting at $2.99 per 3 months. Engineering Entrance Prep asks for nothing beyond the download.

## The numbers

| Metric | Exoplanet Explorer | Engineering Entrance Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (70 ratings)](https://appshunter.io/ios/app/exoplanet-explorer/id1457614833/reviews)** | — |
| Number of ratings | **70** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | — |
| Monetization | Freemium | — |
| Size | 171 MB | 52 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Carsten Knoblich](https://appshunter.io/developer/541438854) | [AARATI MAHATO](https://appshunter.io/developer/1889457229) |

## What reviewers say

### Exoplanet Explorer

[App page](https://appshunter.io/ios/app/exoplanet-explorer/id1457614833)

Explore a vast catalog of over 6,000 confirmed exoplanets with detailed scientific data. Compare worlds, visualize habitable zones, and track new discoveries. Ideal for stargazers, students, educators, and researchers.

**Highlights:** 6,000+ confirmed exoplanets, Detailed scientific data, Advanced filtering and sorting, Planet comparison tool, Habitable zone analysis, Home screen widgets, Apple Watch companion app

**Features:** Family Sharing, Apple Watch app

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 months subscription | $2.99 | per 3 months |
| 12 months subscription | $6.99 | per year |
| Big supporting tip | $2.99 | one-time |
| Really big supporting tip | $4.99 | one-time |


### Engineering Entrance Prep

[App page](https://appshunter.io/ios/app/engineering-entrance-prep/id6781546010)

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

**In-app purchases:** none


## Frequently asked questions

### Is Exoplanet Explorer free?

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

### Is Engineering Entrance Prep free?

Engineering Entrance Prep is free to download, with no in-app purchases.

### Do Exoplanet Explorer or Engineering Entrance Prep have ads?

Engineering Entrance Prep shows ads; Exoplanet Explorer does not.

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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.*