# Star Guide vs Simplex Linear Programming

The clearest difference is price: Star Guide at Free against Simplex Linear Programming's $1.99. Star Guide also leads on iOS requirement (15.5 vs 26.0). Simplex Linear Programming's advantage is in-app purchases (none vs 4). On ads and device support there is nothing between them.

Star Guide is free to download; Simplex Linear Programming costs $1.99 up front. Star Guide sells 4 in-app purchases, starting at $1.99 per 7 days. Simplex Linear Programming asks for nothing beyond the download.

## The numbers

| Metric | Star Guide | Simplex Linear Programming |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.5 (4.3K ratings)](https://appshunter.io/ios/app/star-guide-night-sky-map/id1542535191/reviews)** | — |
| Number of ratings | **4.3K** | — |
| Positive reviews | 26.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 220 MB | 9 MB |
| Requires iOS | **15.5** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Star register](https://appshunter.io/developer/1542535193) | [Jorge Lucioni Charalla](https://appshunter.io/developer/1198674844) |

## What reviewers say

### Star Guide

[App page](https://appshunter.io/ios/app/star-guide-night-sky-map/id1542535191)

Transform your device into a real-time planetarium to explore the night sky. Identify stars and planets, and plan optimal viewing times. Experience celestial objects in 3D and preview future or past sky conditions from any location.

**Highlights:** Real-time star and planet identification, Augmented Reality sky overlay, 3D celestial object visualization, Best viewing time notifications, Sky time travel (past/future), Location-based sky preview

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Star-Registration Premium | $4.99 | per month |
| Annually | $29.99 | per year |
| One time | $24.99 | one-time |


### Simplex Linear Programming

[App page](https://appshunter.io/ios/app/simplex-linear-programming/id6761789807)

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

**In-app purchases:** none


## Frequently asked questions

### Is Star Guide free?

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

### Is Simplex Linear Programming free?

Simplex Linear Programming costs $1.99, with no in-app purchases.

### Do Star Guide or Simplex Linear Programming have ads?

Neither Star Guide nor Simplex Linear Programming shows ads.

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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.*