# OpenGL ES Reference vs SkyLaunch

The clearest difference is rating: SkyLaunch at 4.9 against OpenGL ES Reference's 3.0. SkyLaunch also leads on review sentiment (100% vs 67%). OpenGL ES Reference's advantage is iOS requirement (8.1 vs 18.0). On price, ratings volume, 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.

SkyLaunch holds the better App Store score, 4.9 against 3.0. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews point the same way: 67% of OpenGL ES Reference's written reviews are positive against 100% of SkyLaunch's.

## The numbers

| Metric | OpenGL ES Reference | SkyLaunch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (3 ratings)](https://appshunter.io/ios/app/opengl-es-reference/id1056915836/reviews) | **[4.9 (7 ratings)](https://appshunter.io/ios/app/skylaunch/id6751340198/reviews)** |
| Number of ratings | 3 | **7** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Monetization | Free | Free |
| Size | 22 MB | 4 MB |
| Requires iOS | **8.1** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Saumya Lahera](https://appshunter.io/developer/921732703) | [Calvin Fraites](https://appshunter.io/developer/1802751239) |

## What reviewers say

### OpenGL ES Reference

[App page](https://appshunter.io/ios/app/opengl-es-reference/id1056915836)

This app provides offline access to detailed descriptions of all OpenGL ES commands and functions from the official Khronos Group website. It's designed to help developers easily reference graphics API information, even for beginners.

**Highlights:** Complete OpenGL ES 3.2 command descriptions, Information from official Khronos Group website, Offline access, Systematic function listing, Search bar and index, Landscape mode support

**Features:** macOS Compatibility

**In-app purchases:** none


### SkyLaunch

[App page](https://appshunter.io/ios/app/skylaunch/id6751340198)

Stay informed about all upcoming space missions with real-time notifications and detailed information. Track launches from various providers worldwide, view mission specifics, and access live streams. Share your excitement with friends and customize your viewing experience.

**Highlights:** Real-time push notifications for launches, Monthly dashboard overview of missions, Filter launches by global region, Detailed mission pages with purpose and weather, Direct links to live launch streams, Launch probability and weather impact, Share launch events with others

**In-app purchases:** none


## Frequently asked questions

### Is OpenGL ES Reference free?

OpenGL ES Reference is free to download, with no in-app purchases.

### Is SkyLaunch free?

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

### Which has better reviews, OpenGL ES Reference or SkyLaunch?

SkyLaunch is rated higher. OpenGL ES Reference averages 3.0 out of 5 from 3 ratings, while SkyLaunch averages 4.9 from 7 ratings.

### Do OpenGL ES Reference or SkyLaunch have ads?

Neither OpenGL ES Reference nor SkyLaunch 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.*