# SkyORB ∞ Astronomy vs MapProjectionDemonstration

The clearest difference is price: MapProjectionDemonstration at Free against SkyORB ∞ Astronomy's $2.99. SkyORB ∞ Astronomy's advantage is device support (5 vs 2). On ads, in-app purchases and iOS requirement there is nothing between them.

MapProjectionDemonstration is free to download; SkyORB ∞ Astronomy costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | SkyORB ∞ Astronomy | MapProjectionDemonstration |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/mapprojectiondemonstration/id6448708606/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Paid | **Free** |
| Size | 303 MB | 9 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod, Apple TV, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stephane Denis](https://appshunter.io/developer/295455703) | [Geoffrey Domm](https://appshunter.io/developer/373378724) |

## What reviewers say

### SkyORB ∞ Astronomy

[App page](https://appshunter.io/ios/app/skyorb-astronomy/id1625985880)

Explore the universe with an interactive 3D star map, real-time celestial positions, and a 14-day schedule of astronomical events. Identify stars and planets using augmented reality and access detailed information about celestial bodies.

**Highlights:** Interactive 3D star map, Real-time celestial positions, Augmented Reality (AR) identification, 14-day astronomical event schedule, Detailed planet and celestial body information, Time shift feature for celestial events

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### MapProjectionDemonstration

[App page](https://appshunter.io/ios/app/mapprojectiondemonstration/id6448708606)

Explore and understand various map projections with this educational tool. It visually demonstrates how spherical data is converted to flat maps, allowing customization of central latitude and longitude. Formulas for conversion are also provided.

**Highlights:** Illustrates map projections, Categorizes projections (cylindrical, conic, azimuthal), Demonstrates 31 projection types, Customizable central latitude and longitude, Includes conversion formulas, Visual conversion process

**In-app purchases:** none


## Frequently asked questions

### Is SkyORB ∞ Astronomy free?

SkyORB ∞ Astronomy costs $2.99, with no in-app purchases.

### Is MapProjectionDemonstration free?

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

### Do SkyORB ∞ Astronomy or MapProjectionDemonstration have ads?

Neither SkyORB ∞ Astronomy nor MapProjectionDemonstration 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.*