# MapProjectionDemonstration vs StarHop Navigator

The clearest difference is price: MapProjectionDemonstration at Free against StarHop Navigator's $3.99. MapProjectionDemonstration also leads on iOS requirement (16.4 vs 18.0). StarHop Navigator's advantage is rating (5.0 vs 1.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

MapProjectionDemonstration is free to download; StarHop Navigator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

StarHop Navigator holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

## The numbers

| Metric | MapProjectionDemonstration | StarHop Navigator |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/mapprojectiondemonstration/id6448708606/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/starhop-navigator/id6760609083/reviews)** |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Monetization | **Free** | Paid |
| Size | 9 MB | 135 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Geoffrey Domm](https://appshunter.io/developer/373378724) | [BERNHARD MICHAEL HELPFERER](https://appshunter.io/developer/1885301152) |

## What reviewers say

### 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


### StarHop Navigator

[App page](https://appshunter.io/ios/app/starhop-navigator/id6760609083)

This app guides your manual telescope to celestial objects using your iPhone's sensors. Simply attach your phone, calibrate with a few stars, select a target, and follow the on-screen crosshair to find it in your eyepiece. It's designed for beginners and experienced astronomers alike, offering a straightforward way to explore the night sky.

**Highlights:** Manual push-to guidance, 2-3 star calibration, Interactive star chart, Messier catalog, Offline functionality, Observation log, Apple Watch integration

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is MapProjectionDemonstration free?

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

### Is StarHop Navigator free?

StarHop Navigator costs $3.99, with no in-app purchases.

### Which has better reviews, MapProjectionDemonstration or StarHop Navigator?

StarHop Navigator is rated higher. MapProjectionDemonstration averages 1.0 out of 5 from 1 ratings, while StarHop Navigator averages 5.0 from 1 ratings.

### Do MapProjectionDemonstration or StarHop Navigator have ads?

Neither MapProjectionDemonstration nor StarHop Navigator 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.*