# Apphemeride Precise Astronomy vs Astar Star Map Night Sky Guide

The clearest difference is monetization model: Apphemeride Precise Astronomy at free against Astar Star Map Night Sky Guide's free with in-app purchases. Astar Star Map Night Sky Guide's advantage is iOS requirement (18.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Apphemeride Precise Astronomy sells 2 one-off in-app purchases and Astar Star Map Night Sky Guide sells 6 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Apphemeride Precise Astronomy | Astar Star Map Night Sky Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/astar-star-map-night-sky-guide/id6781411603/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | — |
| Monetization | **Free** | Free with in-app purchases |
| Size | 442 MB | 529 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Csaba Lengyel](https://appshunter.io/developer/1888397396) | [Motto Software & Design](https://appshunter.io/developer/1445301869) |

## What reviewers say

### Apphemeride Precise Astronomy

[App page](https://appshunter.io/ios/app/apphemeride-precise-astronomy/id6776641899)

This app provides precise astronomical data for sky analysis, including eclipses, Moon motion, and planetary positions. It offers location-based calculations and visual tools to understand celestial events and their visibility.

**Highlights:** Precise sky analysis, Eclipse and Moon motion tracking, Location-based celestial calculations, Horizon Tracker for celestial body movement, Detailed planetary and solar system data, Solar and lunar eclipse simulations, Configurable data display

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-day Trial | Free | one-time |
| Apphemeride Full Unlock | $49.99 | one-time |


### Astar Star Map Night Sky Guide

[App page](https://appshunter.io/ios/app/astar-star-map-night-sky-guide/id6781411603)

Explore the night sky with a live 3D star map that identifies constellations and celestial bodies. Leave and discover notes attached to stars, creating a shared or private celestial journal. Optionally name stars or extend note visibility with one-time purchases.

**Highlights:** Live 3D star map, Constellation identification, User-generated notes on stars, Public Explore feed, Private Journal, Symbolic star naming, Capture mode for aiming

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Astar Premium | $7.99 | per month |
| Astar Premium | $49.99 | per year |
| Extend Note +3 Days | $0.99 | one-time |
| Extend Note +7 Days | $1.99 | one-time |
| Name a Star (1 Month) | $14.99 | one-time |
| Name a Star (1 Month) | $19.99 | one-time |


## Frequently asked questions

### Is Apphemeride Precise Astronomy free?

Apphemeride Precise Astronomy is free to download, with in-app purchases available.

### Is Astar Star Map Night Sky Guide free?

Astar Star Map Night Sky Guide is free to download, with in-app purchases available.

### Do Apphemeride Precise Astronomy or Astar Star Map Night Sky Guide have ads?

Neither Apphemeride Precise Astronomy nor Astar Star Map Night Sky Guide 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.*