# Astro Locator vs MeMstar

The clearest difference is price: MeMstar at Free against Astro Locator's $3.99. MeMstar also leads on iOS requirement (14.0 vs 18.0). Astro Locator's advantage is update cadence (every 3 months vs every 9 months). On ads, in-app purchases and device support there is nothing between them.

MeMstar is free to download; Astro Locator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Astro Locator ships an update every 3 months, MeMstar every 9 months. The most recent releases landed on September 17, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Astro Locator | MeMstar |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.8 (68 ratings)](https://appshunter.io/ios/app/astro-locator/id927483920/reviews)** | — |
| Number of ratings | **68** | — |
| Positive reviews | 77.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | Free | — |
| Size | 4 MB | 25 MB |
| Requires iOS | 18.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Progress Concepts Limited](https://appshunter.io/developer/788761727) | [Mickael Pannequin](https://appshunter.io/developer/1688387073) |

## What reviewers say

### Astro Locator

[App page](https://appshunter.io/ios/app/astro-locator/id927483920)

This app assists astronomers in quickly and easily achieving polar alignment for their telescopes. It helps locate key stars like Polaris or Sigma Octantis, displaying essential astronomical data for setup and viewing. Ideal for mobile astronomers who frequently set up and pack down their equipment.

**Highlights:** Quick polar alignment, Locate Polaris/Sigma Octantis, Display elevation, latitude, longitude, Show moon phase, Sunrise/sunset times, Astro twilight times, Today Extension widget

**In-app purchases:** none


### MeMstar

[App page](https://appshunter.io/ios/app/memstar/id6449255656)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Astro Locator free?

Astro Locator costs $3.99, with no in-app purchases.

### Is MeMstar free?

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

### Do Astro Locator or MeMstar have ads?

Neither Astro Locator nor MeMstar shows ads.

### Which is updated more often, Astro Locator or MeMstar?

Astro Locator ships an update every 3 months, and MeMstar every 9 months. Most recently, Astro Locator was updated on September 17, 2026 and MeMstar on September 11, 2026.

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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.*