# Polar Scope Align Pro vs MLAstro Hub

The clearest difference is price: MLAstro Hub at Free against Polar Scope Align Pro's $4.99. MLAstro Hub also leads on in-app purchases (none vs 3) and update cadence (every 2 weeks vs every 2 months). Polar Scope Align Pro's advantage is ratings volume (310 vs 1) and chart position (#146 vs unranked). On rating, ads and device support there is nothing between them.

MLAstro Hub is free to download; Polar Scope Align Pro costs $4.99 up front. Polar Scope Align Pro sells 3 one-off in-app purchases. MLAstro Hub asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Polar Scope Align Pro against 5.0 for MLAstro Hub. That said, the two scores are not equally well evidenced: Polar Scope Align Pro has 310 ratings behind it against 1, so its average is the more settled of the two.

Polar Scope Align Pro ships an update every 2 months, MLAstro Hub every 2 weeks. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Polar Scope Align Pro | MLAstro Hub |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [4.9 (310 ratings)](https://appshunter.io/ios/app/polar-scope-align-pro/id970161373/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mlastro-hub/id6767999378/reviews)** |
| Number of ratings | **310** | 1 |
| Positive reviews | 96.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#146** | — |
| Size | 33 MB | 41 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dimitrios Kechagias](https://appshunter.io/developer/970157964) | [To Ngoc Khanh](https://appshunter.io/developer/1732662702) |

## What reviewers say

### Polar Scope Align Pro

[App page](https://appshunter.io/ios/app/polar-scope-align-pro/id970161373)

**Currently charting:** #146 Top Paid · Utilities (US App Store)

This app assists astronomers with precise polar alignment for telescopes, offering tools for various reticles and low-latitude accuracy. It also includes a comprehensive suite of astro tools, from object databases to calculators and weather reports.

**Highlights:** Accurate polar alignment calculation, Support for numerous polar scope reticles, Daytime/no polarscope alignment tool, Deep Space Object database, Astrophotography calculators, World astro-weather report

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip 1x | $0.99 | one-time |
| Tip 4x | $3.99 | one-time |
| Tip 10x | $9.99 | one-time |

**What reviewers like**

- 🚀 Best Polar Alignment App
- 👍 Detailed Instructions and Explanations
- 👍 Fantastic App with Many Useful Features
- 👍 Intuitive and No Distractions
- 👍 Comprehensive Astronomy App

**What reviewers complain about**

- 🐛 Compass Inaccurate
- 🐛 Location Data Inaccurate

**Reported bugs**

- Weather Updates Not Working
- Compass Deflected by Mount

**Requested features**

- Add Observation Recording Feature
- Add Push To Option for DSO Objects


### MLAstro Hub

[App page](https://appshunter.io/ios/app/mlastro-hub/id6767999378)

Control your OnStep telescope mount wirelessly from your phone. Manage mount status, navigate celestial catalogs, and perform alignment and configuration tasks without a laptop.

**Highlights:** Live mount status monitoring, Directional control with adjustable slew rates, One-tap home and park functionality, Access to celestial object catalogs for Go-To slewing, Guided alignment workflow, Flexible Wi-Fi network setup, Configuration and tuning options

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Polar Scope Align Pro free?

Polar Scope Align Pro costs $4.99, and also offers in-app purchases.

### Is MLAstro Hub free?

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

### Which has better reviews, Polar Scope Align Pro or MLAstro Hub?

MLAstro Hub is rated higher. Polar Scope Align Pro averages 4.9 out of 5 from 310 ratings, while MLAstro Hub averages 5.0 from 1 ratings.

### Do Polar Scope Align Pro or MLAstro Hub have ads?

Neither Polar Scope Align Pro nor MLAstro Hub shows ads.

### Which is updated more often, Polar Scope Align Pro or MLAstro Hub?

Polar Scope Align Pro ships an update every 2 months, and MLAstro Hub every 2 weeks. Most recently, Polar Scope Align Pro was updated on October 29, 2026 and MLAstro Hub on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*