# Polar Scope Align Pro vs SynScan

The clearest difference is review sentiment: Polar Scope Align Pro at 97% against SynScan's 22%. Polar Scope Align Pro also leads on rating (4.9 vs 3.3) and ratings volume (305 vs 8). SynScan's advantage is price (Free vs $3.99) and in-app purchases (none vs 3). On update cadence, ads, device support and iOS requirement there is nothing between them.

SynScan is free to download; Polar Scope Align Pro costs $3.99 up front. Polar Scope Align Pro sells 3 one-off in-app purchases. SynScan asks for nothing beyond the download.

Polar Scope Align Pro holds the better App Store score, 4.9 against 3.3. That said, the two scores are not equally well evidenced: Polar Scope Align Pro has 305 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 97% of Polar Scope Align Pro's written reviews are positive against 22% of SynScan's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 25, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Polar Scope Align Pro | SynScan |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.9 (305 ratings)](https://appshunter.io/ios/app/polar-scope-align-pro/id970161373/reviews)** | [3.3 (8 ratings)](https://appshunter.io/ios/app/synscan/id1243086631/reviews) |
| Number of ratings | **305** | 8 |
| Positive reviews | **97.0% of reviews** | 22.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#64** | — |
| Size | 32 MB | 46 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dimitrios Kechagias](https://appshunter.io/developer/970157964) | [Astropower Technology Co. Ltd.](https://appshunter.io/developer/1787940478) |

## What reviewers say

### Polar Scope Align Pro

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

**Currently charting:** #64 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


### SynScan

[App page](https://appshunter.io/ios/app/synscan/id1243086631)

Control motorized telescope mounts for celestial object tracking and exploration. Features include GOTO functionality, object catalogs, and gamepad navigation. Ideal for novice users with alt-azimuth mounts.

**Highlights:** Control telescope mount slew, align, GOTO, and track, Point and Track celestial objects, Support gamepad navigation, Browse and save celestial object catalogs, Third-party app integration (ASCOM, SkySafari, Stellarium), Emulator mount for testing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Polar Scope Align Pro free?

Polar Scope Align Pro costs $3.99, and also offers in-app purchases.

### Is SynScan free?

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

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

Polar Scope Align Pro is rated higher. Polar Scope Align Pro averages 4.9 out of 5 from 305 ratings, while SynScan averages 3.3 from 8 ratings.

### Do Polar Scope Align Pro or SynScan have ads?

Neither Polar Scope Align Pro nor SynScan shows ads.

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

Polar Scope Align Pro ships an update every 2 months, and SynScan every 2 months. Most recently, Polar Scope Align Pro was updated on September 25, 2026 and SynScan on June 1, 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.*