# Polar Scope Align Pro Watch vs Zark Update

The clearest difference is price: Zark Update at Free against Polar Scope Align Pro Watch's $5.99. Polar Scope Align Pro Watch's advantage is chart position (#181 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

Zark Update is free to download; Polar Scope Align Pro Watch costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Polar Scope Align Pro Watch ships an update every 6 weeks, Zark Update every 2 months. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Polar Scope Align Pro Watch | Zark Update |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[4.9 (51 ratings)](https://appshunter.io/ios/app/polar-scope-align-pro-watch/id986082042/reviews)** | — |
| Number of ratings | **51** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#181** | — |
| Size | 38 MB | 27 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dimitrios Kechagias](https://appshunter.io/developer/970157964) | [SEC of America Incorporated](https://appshunter.io/developer/894019771) |

## What reviewers say

### Polar Scope Align Pro Watch

[App page](https://appshunter.io/ios/app/polar-scope-align-pro-watch/id986082042)

**Currently charting:** #181 Top Paid · Utilities (US App Store)

This app provides precise polar alignment for telescopes, with or without a polar scope. It includes a comprehensive suite of astronomical tools, such as a DSO database, calculators, and mount control. An accompanying watch app offers real-time alignment data and weather information.

**Highlights:** Precise polar alignment calculation, Polar scope reticle selection, Daytime/no polarscope alignment, Deep Space Object database, Astronomical calculators, iOptron mount control, Apple Watch companion app

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### Zark Update

[App page](https://appshunter.io/ios/app/zark-update/id6673909377)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Polar Scope Align Pro Watch free?

Polar Scope Align Pro Watch costs $5.99, with no in-app purchases.

### Is Zark Update free?

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

### Do Polar Scope Align Pro Watch or Zark Update have ads?

Neither Polar Scope Align Pro Watch nor Zark Update shows ads.

### Which is updated more often, Polar Scope Align Pro Watch or Zark Update?

Polar Scope Align Pro Watch ships an update every 6 weeks, and Zark Update every 2 months. Most recently, Polar Scope Align Pro Watch was updated on November 6, 2026 and Zark Update on November 8, 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.*