# SynScan Pro

> App to control motorized telescope mounts from Sky-Watcher

Canonical page: [https://chrome-stats.com/d/com.skywatcher.synscanapppro](https://chrome-stats.com/d/com.skywatcher.synscanapppro)

## Overview

- **ID:** `com.skywatcher.synscanapppro`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Skywatcher Apps Team
- **Category:** TOOLS
- **Downloads:** 131,728
- **Rating:** 2.47 / 5 (1,019 ratings)
- **Version:** 2.5.15
- **Last updated:** 2025-11-08
- **First published:** 2017-10-27
- **Publisher country:** CA
- **Size:** 42 MB
- **Data as of:** 2026-09-13
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.skywatcher.synscanapppro)
- **Website:** [http://skywatcher.com](http://skywatcher.com/)
- **Privacy policy:** [http://www.skywatcher.com/faq/](http://www.skywatcher.com/faq/)

## Description

SynScan Pro is a powerful app designed for expert astronomers to control Sky-Watcher motorized telescope mounts using Wi-Fi, USB, or Bluetooth LE connections. It supports mounts without built-in Wi-Fi via the SynScan Wi-Fi adapter, enabling seamless control to slew, align, GOTO, and track celestial objects.

This Pro version includes advanced features like Point And Track to follow objects without alignment, gamepad navigation, comprehensive celestial catalogs, and integration with third-party astronomy apps such as SkySafari and Stellarium. Additional capabilities include SynMatrix AutoAlign using smartphone cameras, polar alignment assistance, camera shutter control for astrophotography, and advanced mount controls including auto home, PPEC, and parking modes. SynScan Pro supports TCP/UDP access from any platform and offers satellite tracking when paired with compatible apps, making it an essential tool for dedicated astronomy enthusiasts and professionals.

## Rankings

- #194,661 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_COARSE_LOCATION`
- `android.permission.ACCESS_FINE_LOCATION`
- `android.permission.ACCESS_GPS`
- `android.permission.ACCESS_LOCATION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.BLUETOOTH`
- `android.permission.BLUETOOTH_ADMIN`
- `android.permission.BLUETOOTH_ADVERTISE`
- `android.permission.BLUETOOTH_CONNECT`
- `android.permission.BLUETOOTH_SCAN`
- `android.permission.CAMERA`
- `android.permission.CHANGE_NETWORK_STATE`
- `android.permission.INTERNET`
- `android.permission.MODIFY_AUDIO_SETTINGS`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.RECORD_AUDIO`
- `android.permission.VIBRATE`
- `android.permission.WRITE_EXTERNAL_STORAGE`

## Review summary

SynScan Pro is praised for its GoTo capability, large object catalog, and easy controls, and it can work well with popular mounts. However, stability and reliability are recurring concerns: frequent crashes/freezes, mounting/connection problems, and unreliable alignment. Users also call out a cluttered/unfriendly UI and missing features like dithering. Updates have resolved some issues for some devices, but consistency across Android versions and hardware remains a common complaint.

### Pros

- GoTo feature with a large object catalog and searchable lists
- Easy-to-use UI and intuitive controls
- Good mount compatibility with AZ-GTi and Star Adventurer GTi when connected
- Helpful built-in features like Tonight's Best and object listings

### Cons

- Frequent crashes and freezes across many reviews (crashes, unresponsive UI, white screens)
- Connectivity and pairing problems with mounts and WiFi adapters (can't connect or communicate)
- Alignment reliability issues (polar alignment and two-star alignment can be flaky)
- UI/UX issues (unintuitive UI, poor documentation, visual glitches like black-on-black text)
- Missing dithering option for shutter/DSLR control (requested by users)

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.skywatcher.synscanapppro)