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Polar Scope Align

Polar Scope Align

Telescope Polar alignment

171 ratings
173 reviews
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🔧 Utilities
Free
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Details

  • Released
  • Updated
  • March 4, 2015
  • September 23, 2026

Features

Developer

Dimitrios Kechagias
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Polar Scope Align screenshot #1 for iPhone
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Polar Scope Align screenshot #10 for iPhone
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About

This app calculates the precise position of celestial poles in your telescope's polar scope reticle for accurate alignment. It supports a wide range of reticles and corrects for atmospheric refraction, offering precision even at lower latitudes. Features include night mode, moon phase, and astronomical databases.

✓Polaris/Sigma Octantis position calculation
✓Atmospheric refraction correction
✓Reticle centering error correction
✓Supports numerous reticle types
✓Red-color night mode
✓Moon phase and astronomical databases
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What users say

Summarized from real user reviews of Polar Scope Align. Based on 171 reviews and a 4.7/5 average, it highlights the 15 positives and 10 negatives reviewers mention most about this Utilities app.

Positive things

  • 🎯Extensive reticle options for various telescope mounts
  • 👍User-friendly and intuitive interface
  • 🆓Powerful free version with no popup ads
  • 🔴Red night vision mode preserves dark adaptation
  • 📍Accurate GPS-based location detection
  • 🌙Works offline without internet connection
  • ⭐Excellent customer support from developer
  • 📚Clear instructions and helpful documentation
  • 🔧Thoughtfully designed with attention to detail
  • 🎨Clean, simple design without distractions
  • ⏰Includes accurate clock with seconds for ISS tracking
  • 🌍Supports both northern and southern hemisphere alignment
  • 💰Free app with optional pro version
  • 🔋Battery-saving GPS features
  • 📊Multiple useful calculators and tools included

Negative things

  • 🐛Inconsistent accuracy with metal mounts/tripods
  • 📱Font size too small for comfortable reading
  • 🎯Center dot in reticle obscures precise alignment
  • 📍Limited effectiveness for southern hemisphere (Sigma Octantis is dim)
  • ❓Steep learning curve for beginners without proper guidance
  • 🔴Red color not bold enough for visibility
  • 📺Lacks comprehensive video tutorials
  • ⏰Time/date dial misalignment reported
  • 📢Ad button could be smaller/less intrusive
  • 🌐Reliance on cell tower location data can be inaccurate
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What's New in Polar Scope Align

7.2

September 23, 2026

• DSO database listing improvements: ◦ Long press on an object's details will copy the data. ◦ Chart size tweaks and a vertical dashed line shows current time. ◦ Image loading animation. • Windowed mode fixes. Remember, the app never nags you with popups, so it gets very few ratings/reviews. Support it by rating it!

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3

Subscriptions & In-App Purchases

$0.99

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User reviews

Most RecentHighest RatedLowest Rated

Excellent

Maybe it’s time for a name change for this app. I don’t use a polar scope any more - it’s indispensable for that - but the app is still very useful because over the years the developer has added many features that go well beyond simply polar aligning and is still (September 2026) actively developing it. It’s one of the best astronomy apps available. Get it - you’ll be glad you did.
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Jif001Jif001

Takahashi EM-11

Nice app. But there is no my mount in options. Takahashi EM-11 (with Temma2 Jr.).
F_V_SF_V_S

Response from developer

Hello. Are you sure about that? The EM-11 should have what is listed as Takahashi 2000-2030 in the app. In any case, if you really have a polar scope that is not included, please contact me at astro.ecuadors.net and I can add it with your help!

A nice app

A very convenient app, I’d recommend it to any astrophotographer.
andrewsem-1957andrewsem-1957

Skywatcher star adventure

GTI goto e propirtdc
MilcheleMilchele

Great app for polar alignment!

This app is doing what it is intended for and in addition explains a lot of useful information, tips and tricks around the alignment process.

Recommended! 👍
Me CookieMe Cookie
See 168 more reviews

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User experience

🐞

Reported Bugs

6 issues

Date and time dial do not match correctly

Bug

GMT and LST times appear to be switched

Bug

App crashes or fails to initialize for some users

Bug

Alignment accuracy varies inconsistently between sessions

Bug

Location detection issues with cell tower vs GPS

Bug

Reticle display not rendering properly in some cases

Bug
✨

Requested Features

7 requests

Online video tutorials demonstrating all features

Feature

Remove or reduce center dot size in reticle

Feature

Larger, bolder font options for better readability

Feature

Brighter star options for southern hemisphere alignment

Feature

Smaller ad button or ad customization

Feature

Better beginner onboarding and instructions

Feature

More robust alternative alignment methods for southern hemisphere

Feature

FAQ

What does Polar Scope Align do?

Polar Scope Align calculates the exact position of Polaris or Sigma Octantis within your telescope's polar scope reticle. This allows for quick and accurate polar alignment of your telescope, crucial for astrophotography and precise viewing. It accounts for your specific location and atmospheric conditions for enhanced accuracy.

How accurate is the polar alignment with this app?

The app provides highly accurate polar alignment, especially at lower latitudes, by correcting for atmospheric refraction and other celestial effects. It aims for precision comparable to scientific software, distinguishing it from simpler alignment apps. The accuracy is detailed in the app's help section.

What is the cost of Polar Scope Align?

The app offers a free, ad-supported version with core polar alignment features. An optional ad-free Pro version is available for purchase, which includes additional advanced features like manual time/location entry, zoomable reticles, and daytime alignment tools.

What types of telescope reticles are supported?

The app supports a vast collection of reticles from various manufacturers, including iOptron, Astro-Physics, Takahashi, Orion, Skywatcher, Celestron, Meade, Vixen, and many more. Users can select the reticle that matches their specific polar scope.

Can this app help with alignment in the Southern Hemisphere?

Yes, the app provides assistance for Southern Hemisphere users by calculating the position of Sigma Octantis. It also includes a 'PoleMaster help view' specifically for South Hemisphere users to aid in their polar alignment process.