Best out there right now
Developer fixes bugs and this app is actively supported. The best I can say is very simple: It works as advertised! I sail extensively and use this app regularly. Sailingwithgrace.com
Description
Celestial Nav is an easy to use, all-in-one tool which offers:
• Celestial navigational computations for your device
• Simple toolbar menu for quick access
• Internally stored perpetual Almanac
• Offline ready and functional without the need for other external tools
• Quick and easy capture celestial observation data
• High accuracy sight reductions
• Star reference tables
SIGHT PLANNING
• Local Hour Angle (LHA) for Aries
• Star tables sorted by name, magnitude, declination, and SHA
• Sunrise, sunset, twilight, and location reference
• Moon phase reference
SIGHT REDUCTION
• High accuracy sight reduction algorithm
• Perpetual Almanac offering accurate data for years 1600 - 3000
• Almanac data for Sun, Moon, Mercury, Venus, Mars, Jupiter, Saturn
• Detailed Almanac data for 58 navigational stars
• Assumed Position (AP) for any user defined position
• Line of Position (LOP) intercept data for accurate course and speed adjustments
• Computational variables displayed for accuracy and validation
CELESTIAL FIX
• Computations by USNO algorithm in the Nautical Almanac
• Save all your LOP in an easy reference table
BASIC VERSION
Free daytime celestial navigation tools using the sun:
• Unlimited sextant sight reduction calculations
• Sight reduction to a line of position using the sun
• Perpetual almanac for the sun
• Advanced sight corrections for index error, eye height, temperature, and pressure
• Support for upper and lower limb reference
• Star Table with navigational references
• Detailed Sun references
• Limited Moon references
PRO FEATURES (IN-APP PURCHASE)
Advanced Day & Night Celestial Navigation includes all BASIC features plus:
• Almanac data for 65 navigational bodies for years 1600 through 3000
• Map display for saved LOPs
• View intercepts with course and speed corrections
• Metric and imperial unit support with automatic conversions
• Support for coordinate entries in different formats (H° M’ S” or Decimals)
• Save all your LOP calculations for future reference
• Save user preferences and settings
• Unrestricted moon references
• Almanac and algorithmic models for 65 navigational bodies:
• Sun, Moon, Mercury, Venus, Mars, Jupiter, and Saturn
• 58 navigational stars
Supported stars: Acamar, Achernar, Acrux, Adhara, Aldebaran, Alioth, Alkaid, Alnair, Alnilam, Alphard, Alphecca, Alpheratz, Altair, Ankaa, Antares, Arcturus, Atria, Avior, Bellatrix, Betelgeuse, Canopus, Capella, Deneb, Denebola, Diphda, Dubhe, Elnath, Eltanin, Enif, Fomalhaut, Gacrux, Gienah, Hadar, Hamal, Kaus Australis, Kochab, Markab, Menkar, Menkent, Miaplacidus, Mirfak, Nunki, Peacock, Polaris, Pollux, Procyon, Rasalhague, Regulus, Rigel, Rigil Kent., Sabik, Schedar, Shaula, Sirius, Spica, Suhail, Vega, Zubengenubi
REFERENCES
Sight reductions and celestial calculations use various internationally accepted references for the most accurate results:
• Jean Meeus - Astronomical Algorithms
• US Naval Observatory (USNO) Almanac and Algorithms
• Hipparcos New Astrometric Catalog, Published 2007
• ELP2000-85
SUBSCRIPTION TERMS
Celestial Nav is free to download and the basic features free to use. A paid upgrade to the PRO version provides access to premium features and additional tools.
We may offer trial subscriptions that give limited time access to all PRO features and premium content for the duration of the trial period. Trial subscriptions automatically expire and the app will revert back to the Basic version thereafter. No data is lost but access and use of premium features will no longer be available.
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• Celestial navigational computations for your device
• Simple toolbar menu for quick access
• Internally stored perpetual Almanac
• Offline ready and functional without the need for other external tools
• Quick and easy capture celestial observation data
• High accuracy sight reductions
• Star reference tables
SIGHT PLANNING
• Local Hour Angle (LHA) for Aries
• Star tables sorted by name, magnitude, declination, and SHA
• Sunrise, sunset, twilight, and location reference
• Moon phase reference
SIGHT REDUCTION
• High accuracy sight reduction algorithm
• Perpetual Almanac offering accurate data for years 1600 - 3000
• Almanac data for Sun, Moon, Mercury, Venus, Mars, Jupiter, Saturn
• Detailed Almanac data for 58 navigational stars
• Assumed Position (AP) for any user defined position
• Line of Position (LOP) intercept data for accurate course and speed adjustments
• Computational variables displayed for accuracy and validation
CELESTIAL FIX
• Computations by USNO algorithm in the Nautical Almanac
• Save all your LOP in an easy reference table
BASIC VERSION
Free daytime celestial navigation tools using the sun:
• Unlimited sextant sight reduction calculations
• Sight reduction to a line of position using the sun
• Perpetual almanac for the sun
• Advanced sight corrections for index error, eye height, temperature, and pressure
• Support for upper and lower limb reference
• Star Table with navigational references
• Detailed Sun references
• Limited Moon references
PRO FEATURES (IN-APP PURCHASE)
Advanced Day & Night Celestial Navigation includes all BASIC features plus:
• Almanac data for 65 navigational bodies for years 1600 through 3000
• Map display for saved LOPs
• View intercepts with course and speed corrections
• Metric and imperial unit support with automatic conversions
• Support for coordinate entries in different formats (H° M’ S” or Decimals)
• Save all your LOP calculations for future reference
• Save user preferences and settings
• Unrestricted moon references
• Almanac and algorithmic models for 65 navigational bodies:
• Sun, Moon, Mercury, Venus, Mars, Jupiter, and Saturn
• 58 navigational stars
Supported stars: Acamar, Achernar, Acrux, Adhara, Aldebaran, Alioth, Alkaid, Alnair, Alnilam, Alphard, Alphecca, Alpheratz, Altair, Ankaa, Antares, Arcturus, Atria, Avior, Bellatrix, Betelgeuse, Canopus, Capella, Deneb, Denebola, Diphda, Dubhe, Elnath, Eltanin, Enif, Fomalhaut, Gacrux, Gienah, Hadar, Hamal, Kaus Australis, Kochab, Markab, Menkar, Menkent, Miaplacidus, Mirfak, Nunki, Peacock, Polaris, Pollux, Procyon, Rasalhague, Regulus, Rigel, Rigil Kent., Sabik, Schedar, Shaula, Sirius, Spica, Suhail, Vega, Zubengenubi
REFERENCES
Sight reductions and celestial calculations use various internationally accepted references for the most accurate results:
• Jean Meeus - Astronomical Algorithms
• US Naval Observatory (USNO) Almanac and Algorithms
• Hipparcos New Astrometric Catalog, Published 2007
• ELP2000-85
SUBSCRIPTION TERMS
Celestial Nav is free to download and the basic features free to use. A paid upgrade to the PRO version provides access to premium features and additional tools.
We may offer trial subscriptions that give limited time access to all PRO features and premium content for the duration of the trial period. Trial subscriptions automatically expire and the app will revert back to the Basic version thereafter. No data is lost but access and use of premium features will no longer be available.
In-Apps
- PRO Version
- $7.99
- 7 Day Trial License
- $0.99
- 30 Day Trial License
- $2.99
- PRO Version Lifetime
- $24.99
Screenshots
User Rating
4.43 out of 5
7 ratings in United States
5 star
6
4 star
0
3 star
0
2 star
0
1 star
1
Ratings History
Celestial Nav Installs
Last 30 daysCelestial Nav Revenue
Last 30 daysCelestial Nav Reviews
Good app, responsive developer
I'm updating my review again! This is a solid app that I've found very useful for learning about celestial navigation. I previously found a couple of bugs in the app and reported them. The developer addressed then immediately, which is really great to see. I recommend this app for its general usefulness as well as the responsiveness of the developer.
Not working
I paid for the seven day trial. The app seemed to work on the first day when taking sun and moon shots, but the Hc calculations did not seem to include either pub. 229 or pub. 249 corrections, the LOPs were not drawn and old LOPs could not be deleted. When testing with Arcturus on the second day the Body selector could not be be changed to a star and the app kept crashing. This may have been caused by the Star Info page being empty. Even after rebooting my iPad, I could no longer select any Body. There seems to be no manual whatsoever to be found for this app.
Nice features and accuracy!
Sweet app! Best one I have seeing for accuracy and lots of additional features 🤓. Developer gets back to questions pretty quick too.
Incredible App
This program does all the complex calculations necessary to determine your position based on your own measurements. Its fun to do the old fashioned way, but is very nice to have a precision calculator like this when you need it. Highly recommend!
Very accurate
The best one out there and so much of it is free! Amazing tool that works perfect for my sight reductions. Highly accurate and spot on with text books and for class room work. I use it for marine navigation and hope to see speed corrections included as well.
Store Rankings
Ranking History
App Ranking History not available yet
Category Rankings
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Chart
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Category
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Rank
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|---|---|---|
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Top Free
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96
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Top Free
|
|
103
|
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Top Free
|
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206
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Top Free
|
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232
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Top Free
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319
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Keywords
Celestial Nav Competitors
| Name | Reviews | Recent release | |
|---|---|---|---|
StarPilot
|
10
|
3 years ago | |
tcSpeeds
Sailing Speed Instrument
|
2
|
1 year ago | |
SEAiq
|
25
|
2 days ago | |
CamSextant
|
3
|
2 years ago | |
EZ Celestial Navigation
ezAlmanacOne
|
2
|
3 days ago | |
Sight Calc
|
16
|
8 months ago | |
iMariner Celestial Navigation
|
3
|
1 year ago | |
Perpetual Nautical Almanac
|
0
|
1 week ago | |
Celestial Navigator
|
3
|
1 year ago | |
Nautical Calculator Preview
Nautical Calculator Preview
|
0
|
1 month ago |
Celestial Nav Revenue and Downloads
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App Info
- Category
- Navigation
- Publisher
- Skytip
- Languages
- English
- Recent version
- 3.2 (1 week ago )
- Released on
- Nov 2, 2021 (2 years ago )
- Also available in
- United States, Switzerland, Philippines, Russia, Ukraine, United Kingdom, Netherlands, Kuwait, Kazakhstan, Lebanon, Mexico, Poland, Malaysia, South Korea, Nigeria, Norway, New Zealand, Japan, Peru, Pakistan, India, Portugal, Romania, Saudi Arabia, Sweden, Singapore, Thailand, Turkey, Taiwan, Vietnam, South Africa, Dominican Republic, Argentina, Austria, Australia, Azerbaijan, Belgium, Brazil, Belarus, Canada, Chile, China, Colombia, Czechia, Germany, Denmark, Italy, Algeria, Ecuador, Egypt, Spain, Finland, France, Greece, Hong Kong, Hungary, Indonesia, Ireland, Israel, United Arab Emirates
- Last updated
- 3 weeks ago