Reviews of Sight reduction

By: Navigational Algorithms App

List of user reviews and ratings for Sight reduction

Total ratings

3.67 (Rating count: 123)

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Review summary

Users appreciate the app as a valuable navigation aid that saves time and works well especially with a nautical almanac app. However, multiple reviews mention issues such as absence of time input for sights, data loss when rotating the screen, and difficulties with data entry including negative instrument corrections. Improving the interface and adding time specification would enhance usability.

Pros

Great reference material for sight reduction and navigation calculations.
Saves significant time and effort compared to manual paper methods.
Works well when used in conjunction with a nautical almanac app.
Helpful for quick plotting of fixes and verifying navigational work.
Provides a reliable backup to GPS navigation.

Cons

Lacks time specification for each sight, limiting navigation accuracy.
Data entry interface is cumbersome and could be improved.
App loses previous Line of Position (LOP) data when device orientation changes.
Difficulty entering negative instrument correction values, requiring workarounds.

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User Reviews

Recent rating average: 3.40

All time rating average: 3.67

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27% (3)

Date	Author	Comment
2022-06-12	Ma*****	Does not appear to have instructions or nautical almanac.
Does not appear to have instructions or nautical almanac.
2022-02-18	Su*****	Great references
Great references
2022-01-08	jo*****	This app is useless for navigation because you can't specify the time at each sight. Would be very handy if there was a time perameter in the LOP box.
This app is useless for navigation because you can't specify the time at each sight. Would be very handy if there was a time perameter in the LOP box.
2020-04-22	A *****	Works fine now
Works fine now
2017-10-10	A *****	Needs a better data entry interface.
Needs a better data entry interface.
2017-06-12	A *****	Great app, but I have two points to mention. 1) When I twist the smartphone (Samsung S-7) to horizontal all the previous LOPs disappear. So I have to re-enter all that data. Argh! 2) It's seemingly impossible to enter a negative IC (instrument correction). The work-around I use is to enter a negative value in some other APP and then copy/paste into the IC correction space. In conjunction with the Nautical Almanac app that I have this is a near perfect combination. I'm not giving up my GPS units, but it sure is nice to have some old-school stuff around as a back-up.
Great app, but I have two points to mention. 1) When I twist the smartphone (Samsung S-7) to horizontal all the previous LOPs disappear. So I have to re-enter all that data. Argh! 2) It's seemingly impossible to enter a negative IC (instrument correction). The work-around I use is to enter a negative value in some other APP and then copy/paste into the IC correction space. In conjunction with the Nautical Almanac app that I have this is a near perfect combination. I'm not giving up my GPS units, but it sure is nice to have some old-school stuff around as a back-up.
2015-07-15	A *****	fix it please..
fix it please..
2015-05-27	A *****	Very Helpful! Thanks
Very Helpful! Thanks
2014-11-11	A *****	Great!!! Save a lot of time and a lot effort for a bunch of paper works required now a days on a merchant shipping... Thanks.
Great!!! Save a lot of time and a lot effort for a bunch of paper works required now a days on a merchant shipping... Thanks.
2014-10-03	A *****	Can be used to yuor good correction..wow
Can be used to yuor good correction..wow