WMM PAL vs EZ Celestial Navigation
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WMM PAL
This app accurately calculates magnetic declination worldwide using the World Magnetic Model from NOAA. It has been updated with modern Swift and SwiftUI tools for improved performance and features.
- Accurate magnetic declination calculation
- Global coverage
- Uses World Magnetic Model (NOAA)
- Updated with Swift and SwiftUI
- Built-in description
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This App uses the World Magnetic Model developed by NOAA to determine the magnetic declination very accurately at any latitude, longitude and elevation of your choice, anywhere on the planet. This App was originally introduced using objective-C tools and has now been upgraded with new features to Swift and SwiftUI tools. There is a full built-in description in the App.
EZ Celestial Navigation
This app simplifies celestial navigation using a sextant, providing tools to calculate your position at sea. It offers automated calculations or manual table access, with features for observation archiving and compass checks. Ideal for learning and practicing traditional navigation methods.
- Automated sight reduction and LOP plotting
- Manual Nautical Almanac and Pub. 229 table access
- Observation archiving and restoration
- Compass check functionality
- Printable Nautical Almanac pages and reports
- Universal app for iOS and macOS
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Celestial navigation has never been easier! With ezAlmanacOne and a sextant you will be finding your fix like a pro in no time! ezAlmanacOne is an evolution of the iPad version of ezAlmanac with the modern user interface used in the Windows 10 version of ezAlmanac. All of the features of ezAlmanac plus new features including: - Universal app runs on iPad, iPhone, iPod touch, and the new MacBook with M1 processor. - Supports all device orientations. All screens support zoom and pan. - Make bearing observations to perform compass checks. - Archive saved observations and restore observation data from an archive. - Includes quick start guide, usage examples, and other documentation to learn celestial navigation. - Print/Output Nautical Almanac pages, observation reports, and other app documentation. ezAlmanacOne will help you perform celestial navigation exactly as it has been done for hundreds of years. It produces all Nautical Almanac (1960-2059) and Pub. 229 tables exactly as you are used to seeing them in the printed form. All tables can be accessed directly for manual usage if you choose to do so. Since they are produced by the software they support zooming and panning, and you can highlight in the tables to easily find the correct value to use. Most users, however, will prefer to let ezAlmanacOne do all of the work. Simply enter the basic sight parameters, make and enter your observations, and ezAlmanacOne will do the rest. It performs all of the steps to correct your observation, find GP of the object, do the sight reduction, and plot the LOP. No steps are skipped and all details are shown. Click where the LOPs cross in the plot and you have found your fix! Besides finding your fix, ezAlmanacOne is one of the best tools available to perform compass checks from a bearing observation of one of the navigational bodies. The compass check function supports checking up to 5 devices from a single bearing observation. ezAlmanacOne will also create a report of your compass check that can be saved as a PDF file or printed for the ships records. Celestial navigation instructors love ezAlmanacOne because it does celestial navigation exactly as they teach it. Values obtained from the Nautical Almanac and Pub. 229 are clearly identified with an icon of the book. When you press the book icon you are taken to the page that has that value with the row, column and value highlighted. Even when ezAlmanacOne is doing all the work, it can teach you how to do it manually using the books. For manual celestial navigation you can generate and print Nautical Almanac pages to use as a backup on a passage. You can even print the sight reduction forms and plotting sheets you will need. ezAlmanacOne performs all astronomical calculations using the NOVAS 3.1 software from the US Naval Observatory (USNO) and a JPL ephemeris that covers the years 1960 through 2059. It also implements WMM-2020, the latest World Magnetic Model software available from NOAA, to compute magnetic declination. Since all calculations are performed in the software, ezAlmanacOne is fully functional with no dependency on the internet.
Screenshots
Verdict
The clearest difference is review sentiment: EZ Celestial Navigation at 100% against WMM PAL's 50%. EZ Celestial Navigation also leads on rating (4.9 vs 2.0) and in-app purchases (none vs 1). WMM PAL's advantage is price ($2.99 vs $29.99). On ads, monetization model and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
WMM PAL costs $2.99 and EZ Celestial Navigation $29.99 up front. WMM PAL sells 1 one-off in-app purchase. EZ Celestial Navigation asks for nothing beyond the download.
EZ Celestial Navigation holds the better App Store score, 4.9 against 2.0. That said, the two scores are not equally well evidenced: EZ Celestial Navigation has 26 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of WMM PAL's written reviews are positive against 100% of EZ Celestial Navigation's.
WMM PAL ships an update every 14 months, EZ Celestial Navigation monthly. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.
| Parameter | WMM PAL | EZ Celestial Navigation |
|---|---|---|
| Price | $2.99 — better | $29.99 |
| Rating | 2.0 (1 ratings) | 4.9 (26 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 26 — better |
| Update frequency | Every 14 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Best chart rank | — | #113 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 153 MB |
| Age rating | 4+ | 4+ |
| Developer | Digilog Corporation | EZ Celestial LLC |
Customer experience
WMM PAL
EZ Celestial Navigation
In-app purchases
WMM PAL
- MyLocationToken$3.99
EZ Celestial Navigation
No in-app purchases
Questions
Is WMM PAL free?
Is EZ Celestial Navigation free?
Which has better reviews, WMM PAL or EZ Celestial Navigation?
Do WMM PAL or EZ Celestial Navigation have ads?
Which is updated more often, WMM PAL or EZ Celestial Navigation?
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