---
title: "Perpetual Nautical Almanac - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Using the  U.S. Naval Observatory NOVAS library and solar system ephemerides from JPL, high precision positions can be calculated in real-time from 1900 to 2050.  Simply select date and time and all v"
---

# Perpetual Nautical Almanac — United States

![Perpetual Nautical Almanac App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/8d/28/0b/8d280b8f-1420-ca60-544b-b15978f08024/AppIcon-0-0-1x_U007emarketing-0-1-0-85-220.png/434x0w.png)

**Developer:** [RPA TECHNOLOGIES SL](https://apptail.io/developer/rpa-technologies-sl-GJHb)
**Category:** Navigation
**Rating:** 5.0/5 (1 ratings)
**Price:** Free
**Bundle ID:** com.rpatec.Perpetual-Almanac
**Store:** Apple App Store
**Country:** United States
**Version:** 2.5 (released 2026-09-21)
**Original Release:** 2019-10-10
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1483007345)
**AppTail Page:** [https://apptail.io/app/perpetual-nautical-almanac-jWSd/united-states](https://apptail.io/app/perpetual-nautical-almanac-jWSd/united-states)

## Perpetual Nautical Almanac Description
Using the  U.S. Naval Observatory NOVAS library and solar system ephemerides from JPL, high precision positions can be calculated in real-time from 1900 to 2050.

Simply select date and time and all values are recalculated instantly. The estimated elevation value is only needed for calculating sunrise/sunset, twilight, and moonrise/moonset.

The app provides the following functionalities:

*Aries: GHA position

*Sun: 
-GHA/dec  
- Astronomical dawn, nautical dawn, civil dawn, sunrise, sunset, civil dusk, nautical dusk, astronomical dusk, and meridian passage at Greenwich.
- Semidiameter
- Sunlight world map with the Sun and the Moon position.

*Moon: 
- GHA/dec
- Moonrise/moonset and meridian passage at Greenwich.
- Semidiameter
- Moon phase and age of the Moon.

*Planets:
- GHA/dec for Venus, Mars, Jupiter, and Saturn.

*Stars:
- Magnitude, SHA/dec of 99 stars ordered by SHA.

*Corrections:
- Correction for the atmospheric refraction.
- Correction for the dip of the horizon.
- Parallax correction for the Moon, the Sun, Venus, and Mars.

## Perpetual Nautical Almanac Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/4d/fc/85/4dfc854e-f316-d419-00fd-726621921ea1/2a754dcc-554a-46d7-be55-668bfaa2929e_IMG_0006.PNG/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/8d/4f/e6/8d4fe6dd-f565-632b-66d9-82dee754805d/9fc79a9e-0d97-4a62-8cf3-5adb0ec3417a_IMG_0007.PNG/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/45/9f/5a/459f5a3f-a5a9-c8cf-d93a-b339bdc5cf4a/a58a7f3f-e2a9-4839-a032-2ce8f33cd3e0_IMG_0008.PNG/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/92/c7/26/92c72628-2e17-7b31-3f85-cb7f0ddf3d7f/4a87db1c-1d0a-4c25-bee5-5cc4fbfed9cc_IMG_0009.PNG/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/26/44/bf/2644bfdd-16ec-1fc6-7b2a-f91dcff02b77/846271cd-5172-400d-bde3-dfb8a4be6bff_IMG_0010.PNG/1242x2688.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/23/b3/ee/23b3eec7-7c91-1c54-c12e-649245779ebf/324b8e63-31ef-40fe-9ec4-21654848b68a_IMG_0011.PNG/1242x2688.png)

## Perpetual Nautical Almanac Rating Breakdown in United States
- 5 stars: 1 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## Perpetual Nautical Almanac Reviews in United States

### ***** "Latest Update - Big Improvement"
Replaces the need for your physical almanac. Gives you all the data you need to calculate your LOP.
-- Johnbogen, 2024-10-01

### *---- "Won’t open"
App won’t open on iPhone 11 with OS 14.6.  I want a refund!
-- hghytgj, 2021-07-18

### *---- "Not worth the money"
Took a chance and found it wasn’t worth the money. Zero instructions and no support via the app or on the developer’s website.
Spend your money on something else.
-- fosters2, 2021-03-14

[View all Perpetual Nautical Almanac reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)


## Perpetual Nautical Almanac Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Nigeria | Navigation | #40 |
| Top Paid | Australia | Navigation | #50 |
| Top Paid | Ukraine | Navigation | #53 |
| Top Paid | Vietnam | Navigation | #54 |
| Top Paid | Egypt | Navigation | #58 |
| Top Paid | Philippines | Navigation | #72 |
| Top Paid | South Korea | Navigation | #86 |
| Top Paid | Taiwan | Navigation | #91 |
| Top Paid | Romania | Navigation | #95 |
| Top Paid | Kazakhstan | Navigation | #97 |
| Top Paid | Poland | Navigation | #101 |
| Top Paid | Indonesia | Navigation | #105 |
| Top Paid | Azerbaijan | Navigation | #108 |
| Top Paid | Russia | Navigation | #112 |
| Top Paid | Peru | Navigation | #120 |
| Top Paid | Portugal | Navigation | #122 |
| Top Paid | India | Navigation | #123 |
| Top Paid | Thailand | Navigation | #125 |
| Top Paid | Greece | Navigation | #138 |
| Top Paid | Brazil | Navigation | #153 |
| Top Paid | Malaysia | Navigation | #155 |
| Top Paid | Ireland | Navigation | #157 |
| Top Paid | Argentina | Navigation | #161 |
| Top Paid | Ecuador | Navigation | #165 |
| Top Paid | Türkiye | Navigation | #175 |
| Top Paid | China | Navigation | #177 |
| Top Paid | United Arab Emirates | Navigation | #189 |
| Top Paid | Spain | Navigation | #200 |
| Top Paid | Chile | Navigation | #214 |
| Top Paid | Mexico | Navigation | #220 |
| Top Paid | Saudi Arabia | Navigation | #232 |
| Top Paid | Israel | Navigation | #233 |
| Top Paid | South Africa | Navigation | #236 |
| Top Paid | Norway | Navigation | #240 |


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## Perpetual Nautical Almanac Available In
- [United States](https://apptail.io/app/perpetual-nautical-almanac-jWSd/united-states)
- [Canada](https://apptail.io/app/perpetual-nautical-almanac-jWSd/canada)
- [United Kingdom](https://apptail.io/app/perpetual-nautical-almanac-jWSd/united-kingdom)
- [Austria](https://apptail.io/app/perpetual-nautical-almanac-jWSd/austria)
- [Australia](https://apptail.io/app/perpetual-nautical-almanac-jWSd/australia)
- [Azerbaijan](https://apptail.io/app/perpetual-nautical-almanac-jWSd/azerbaijan)
- [Belgium](https://apptail.io/app/perpetual-nautical-almanac-jWSd/belgium)
- [Brazil](https://apptail.io/app/perpetual-nautical-almanac-jWSd/brazil)
- [Belarus](https://apptail.io/app/perpetual-nautical-almanac-jWSd/belarus)
- [Belize](https://apptail.io/app/perpetual-nautical-almanac-jWSd/belize)
- [Switzerland](https://apptail.io/app/perpetual-nautical-almanac-jWSd/switzerland)
- [Chile](https://apptail.io/app/perpetual-nautical-almanac-jWSd/chile)
- [China](https://apptail.io/app/perpetual-nautical-almanac-jWSd/china)
- [Colombia](https://apptail.io/app/perpetual-nautical-almanac-jWSd/colombia)
- [Cyprus](https://apptail.io/app/perpetual-nautical-almanac-jWSd/cyprus)
- [Czechia](https://apptail.io/app/perpetual-nautical-almanac-jWSd/czechia)
- [Germany](https://apptail.io/app/perpetual-nautical-almanac-jWSd/germany)
- [Denmark](https://apptail.io/app/perpetual-nautical-almanac-jWSd/denmark)
- [Algeria](https://apptail.io/app/perpetual-nautical-almanac-jWSd/algeria)
- [Ecuador](https://apptail.io/app/perpetual-nautical-almanac-jWSd/ecuador)
- [Estonia](https://apptail.io/app/perpetual-nautical-almanac-jWSd/estonia)
- [Egypt](https://apptail.io/app/perpetual-nautical-almanac-jWSd/egypt)
- [Spain](https://apptail.io/app/perpetual-nautical-almanac-jWSd/spain)
- [Finland](https://apptail.io/app/perpetual-nautical-almanac-jWSd/finland)
- [France](https://apptail.io/app/perpetual-nautical-almanac-jWSd/france)
- [Greece](https://apptail.io/app/perpetual-nautical-almanac-jWSd/greece)
- [Hong Kong SAR China](https://apptail.io/app/perpetual-nautical-almanac-jWSd/hong-kong)
- [Croatia](https://apptail.io/app/perpetual-nautical-almanac-jWSd/croatia)
- [Hungary](https://apptail.io/app/perpetual-nautical-almanac-jWSd/hungary)
- [Indonesia](https://apptail.io/app/perpetual-nautical-almanac-jWSd/indonesia)
- [Ireland](https://apptail.io/app/perpetual-nautical-almanac-jWSd/ireland)
- [Israel](https://apptail.io/app/perpetual-nautical-almanac-jWSd/israel)
- [India](https://apptail.io/app/perpetual-nautical-almanac-jWSd/india)
- [Italy](https://apptail.io/app/perpetual-nautical-almanac-jWSd/italy)
- [Japan](https://apptail.io/app/perpetual-nautical-almanac-jWSd/japan)
- [South Korea](https://apptail.io/app/perpetual-nautical-almanac-jWSd/south-korea)
- [Kazakhstan](https://apptail.io/app/perpetual-nautical-almanac-jWSd/kazakhstan)
- [Lebanon](https://apptail.io/app/perpetual-nautical-almanac-jWSd/lebanon)
- [Lithuania](https://apptail.io/app/perpetual-nautical-almanac-jWSd/lithuania)
- [Mexico](https://apptail.io/app/perpetual-nautical-almanac-jWSd/mexico)
- [Malaysia](https://apptail.io/app/perpetual-nautical-almanac-jWSd/malaysia)
- [Nigeria](https://apptail.io/app/perpetual-nautical-almanac-jWSd/nigeria)
- [Netherlands](https://apptail.io/app/perpetual-nautical-almanac-jWSd/netherlands)
- [Norway](https://apptail.io/app/perpetual-nautical-almanac-jWSd/norway)
- [New Zealand](https://apptail.io/app/perpetual-nautical-almanac-jWSd/new-zealand)
- [Peru](https://apptail.io/app/perpetual-nautical-almanac-jWSd/peru)
- [Philippines](https://apptail.io/app/perpetual-nautical-almanac-jWSd/philippines)
- [Poland](https://apptail.io/app/perpetual-nautical-almanac-jWSd/poland)
- [Portugal](https://apptail.io/app/perpetual-nautical-almanac-jWSd/portugal)
- [Romania](https://apptail.io/app/perpetual-nautical-almanac-jWSd/romania)
- [Russia](https://apptail.io/app/perpetual-nautical-almanac-jWSd/russia)
- [Saudi Arabia](https://apptail.io/app/perpetual-nautical-almanac-jWSd/saudi-arabia)
- [Sweden](https://apptail.io/app/perpetual-nautical-almanac-jWSd/sweden)
- [Thailand](https://apptail.io/app/perpetual-nautical-almanac-jWSd/thailand)
- [Türkiye](https://apptail.io/app/perpetual-nautical-almanac-jWSd/turkey)
- [Taiwan](https://apptail.io/app/perpetual-nautical-almanac-jWSd/taiwan)
- [Ukraine](https://apptail.io/app/perpetual-nautical-almanac-jWSd/ukraine)
- [Vietnam](https://apptail.io/app/perpetual-nautical-almanac-jWSd/vietnam)
- [United Arab Emirates](https://apptail.io/app/perpetual-nautical-almanac-jWSd/united-arab-emirates)
- [South Africa](https://apptail.io/app/perpetual-nautical-almanac-jWSd/south-africa)
- [Armenia](https://apptail.io/app/perpetual-nautical-almanac-jWSd/armenia)
- [Argentina](https://apptail.io/app/perpetual-nautical-almanac-jWSd/argentina)

---

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