Perpetual Nautical Almanac
Perpetual Nautical Almanac is made and published by RPA Technologies. AppBrain is an independent app data site and isn't affiliated with RPA Technologies. The app name, icon, screenshots and description belong to RPA Technologies and are shown as published on the App Store.
AppBrain's verdict
Established- Rating on App Store
- 5.00
- 1 ratings
- Last updated
- September 21, 2026
- Size
- 25.7 MB
It doesn't have enough ratings yet to judge what users think. Its best ranking is #85 in Top Paid, Navigation in South Korea.
User feedback
Ratings and reviews on the App StoreComments on Perpetual Nautical Almanac for iOS
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Store listing
By RPA Technologies, from the App Store
Description by RPA Technologies Written by the developer, not by AppBrain. Click to read.
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.
Safety and technology
Found in the app by AppBrain- Price
- $6.99
- App size
- 25.7 MB
- Content rating
- Everyone
Technologies used by Perpetual Nautical Almanac
Releases
Updates seen on the App Store- Version
- 2.5
- Launched
- October 2019
No changelog data
Alternatives
Similar apps and more from RPA TechnologiesAlternatives to Perpetual Nautical Almanac
Rankings
App Store top charts- Highest rank
- #85
- Chart
- Top Paid
- Navigation
- Country
- South Korea
App Store Rankings for Perpetual Nautical Almanac
Top rankings
| Rank | Country | Category | List |
|---|---|---|---|
| 85 | South Korea | Navigation | Top Paid |
Ranking history in South Korea
About the app and developer
About Perpetual Nautical Almanac
Perpetual Nautical Almanac is a navigation app developed by RPA Technologies.
User Ratings
Perpetual Nautical Almanac is rated 5.00 out of 5 stars. The rating is based on one rating ratings.
App Information
Perpetual Nautical Almanac costs $6.99. The app size is 25.67 MB. The latest version available is 2.5. The last update was on September 21, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since October 2019.
Developer information for RPA Technologies
Address: