# Radar Plotting vs Perpetual Nautical Almanac

Radar Plotting and Perpetual Nautical Almanac both sit at 5.0 stars, but that hides the real split: 50% of Radar Plotting's written reviews are positive against 38% of Perpetual Nautical Almanac's. Radar Plotting also leads on iOS requirement (15.0 vs 17.6). Perpetual Nautical Almanac's advantage is price ($6.99 vs $7.99). On rating, ratings volume, update cadence and ads there is nothing between them.

Radar Plotting costs $7.99 and Perpetual Nautical Almanac $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Radar Plotting against 5.0 for Perpetual Nautical Almanac. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 50% of Radar Plotting's written reviews are positive against 38% of Perpetual Nautical Almanac's.

Radar Plotting ships an update every 5 months, Perpetual Nautical Almanac every 7 months. The most recent releases landed on September 21, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Radar Plotting | Perpetual Nautical Almanac |
| --- | --- | --- |
| Price | $7.99 | **$6.99** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/radar-plotting/id1470598201/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/perpetual-nautical-almanac/id1483007345/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | **50.0% of reviews** | 37.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 7 months |
| Monetization | Paid | Paid |
| Size | 17 MB | 123 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Giacomo Gabriele](https://appshunter.io/developer/1455745031) | [RPA Technologies](https://appshunter.io/developer/1317678667) |

## What reviewers say

### Radar Plotting

[App page](https://appshunter.io/ios/app/radar-plotting/id1470598201)

This app offers advanced radar plotting for maritime navigation. It allows users to calculate critical encounter data, plan maneuvers, and analyze complex scenarios with interactive visualizations. Designed for training and decision support, it aids in understanding vessel interactions.

**Highlights:** Kinematic calculations (CPA/TCPA, aspect), True and relative speed estimation, Evasive maneuver planning with COLREG guidance, Rescue and escape scenario planning, Double-target analysis, Current and drift estimation, Interactive radar canvas with playback

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Perpetual Nautical Almanac

[App page](https://appshunter.io/ios/app/perpetual-nautical-almanac/id1483007345)

Calculate precise celestial positions for navigation from 1900 to 2050. Get real-time data on the Sun, Moon, planets, and stars, including rise/set times and atmospheric corrections.

**Highlights:** Real-time celestial body positions, Sunrise/sunset and moonrise/moonset calculations, Sunlight world map with celestial positions, Moon phase and age, Planet and star GHA/dec, Atmospheric refraction and dip corrections

**In-app purchases:** none


## Frequently asked questions

### Is Radar Plotting free?

Radar Plotting costs $7.99, with no in-app purchases.

### Is Perpetual Nautical Almanac free?

Perpetual Nautical Almanac costs $6.99, with no in-app purchases.

### Which has better reviews, Radar Plotting or Perpetual Nautical Almanac?

Radar Plotting and Perpetual Nautical Almanac are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Radar Plotting or Perpetual Nautical Almanac have ads?

Neither Radar Plotting nor Perpetual Nautical Almanac shows ads.

### Which is updated more often, Radar Plotting or Perpetual Nautical Almanac?

Radar Plotting ships an update every 5 months, and Perpetual Nautical Almanac every 7 months. Most recently, Radar Plotting was updated on September 21, 2026 and Perpetual Nautical Almanac on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*