--- title: "Meridian Nav - Bewertungen, Einnahmen und Downloads in Südkorea | Apple App Store" description: "Meridian is a celestial navigation toolkit built at sea by a working deck officer — fully offline, because mid-ocean is exactly where you need it. SIGHT REDUCTION Compute Hc, Zn and intercept for the" --- # Meridian Nav — Südkorea ![Meridian Nav App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/51/31/47/513147df-29ff-98e1-f77c-f885445bc97f/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png) **Developer:** [SEUNGHYEOK CHOI](https://apptail.io/de/developer/seunghyeok-choi-LgsHlc) **Category:** Navigation **Rating:** 5.0/5 (1 ratings) **Price:** Free **Bundle ID:** com.hyeok2k.meridian **Store:** Apple App Store **Country:** Südkorea **Version:** 1.3.0 (released 2026-07-14) **Original Release:** 2026-06-02 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/kr/app/app/id6774504786) **AppTail Page:** [https://apptail.io/de/app/meridian-nav-xIhA/south-korea](https://apptail.io/de/app/meridian-nav-xIhA/south-korea) ## Meridian Nav Description Meridian is a celestial navigation toolkit built at sea by a working deck officer — fully offline, because mid-ocean is exactly where you need it. SIGHT REDUCTION Compute Hc, Zn and intercept for the Sun, Moon, four planets and 63 navigational stars. Enter your DR position, date/time and sextant altitude — get your line of position. COMPASS ERROR Check gyro error by azimuth of any celestial body — the daily routine, without the almanac and tables. Magnetic variation (WMM2025) is built in for magnetic compass work. STAR FINDER A polar sky-dome view shows exactly which bodies are observable right now from your position — plan your twilight sights before stepping out on the bridge wing. Includes an azimuth-scatter view for picking the best LOP geometry. SUN / MOON Rise, set, meridian passage and twilight times for any position and date. MARINE CHART — FULLY OFFLINE A custom offline vector chart with world time-zone (ZD) boundaries, DST awareness, ports and waypoint routes. Import route files (.rtz / .rou) straight from your ECDIS. CLOCK PLAN Generate the entire voyage's retard/advance schedule from your route — including DST transitions and solar-zone departures. Reorder or edit the changes, then export a clean calendar-style PDF or Excel notice, ready to post on board. UNIT CONVERTER The conversions a navigator actually uses, in two taps. ACCURACY & VALIDATION Every body — Sun, Moon, planets and 63 navigational stars — is cross-checked against JPL ephemeris data (the same source behind the official Nautical Almanac) to arc-minute agreement. Star positions are computed for the current date from the ESA Hipparcos catalogue. Sun azimuth verified at sea against a ship's bridge calculator, and against NOAA's solar calculator (0.000° difference). MADE FOR Deck officers who want a fast backup and sanity check, cadets and officers studying celestial navigation, and anyone who believes a navigator should still be able to find a ship without a satellite. No account. No ads. No subscription. No internet required. One-time purchase. IMPORTANT Meridian is a reference and training aid for celestial navigation. It is not a certified navigation system and does not replace official nautical publications, charts, or type-approved equipment. ## Meridian Nav Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/74/8c/3f/748c3fcd-ffa0-3dac-8154-38bf32fa8c22/meridian_appstore_02_1242x2688.jpg/1242x2688.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/5a/94/4f/5a944f37-5c1e-6660-a429-4977b6c7b578/meridian_appstore_03_1242x2688.jpg/1242x2688.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/23/54/83/235483fc-e62f-d691-b141-c6974add6fec/meridian_appstore_05_1242x2688.jpg/1242x2688.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/71/ee/da/71eeda76-6c8e-09a1-6f39-0f71d159e6b1/meridian_appstore_04_1242x2688.jpg/1242x2688.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f2/2b/60/f22b6024-3fc2-f9f3-f4d8-ba635f75ec3b/meridian_appstore_06_1242x2688.jpg/1242x2688.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/31/70/46/31704645-c0d0-7d58-8780-427d0c222189/meridian_appstore_01_1242x2688.jpg/1242x2688.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/94/2c/32/942c3205-8d6c-37ad-1030-6d0984dacda7/meridian_appstore_07_1242x2688.jpg/1242x2688.png) - [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/19/d1/64/19d16478-6300-dfb5-fcd1-253a847c6b22/meridian_appstore_08_1242x2688.jpg/1242x2688.png) - [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f2/b0/ea/f2b0ea15-1924-43ba-a5c1-aad4770aef8e/meridian_appstore_09_1242x2688.jpg/1242x2688.png) - [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/67/cb/0a/67cb0a7c-8d0b-4617-3dff-98669efff3f8/meridian_appstore_10_1242x2688.jpg/1242x2688.png) ## Meridian Nav Rating Breakdown in Südkorea - 5 stars: 1 (100%) - 4 stars: 0 (0%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 0 (0%) ## Meridian Nav Store Rankings | Chart | Country | Category | Rank | |-------|---------|----------|------| | Top Bezahlt | Südkorea | Navigation | #10 | | Top Umsatz | Südkorea | Navigation | #75 | --- ## About AppTail [AppTail](https://apptail.io/de) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. 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