iMariner Celestial Navigation
ASO Keyword Dashboard
Tracking 84 keywords for iMariner Celestial Navigation in Apple App Store
iMariner Celestial Navigation tracks 84 keywords (3 keywords rank; 81 need traction). Key metrics: 33% top-10 coverage, opportunity 70.1, difficulty 38.0, best rank 9.
Tracked keywords
84
3 ranked • 81 not ranking yet
Top 10 coverage
33%
Best rank 9 • Latest leader —
Avg opportunity
70.1
Top keyword: navigation
Avg difficulty
38.0
Lower scores indicate easier wins
Opportunity leaders
- 68.2
navigation
Opportunity: 73.0 • Difficulty: 43.6 • Rank —
Competitors: 122
- 62.6
preparation
Opportunity: 73.0 • Difficulty: 37.7 • Rank —
Competitors: 16
- 68.0
calculate
Opportunity: 73.0 • Difficulty: 41.8 • Rank —
Competitors: 89
- 67.9
precise
Opportunity: 73.0 • Difficulty: 42.3 • Rank —
Competitors: 148
- 64.5
completed
Opportunity: 73.0 • Difficulty: 39.5 • Rank —
Competitors: 73
Unranked opportunities
navigation
Opportunity: 73.0 • Difficulty: 43.6 • Competitors: 122
preparation
Opportunity: 73.0 • Difficulty: 37.7 • Competitors: 16
calculate
Opportunity: 73.0 • Difficulty: 41.8 • Competitors: 89
precise
Opportunity: 73.0 • Difficulty: 42.3 • Competitors: 148
completed
Opportunity: 73.0 • Difficulty: 39.5 • Competitors: 73
High competition keywords
time
Total apps: 189,921 • Major competitors: 2,981
Latest rank: — • Difficulty: 55.0
access
Total apps: 181,150 • Major competitors: 2,664
Latest rank: — • Difficulty: 55.0
best
Total apps: 124,558 • Major competitors: 2,643
Latest rank: — • Difficulty: 53.9
data
Total apps: 97,664 • Major competitors: 1,018
Latest rank: — • Difficulty: 51.5
take
Total apps: 95,202 • Major competitors: 1,748
Latest rank: — • Difficulty: 52.3
All tracked keywords
Includes opportunity, difficulty, rankings and competitor benchmarks
| Major Competitors | |||||||
|---|---|---|---|---|---|---|---|
| celestial | 70 | 100 | 29 | 47 701 competing apps Median installs: 850 Avg rating: 4.2 | 9 | 9 | 14 major competitor apps |
| latitude | 69 | 100 | 28 | 47 654 competing apps Median installs: 400 Avg rating: 3.9 | 27 | 27 | 4 major competitor apps |
| easy navigation | 71 | 100 | 34 | 54 1,717 competing apps Median installs: 400 Avg rating: 4.1 | 111 | 111 | 8 major competitor apps |
| best | 66 | 100 | 54 | 85 124,558 competing apps Median installs: 550 Avg rating: 4.1 | — | — | 2,643 major competitor apps |
| navigation | 73 | 100 | 44 | 68 12,619 competing apps Median installs: 400 Avg rating: 4.0 | — | — | 122 major competitor apps |
| 70 | 100 | 48 | 76 37,929 competing apps Median installs: 500 Avg rating: 4.1 | — | — | 568 major competitor apps | |
| moon | 71 | 100 | 35 | 55 2,096 competing apps Median installs: 900 Avg rating: 4.2 | — | — | 59 major competitor apps |
| simply | 69 | 100 | 48 | 77 44,465 competing apps Median installs: 450 Avg rating: 4.1 | — | — | 597 major competitor apps |
| save | 67 | 100 | 53 | 83 93,506 competing apps Median installs: 650 Avg rating: 4.1 | — | — | 1,629 major competitor apps |
| time | 65 | 100 | 55 | 88 189,921 competing apps Median installs: 450 Avg rating: 4.1 | — | — | 2,981 major competitor apps |
| take | 67 | 100 | 52 | 83 95,202 competing apps Median installs: 500 Avg rating: 4.1 | — | — | 1,748 major competitor apps |
| access | 65 | 100 | 55 | 87 181,150 competing apps Median installs: 450 Avg rating: 4.1 | — | — | 2,664 major competitor apps |
| complete | 68 | 100 | 50 | 81 72,735 competing apps Median installs: 550 Avg rating: 4.1 | — | — | 1,229 major competitor apps |
| book | 69 | 100 | 48 | 77 40,534 competing apps Median installs: 350 Avg rating: 4.1 | — | — | 429 major competitor apps |
| plus | 72 | 100 | 47 | 70 16,085 competing apps Median installs: 750 Avg rating: 4.1 | — | — | 475 major competitor apps |
| want | 67 | 100 | 52 | 82 83,387 competing apps Median installs: 550 Avg rating: 4.1 | — | — | 1,442 major competitor apps |
| internet | 69 | 100 | 48 | 76 39,548 competing apps Median installs: 500 Avg rating: 4.0 | — | — | 573 major competitor apps |
| know | 68 | 100 | 52 | 80 65,123 competing apps Median installs: 550 Avg rating: 4.1 | — | — | 1,159 major competitor apps |
| following | 70 | 100 | 46 | 75 30,533 competing apps Median installs: 500 Avg rating: 4.0 | — | — | 478 major competitor apps |
| made | 70 | 100 | 49 | 76 36,190 competing apps Median installs: 500 Avg rating: 4.1 | — | — | 582 major competitor apps |
| preparation | 73 | 100 | 38 | 63 5,794 competing apps Median installs: 350 Avg rating: 4.1 | — | — | 16 major competitor apps |
| light | 72 | 100 | 44 | 71 19,312 competing apps Median installs: 550 Avg rating: 4.0 | — | — | 265 major competitor apps |
| calculate | 73 | 100 | 42 | 68 12,269 competing apps Median installs: 350 Avg rating: 4.0 | — | — | 89 major competitor apps |
| calculation | 72 | 100 | 38 | 62 5,171 competing apps Median installs: 300 Avg rating: 4.0 | — | — | 31 major competitor apps |
| two | 70 | 100 | 46 | 75 31,406 competing apps Median installs: 450 Avg rating: 4.1 | — | — | 438 major competitor apps |
App Description
Also embedded : nautical almanac (sun, moon, planets, starts) and astronomical computation (no more need for HO-249/HO-229 tables)
- displays almanac informations : Sun, Moon, Venus, Mars, Jupiter, Saturn and 92 brightest stars. At this step, you can use these almanac data with HO.249 tables, if you want to reduce manually.
- reduces a sight : getting your observed altitude and the precise time, it calculate Intercept and Azimut. You don't need any calculation ! Simply report Intercept and Azimut to your navigational chart.
- You can save your observations by passages and send them by email in CSV format
- take a fix : with two sights, iMariner is able to calculate your position (latitude/longitude)
- meridian passage : iMariner helps you to take observations mandatory to know your position (latitude/longitude)
- sight preparation : iMariner proposes you the best objects, here position (azimut and elevation), and the approximate time of the day the observation can take (nautical_twilight or nautical dawn).
iMariner is a standalone application. It doesn't require internet connection. It is light and calculations are optimized to save energy on your boat.
Includes a solar compass (and moon compass too).
REFERENCES :
iMariner has been inspirated by astronomical works of the following people.
Brightest Stars Catalog
Extraction of 92 stars >= 2.5 Mag from the vizier catalog, completed with some stars and star names.
V/53A Catalogue of the Brightest Stars (Ochsenbein+ 1988)
This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France
vizier.u-strasbg.fr
=============================
Le catalogue des etoiles les plus brillantes Catalogue of the brightest stars
Ochsenbein F., Halbwachs J.L. =1987BICDS..32...83O
Ochsenbein F., Acker A., Legrand E., Poncelet J.M., Thuet-Fleck E.
=============================
AlgorithmsFrom the reference book Astronomical Algorithms by Jean Meeus
Planets : VSOP87D theoryTables extracted from ftp://ftp.imcce.fr/pub/ephem/planets/vsop87/ and adapted to Objective-C.
Bretagnon P., Francou G., : 1988, Astron. Astrophys., 202, 309.
Pierre Bretagnon, Gerard Francou Bureau des Longitudes
77, Avenue Denfert-Rochereau F75014, Paris, France
Moon : ELP2000 theory
The lunar ephemeris ELP2000 M. Chapront-