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<5K
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Est. IAP revenue / month · US
<$5K
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Apple's Top Grossing chart — all apps ranked by revenue (purchases + subscriptions).
Ratings count — US
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Listing
Dear user! If you interested in learning about the technical aspects of the marine business - try to use our app. In our app you will find numerous interactive lessons and tests. All our courses provided with numerous illustrations. If you are a sailor or a technical engineer at a shipping company, you will be interested in improving your skills and knowledge.
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