Instantly compare observed celestial navigation altitudes with live calculated values. This tool helps mariners detect GPS spoofing and functions as a celestial navigation trainer, offering instant feedback without paperwork.
5.0(3 ratings)
$3.99
Best Star Pupil alternatives: apps like Star Pupil
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4.9 avg rating
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Updated October 2026
Whether you want more options like Star Pupil or a completely different take on the same concept, our curated list of 6+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.
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This app offers a comprehensive collection of Catholic prayers, devotions, and liturgical resources. It features a liturgical calendar with feast day alerts, prayers in English and Latin, the complete Book of Psalms, and guidance on indulgences. Designed for a focused prayer life, it provides a serene, ad-free experience with sacred art.
