Based on the Apple App Store listing, the premium subscription is available in several tiers: Monthly (€9.90), Quarterly (€29.90), and Semi-annual (€39.90). Although specific premium-only features are not exhaustively listed in the available app descriptions, it is common for such apps to reserve the following for premium subscribers:
Removal of all banner and pop-up advertisements.
. While the base app is free, many advanced features are locked behind a Premium subscription "Astrolink Premium Mod APK"
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