New in 1.4: the Star Codex — a browsable library of every word in the galaxy. Search and filter by category, revisit each discovered word's hint and science fact, check your mastery level, and hear any word pronounced or spelled out letter by letter. Plus new Practice Missions: launch a focused five-word recall session on any category, built automatically from the words you find hardest. Also fixes a small button-label wrapping issue during missions.

Version 1.3 adds Today's Flight Plan in Mission Control. AstroSpell now recommends the best next practice mode from local progress, missed words, review due dates, and accuracy, with focus words and estimated practice time.

Introducing Mission Control: hear every word spoken aloud, plus an adaptive Spell-It mode that remembers the words you miss and brings them back until they stick. A sharper daily challenge, a cleaner word list, and full accessibility round out the biggest AstroSpell update yet.

What's New in AstroSpell 1.1 This update unlocks the astronomy knowledge that was previously trapped behind a single fleeting overlay - and adds the endless, play-on-your-terms mode players have asked for. Star Codex - your offline astronomy library. Browse all 171 of AstroSpell's curated entries in one place. Search across terms, hints, and facts; filter by any of the 11 categories; and sort by storyline, A->Z, or difficulty. Every word you've decoded - in the campaign, the Daily Challenge, or Free Play - reveals its full, hand-written science fact. Words you haven't cracked yet stay hidden so nothing gets spoiled. Everything you'd already cleared is filled in automatically the moment you update. Free Play (Endless mode). A brand-new, unlimited run on a single tank of oxygen - no campaign gating, no daily cap. Pick a difficulty band (Warm-Up, Standard, Expert, or Mixed); words never repeat until you've seen them all. Your best score and longest run are tracked for each band. Five new achievements. Three "Archivist" milestones for decoding 25, 75, and every entry in the Star Codex, plus two badges for long Endless runs. Everything stays fully offline - no account, no subscription, no ads, no tracking.