The Slay the Spire 2 Companion App
The ultimate mobile app for Slay the Spire 2. Browse all 576 cards, 288 relics, and 111 enemies with tier ratings and synergies. Get AI-powered strategy coaching from Spiro. Use as a second screen while you play. Free on iOS and Android.
Complete Slay the Spire 2 Database
Every Card, Relic & Boss in Your Pocket
SpireSage is a free Slay the Spire 2 companion app with a complete searchable database of every card, relic, potion, enemy, and boss pattern, always synced to the latest game patch.
All 576 STS2 Cards, Searchable
Browse every Slay the Spire 2 card across all 5 characters. Filter by character, cost, type, and rarity. View stats, upgrades, and tier ratings at a glance.
Boss Patterns & Counter-Strategies
Every STS2 boss and elite with move patterns, HP values, and proven counter-strategies. Know exactly what to expect before every fight in Slay the Spire 2.
288 Relics, 63 Potions & More
The complete Slay the Spire 2 compendium. Every relic, potion, enchantment, orb, and keyword. Organized, searchable, and always up to date with the latest STS2 patch.
AI-Powered STS2 Strategy Coach
Meet Spiro, Your Slay the Spire 2 AI Coach
Spiro is an AI strategy coach for Slay the Spire 2 trained on real game data, community tier ratings from Mobalytics, boss patterns from wiki.gg, and expert commentary by top players Jorbs and Baalorlord.
Data sources: wiki.gg, Mobalytics, Steam, Jorbs, Baalorlord.
- ✓3 free AI strategy questions per day
- ✓Unlimited AI coaching with Pro subscription
- ✓Knowledge base updated with every STS2 patch
- ✓Context-aware answers backed by real game data
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Why Players Choose SpireSage
The Best Way to Master Slay the Spire 2
Unlike generic AI tools, SpireSage is built on real Slay the Spire 2 game data - every card stat, every boss turn, every archetype - so answers stay accurate and tied to the current patch.
Only STS2 Companion App
SpireSage is the only dedicated Slay the Spire 2 mobile companion app on iOS. No other mobile app offers a searchable card database, relic guide, boss patterns, and strategy tools for STS2 on your phone.
AI Coach with Real Game Data
Unlike generic ChatGPT, Spiro is trained on the real Slay the Spire 2 database, community tier ratings, and expert commentary from top players. It knows every card stat, boss pattern, and build archetype.
Always Up to Date
The database updates within hours of every STS2 patch. No app store update needed. Your card stats, tier ratings, and boss patterns are always current.
Works Offline
All game data is cached locally after the first load. Browse all 576 cards, 288 relics, and 111 enemies anywhere, even without an internet connection.
Frequently Asked Questions
Common questions about SpireSage - features, pricing, data freshness, offline mode, and independence from Mega Crit Games - answered briefly below.
What is SpireSage?
SpireSage is a free companion app for Slay the Spire 2 that provides a complete searchable database of all 576 cards, 288 relics, 111 enemies, and 63 potions, plus an AI strategy coach trained on real game data, community tier ratings, and expert commentary from top players.
Is SpireSage free?
Yes. The full Slay the Spire 2 game database is completely free. You get 3 AI coaching questions per day at no cost. SpireSage Pro unlocks unlimited AI coaching, strategy guides, and removes ads.
How does the AI strategy coach work?
Spiro is an AI coach for Slay the Spire 2 trained on the complete game database, community tier ratings from Mobalytics, boss patterns from wiki.gg and SlashSkill, and expert commentary from top players like Jorbs and Baalorlord. It provides context-aware strategy advice for any STS2 question.
Is the game data kept up to date?
Yes. SpireSage updates its database within hours of every Slay the Spire 2 patch. The app refreshes automatically when new data is available, with no app store update required.
Does SpireSage work offline?
Yes. After the first load, all game data (cards, relics, enemies, potions) is cached locally on your device. You can browse the entire database offline. Only the AI Chat feature requires an internet connection.
Is SpireSage affiliated with Mega Crit Games?
No. SpireSage is an independent, unofficial companion app. It is not affiliated with, endorsed by, or connected to Mega Crit Games, the developer of Slay the Spire 2.
Download the Best Slay the Spire 2 Companion App
Get SpireSage free on iOS and Android. The complete STS2 card database, relic guide, boss patterns, and AI strategy coaching in one mobile app. The best STS2 tools on your phone.