Spira

aChatir

About this app

Spira is the complete freediving and apnea training companion — built for divers who take breath-hold seriously.

+ TRAINING TABLES
Generate CO₂ and O₂ training tables in seconds, or build fully custom breath-hold sequences. A guided timer walks you through every hold and recovery with precision.

+ AI COACHING
Get a personalized weekly training plan powered by AI, calibrated to your personal best and current fitness level. Plans adapt as you improve.

+ PROGRESS TRACKING
Every session is automatically saved. Review your hold times, contraction patterns, and heart rate data. Track personal records and watch your progress curve grow.

+ BUDDY SYSTEM
Train safely with real-time buddy monitoring. Get live alerts when your partner marks contractions during a session — safety first, always.

+ WEARABLE INTEGRATION
Connect Apple Health or Google Health Connect to enrich your sessions with heart rate and HRV data automatically.

+ SESSION HISTORY
Filter and browse your full training history. Swipe to delete, compare sessions, and spot trends across weeks and months.

Spira is designed for freedivers, spearfishers, and breath-hold athletes who want more than a stopwatch.

What’s new

+ Greets you by the time of day
+ Menus no longer slide under the status bar on newer Android phones
+ Fixes and stability improvements