Apnea Tables Trainer is a lifestyle app designed for spearfishers and freedivers to train their breath holding in static air. The app is easy to use and works automatically. To individualize the training, users must first attempt to hold their breath for as long as possible and save the result. Warm-up attempts are suggested before the maximum attempt. Based on the maximum breath holding, the app will automatically calculate the training tables, including table CO2 and table O2.

Table CO2 helps to accustom the brain to the high level of CO2, while table O2 helps to accustom the brain to the lower level of O2. The table CO2 is a series of static breath holdings with a decrease in rest time at a constant breath holding time. The table O2 is a series of static breath holdings with an increase in breath holding time at a constant rest time.

The app is integrated with the Apple Health app to sync your workouts. Overall, Apnea Tables Trainer is a great app for those looking to improve their breath holding skills and is highly recommended for spearfishers and freedivers.