Assess your lung capacity by measuring how long you can hold your breath. This app provides instant results indicating your lung function. Always consult a healthcare professional before use, especially if you have pre-existing health conditions.





10+ similar apps compared and reviewed
Whether you want more options like Rebirth International OM or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.





Assess your lung capacity by measuring how long you can hold your breath. This app provides instant results indicating your lung function. Always consult a healthcare professional before use, especially if you have pre-existing health conditions.




Access premium Catholic video series from Bishop Robert Barron on any device, anytime. Explore faith-based documentaries and topical programs with a subscription. Stay updated with new releases and exclusive content.




Manage all your pet's care needs in one place. Connect with veterinarians, groomers, and other service providers to book appointments, store medical records, and receive timely reminders for a healthier, happier pet.