Master the Doomsday Algorithm to instantly calculate the day of the week for any historical date. Engage in timed challenges, compete against others, and practice various calculation methods to improve your speed and accuracy.





128+ iOS apps & games curated and reviewed
With an average user rating of 4.5★, the doomsday trainer category is one of the App Store's strongest. Browse all 128+ apps and games we track, sorted so the most loved ones surface first.





Master the Doomsday Algorithm to instantly calculate the day of the week for any historical date. Engage in timed challenges, compete against others, and practice various calculation methods to improve your speed and accuracy.






Master the art of quickly determining the day of the week for any date between 1800 and 2200. Practice your skills, beat your personal best times, and save custom mnemonics for significant dates.





This app helps personal trainers manage and train clients efficiently. It allows for creating custom workout plans, tracking progress, and engaging clients through a centralized platform. Streamline your fitness business and keep clients motivated towards their goals.


Escape a zombie-infested city as a nuclear missile approaches. Drive and shoot your way to survival, collecting unique survivors and using absurd weapons. Unleash devastating WMDs to overcome the apocalypse.


Lead survivors on a strategic journey across a post-apocalyptic America reclaimed by nature. Manage your train, explore a lush jungle world, and make critical choices to ensure your crew's survival against mutated creatures and environmental hazards.


Lead a squad of artificially created soldiers to reclaim a shattered world from alien invaders. Engage in dynamic shooter battles with strategic depth, customize your NIKKE, and uncover ancient secrets in an immersive post-apocalyptic story.


Explore a vast post-apocalyptic world filled with dangers and opportunities. Scavenge, build, and survive against zombies and harsh environments. Connect with other survivors to rebuild society and face new threats, or embrace a half-zombie existence.


This AI-powered fitness app creates personalized workout plans for home, gym, or hybrid training. It adapts to your goals, schedule, and feedback, offering real-time adjustments and AI coaching to help you progress and stay consistent.


Run through challenging obstacle courses, smashing barriers and defeating enemies. Collect power-ups and upgrade your muscles to become the strongest runner. Engage in thrilling arm-wrestling boss battles to prove your might.


Easily view class schedules and book your next fitness session. Stay updated with the latest offerings from your favorite gym.


Lead the Smith family in an epic battle against alien invaders. Build your base, train an army of Roger clones with unique weapons, and fight to reclaim Earth. Engage in RPG combat and strategic gameplay to save the world and prove your dominance in the arena.


Survive a post-apocalyptic wasteland by tapping to build essential prepper skills, upgrade weapons, and battle zombies and monsters. Explore exotic cities, defend your family, and become the ultimate doomsday survivor in this incremental clicker adventure.


Lead a crisis control bureau in a dystopian future where mysterious meteorites have caused an apocalypse. Recruit and control powerful outlaws, known as Sinners, to protect the city from mutated monsters and salvage hope.


Survive a zombie apocalypse by strategically deploying soldiers and upgrading weapons. Explore ruins for resources, complete missions, and defend the city to save humanity from the undead.


Race through a doomsday scenario as the world ends. Choose from unique cars, upgrade them, and evade obstacles like falling stones and flying saucers. Experience a thrilling escape with no rules or regulations.


Navigate a post-nuclear wasteland, battling mutants and desperate survivors. This text-based interactive novel puts your choices at the forefront, shaping your journey through a world of danger and difficult decisions. Forge alliances or make enemies as you decide your path to survival.


Manage your family's survival in a post-apocalyptic world. Gather resources, make tough moral choices, and defend your underground shelter from threats. Strategize combat and develop your family's skills to endure the harsh new reality.


Tap to build and expand an underground shelter to house survivors after global destruction. Grow your bunker, earn coins, and discover quirky surprises. Destroy and rebuild the world repeatedly for escalating profits.


Experience a futuristic racing adrenaline rush with gravity-defying tracks and powerful hovercraft. Engage in intense battles with AI opponents using a variety of weapons and upgrades. Master quick-to-learn controls for challenging, high-speed gameplay.

