This app generates and reads number sequences based on mathematical rules you set. It offers adjustable voice pitch, rate, and gender, with features designed to help relax your brain and reduce stress through visualization and auditory focus.





5+ similar apps compared and reviewed
Whether you want more options like すぐれん or a completely different take on the same concept, our curated list of 5+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.





This app generates and reads number sequences based on mathematical rules you set. It offers adjustable voice pitch, rate, and gender, with features designed to help relax your brain and reduce stress through visualization and auditory focus.






This app helps pet owners manage their pet's health and daily life. It offers veterinary consultations, reminders for important events like vaccinations, and tools to track diet and well-being. Users can also find pet-friendly locations and store cherished memories.





This app facilitates deeper communication between partners by having them answer shared questions. It provides customized feedback and suggestions from a licensed therapist to help strengthen and improve relationships across various categories.


Track your orthodontic journey with this app. Monitor your braces wear time, manage appointments, and visualize your progress through weekly photo uploads. Stay on top of your treatment milestones with a dedicated calendar.


This app provides a variety of high-quality soothing sounds to help infants fall asleep faster and stay asleep longer. It creates a calming environment that masks disruptive noises and mimics womb sounds, offering a simple, one-tap solution for parents. Features include a sleep timer and the option to remove ads and enable background play.