Best D alternatives: apps like D-day Counter - Countdowns

Tikkle: Tiny Focus, Big Growth

Pomodoro Focus Timer Rewards

Free

This app uses a calm focus timer to help you stay present and complete sessions. As you focus, a tiny character grows and unlocks short adventure stories, turning your effort into visible progress and building steady habits.

Memo Paper

: 복잡함 없는 메모 체크리스트

Free

A minimalist note-taking app that functions like a single sheet of paper, allowing quick entries and seamless continuation of to-do lists. It focuses on organizing completed tasks and carrying over unfinished ones to the next note, simplifying task management without complex folders or accounts.

Clerk App

Adaptive study planning

Free

This app is an adaptive study planner designed for medical students. It integrates question banks, flashcards, review materials, and practice exams into a real-time system that adjusts your daily study plan based on your progress and deadlines. It also offers tools for focus, productivity, and community interaction.