샌드다이어리 : 공부 타이머·집중 다이어리·일기·스케쥴

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About this app

Study Timer · Focus · Diary · Canvas · Widgets in a single hourglass.

SandDiary is a study diary app that allows you to visually manage study time and record your daily activities.

■ Physics Engine Hourglass Timer

• 15 / 30 / 45 / 1-Hour Presets + Free Mode (Unlimited Stopwatch)

• Structure ideal for focusing by dividing time like a Pomodoro

• Timer that remains accurate even in the background

• Prevents screen from turning off automatically while the timer is running

• Automatic recording of study sessions · Daily study time summary

■ Diary to Record Your Day

• Study reflections · Study summaries · Emotional diaries all in one place

• 5 basic templates (Daily Review · Study Log · Emotion Record · Goal Check · Free Format)

• Custom save up to 50 personalized diary templates

• Rich editor for line thickness · Titles · Quotes · Checklist formatting

■ Canvas Handwriting · Drawing

• Pens · Highlighters · Erasers and colorful palettes

• Custom pen colors where you register your own desired colors

• Optimized for idea sketches, math solutions, and handwritten notes

• Writing feel with virtually no perceived lag thanks to the new 2026 input pipeline

■ Home / Lock Screen Widgets

• Monthly Calendar + Schedule for selected dates · To-Do

• Expand between 1 Week ↔ 1 Month, toggle tasks directly from the widget

• Widget themes synchronize with app themes in real-time

■ Aesthetic Theme System

• 3 default themes (Purple · Gold · Mint)

• The entire theme changes at once: Color + Mood (Bloom / Grain / Fog) + Typography + Motion

• A new study environment every day with Premium Theme Packs

■ Notifications to help focus

• 6 campaigns including study start reminders, return reminders, and break recommendations

• Automatically avoid Do Not Disturb times (sleep · work)

• Quiet and short. A flow that doesn't feel like spam

■ Premium

• Canvas pages expanded from 5 to 30

• Access to the full Premium Theme Pack

• More space for diaries and notes

■ Recommended for

• Students who need a study timer or focus timer

• Learners preparing for the CSAT, civil service exams, certifications, or online lectures

• Those who break down study time using the Pomodoro technique

• Those who want to measure pure study time with a stopwatch

• Those who want to record their daily study content in a diary or planner

• Those who take notes or draw on tablets such as iPads or Galaxy Tabs

• Those who prefer study apps with minimal, aesthetic, or dark themes

■ Backup & Device Transfer

• Back up your diaries, timers, and canvas via ZIP anytime

• Easy restoration when changing devices

■ Inquiries

Email: [e-mail]

You can send a direct message from "Help · Inquiry" within the app.

■ Premium

• Expand Canvas pages from 5 to 30

• Access the full Premium Theme Pack

• More space for diaries, timers, and canvases

• Easy restoration when changing devices Study Timer · Focus Timer · Hourglass Timer · Pomodoro · Stopwatch · Study Time Measurement · Study Diary · Study Journal · Study Planner · CSAT Study · Civil Service Study · Certification Study · Online Lecture Study · Canvas Handwriting · Dark Theme · Home Screen Widget · Lock Screen Widget

What’s new

새 무료 테마 추가 — "112 출동" (공무원 카테고리, 차콜 + 경찰 청색)
• 카카오톡·메시지·이메일로 받은 공유 다이어리 링크(sanddiary.com/p/…)를 누르면 브라우저를 거치지 않고 앱에서 바로 열립니다
• 공유 글이 삭제됐거나 링크가 만료된 경우에도 깔끔한 안내 메시지로 처리
• 작은 버그 픽스와 내부 안정성 다듬기