샌드다이어리 : 공부 타이머·집중 다이어리·일기·스케쥴

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About this app

Diary, study timer, canvas note-taking, and widgets all in one hourglass.

SandDiary is a diary app that allows you to slowly accumulate handwritten entries, picture diaries, one-line entries, and emotional entries, much like an hourglass.

From one-line entries asking "What did I do today?" to picture diaries where you sketch with your hand, and even photo diaries where you simply tap a picture—it captures every nuance of a diary in a single volume.

Adding an hourglass timer to visually manage study time, a handwriting canvas, and home and lock screen widgets, you can complete your daily record-keeping and focus all within one app. ■ A Diary as a Journal

• Handwriting Diary · Drawing Diary · Photo Diary · One-line Diary · Emotional Diary — All in One App

• Diary Customization: Stickers, Canvas Handwriting, Pen Colors, Mood Themes

• Five Basic Diary Templates

(Daily Review · Study Log · Emotion Record · Goal Check · Free Format)

• Create and Save Up to 50 Custom Diary Templates

• Rich Editor for Text Thickness · Titles · Quotes · Checklist Formatting

• It’s Okay Not to Write Every Day

Even if you open it again after a few days, yesterday's pages are waiting right there

■ Canvas Writing · Drawing · Drawing Diary

• Pen · Highlighter · Eraser + Rich Color Palette

• Custom Pen Colors: Register Your Own Colors

• Handwriting Sensation with Nearly Lag Thanks to the New Input Pipeline for 2026

• Optimized for Idea Sketches, Math Solving, Handwritten Notes, and Drawing Diaries

• Works Naturally on Tablets Like iPad and Galaxy Tab

■ Hourglass Timer to Visualize Study Time

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

• Structure ideal for breaking down time for focused study, similar to a Pomodoro

• Study timer that remains accurate even in the background

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

• Automatically records study sessions · Daily study time summary — seamlessly connected to your diary

■ Home · Lock Screen Widgets

• Monthly calendar + Schedules, To-Dos, and Diary for selected dates

• Expand between Week ↔ Month, toggle To-Dos directly from the widget

• Widget themes synchronize with the app theme in real-time

■ Sentimental Themes That Change the Mood

• Color + Mood (Bloom / Grain / Fog) + Typography + Motion

Complete themes that change all at once

• 3 basic themes (Purple · Gold · Mint)

• New diary and study environments every day with Premium Theme Packs

• Free themes for specific professions such as Civil Servants, Firefighters, and Police Officers

■ Quiet Notifications

• 6 campaigns including diary writing reminders, starting study, encouraging a return to work, and recommending breaks

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

• Short and quiet. A flow that doesn't feel like spam

■ Premium

• 5 Canvas Pages → BASIC 15 Pages → PREMIUM 50 Pages

• Access to the full Premium Theme Pack

• More space for diaries and notes

■ Recommended for

• Those who want to consistently write handwritten diaries, illustrated diaries, or one-line diaries

• Those who want to organize their day with an emotion diary or mindfulness diary

• Those who want to keep a daily diary, study diary, and study planner in one app

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

• Those who want to break down study time using the Pomodoro technique or measure pure study time with a stopwatch

• Those who write notes, draw, or illustrated diaries on tablets such as iPads or Galaxy Tabs

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

■ Backup · Device Transfer · Data Protection

• Diary content is backed up only to your Google Drive — no copies are kept on servers

• Export your entire diary, timer, or canvas as a ZIP file anytime

• Easy restoration when changing devices

■ Inquiries
Email: [e-mail]

You can send it directly from "Help · Contact" in the app.

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Handwriting Diary · Picture Diary · Photo Diary · One-line Diary · Emotion Diary · Secret Diary ·

Diary Decoration · Diary Templates · Daily Diary · Study Diary ·

Study Diary · Study Planner · Study Timer · Focus Timer · Hourglass Timer ·

Pomodoro · Stopwatch · Study Time Measurement · CSAT Study · Civil Service Study ·

Certification Study · Online Lecture Study · Canvas Notes · Handwritten Notes · Drawing ·

Dark Theme · Sentimental Diary · Mindfulness · Home Screen Widget · Lock Screen Widget