Glucose Diary - Daily Tracker

One reading at a time — Glucose Diary is the simplest, most accurate way to track blood glucose for diabetes management and prevention.

Record readings with their meal context

Fasting · Pre-meal · 2h post-meal · Bedtime · Random — thresholds for "normal" differ by context, so each entry is auto-classified by when it was taken.

Trend at a glance

A smooth line chart visualizes your glucose over time, with target-range guides (70-180 mg/dL) that make trends easy to read.

Estimated A1C (after 14+ days)

Based on the ADA average-glucose-to-A1C conversion. A useful self-monitoring proxy between lab visits.

Choose your classification standard

Korean Diabetes Association (KDA) or American Diabetes Association (ADA) — match whichever your doctor uses. Your raw data is unchanged when you switch standards; only the labels are recomputed.

Categories (auto-applied per meal context)

• Severe low (under 54 mg/dL)

• Low (54-69)

• Normal — context-specific threshold

• Pre-diabetic (IFG / IGT)

• Diabetic

• Severe high (300 or higher)

Activity, feeling, and medication tags

After exercise · After alcohol · Traveling · Tired · Stressed · Sick · After insulin — common contexts are one tap; create your own tags as needed.

Calendar view

Month calendar with category-colored dots — see at a glance which days you logged and how each reading fell.

Reminders

Up to 3 daily measurement reminders at the times and weekdays you choose. Scheduled locally on the device — no internet required.

Export and backup

CSV export to share with your doctor; full JSON backup and restore for moving between phones.

100% on-device — no internet, no account

Every reading is stored in a local SQLite database. Nothing leaves the device. No sign-up required. Your health data stays yours.

Korean and English

Auto-detects from system locale, or pick manually in Settings. Dark mode supported.

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Note — This app is a self-monitoring diary, not a medical device. The displayed categories and estimated values are reference indicators only and do not replace medical judgment. Discuss any diagnostic or treatment decisions with your physician.

Classification sources:

• Korean Diabetes Association (KDA, 2023): https://www.diabetes.or.kr

• American Diabetes Association — Standards of Care in Diabetes (2026)