Glucose Diary - Daily Tracker
Daily blood sugar tracker
Free · Designed for iPad. Not verified for macOS.
Auto-classify readings by meal context. Trend chart with target-range guides. Estimated A1C after 14+ days. 100% on-device — no account, no cloud.
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)
• Fixed the app closing when you tapped Share on iPad.
• The bottom banner now sizes itself to your screen and fades in instead of making the layout jump.
The developer, SiU Ahn, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- SiU Ahn
- Size
- 33.5 MB
- Category
- Medical
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Korean
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Advertising
Health or Wellness Topics
- Copyright
- © 2026 SiU Ahn