Sugarline: Blood Sugar Log

Two taps per reading. No account. A logbook your doctor can actually read.

LOG FAST
• The keypad opens right away: type the number, tap save. Fasting, before or after a meal and bedtime are picked for you from the time and your last meal
• Meals with carbs and a photo, medication and insulin doses, blood pressure, weight, A1C, ketones, exercise and notes
• Readings from your CGM or meter app come in through your phone's health app — no passwords for other accounts
• mg/dL or mmol/L, target ranges for everyday, tighter control, pregnancy or no diabetes, or your own

SEE WHAT MOVES IT
• Today: your last value large, with a range band and arrow, and today's line on one chart
• Time in range, lows, averages and variability for the last 14 days
• After-meal check: a reminder to measure after you eat, and a ranking of which meals raise you least
• Typical day (AGP), time-of-day highs and lows, 30-day comparison and a 90-day trend with GMI

FOR YOUR APPOINTMENT
• A printable logbook PDF — summary, time-in-range bar, daily grid of every reading, medications and notes. Free, for any period
• CSV export and a backup file you can open on your next phone

PRIVATE BY DEFAULT
• Records stay on your phone and in your own backup, never on servers of ours. No ads, no sign-up
• Optional app lock, home-screen and lock-screen widgets, light or dark, 10 languages

HOW PAYING WORKS
• Every feature is open for your first 30 days
• Logging, reminders, health sync, the doctor PDF, export and 14-day stats stay free after that
• The deeper analysis unlocks with a single purchase — never a subscription

Sugarline is a personal record. It does not calculate insulin doses or replace alarms from your CGM. Talk to your care team about your numbers.