Blood sugar diary in two taps. Meal spikes, A1C estimate, doctor logbook PDF.

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
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
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
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 you pay

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

Good to know

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.

Sugarline

Blood sugar diary in two taps. Meal spikes, A1C estimate, doctor logbook PDF.

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