Kettou Note - Blood Sugar Log

The fastest notebook for your daily blood sugar. Kettou Note is a simple glucose log for people managing type 2 diabetes or prediabetes. ■ Log in 3 seconds - Big number pad for glucose entry (20-600 mg/dL) - One tap on 6 timing tags (fasting, before meal, 1h after, 2h after, bedtime, anytime) - The likely tag is pre-selected by time of day; add medication and free-form notes - Unlimited entries, free forever ■ Fix past entries in 2 taps - Forgot to enter a reading? Tap the date row, then a chip like "1 hour ago" or "same time yesterday" - done - Also editable from swipe > "Edit date" in the list ■ Color-banded charts you can read at a glance - Last 14 days plotted over color bands (low / in range / borderline / high) referencing Japan Diabetes Society guide values - Stat cards: entry count, average, % in target - Colors are a visual guide, not a diagnosis ■ Doctor-ready export, completely free - CSV (date, glucose, timing, medication, note - opens straight in Excel) - PDF report with summary stats for clinic visits - Ranges: 14 days, 90 days, 1 year, or all. Export is never paywalled ■ Everything is free - 90-day and 1-year trends - Time-of-day x tag analysis, HbA1c reference estimate - Custom target range and band thresholds - CSV/PDF export ■ Remove Ads ($0.99 one-time, no auto-renewal) - Permanently hides the bottom banner on each tab - No feature limits if you don't buy ■ Privacy-first - All glucose data stays on your device and is never sent to the ad SDK - No account, no analytics SDK - No meter/device connection Disclaimer: This app is not a medical device and makes no diagnostic or treatment decisions. Color bands and the HbA1c estimate are visual references based on Japan Diabetes Society guide values. Always consult your doctor for treatment decisions.