zerospike: Blood Sugar Diary

Log a blood sugar reading in seconds and keep glucose, meals, insulin and medication in one private diary. No account, no cloud; every record stays on your phone. For anyone living with type 1, type 2 or gestational diabetes, keeping an eye on prediabetes, or tracking without a diagnosis. If you have ever written a number on the back of a receipt, this is the notebook you meant to keep. AN ENTRY IN SECONDS - Glucose in mg/dL or mmol/L, tagged fasting, pre-meal, post-meal (2h) or bedtime. Open, type, done. - The insulin you took: your own basal and bolus products; premixed gets its own row. The app never calculates or suggests a dose. - Pills in one tap, and a daily reminder if you like. - 1000+ foods with carb counts: scan the barcode, pick a favorite, or add your own and give it an emoji. - Tap "I started eating" and a 120-minute countdown sits on the dashboard. Started late? It counts what is left. REVIEW YOUR HISTORY - A color-coded journal with a daily chart. Edit an entry or swipe to delete; undo waits 5 seconds. - Insights (Pro): the share of readings inside your target range (time in range), a typical day built from every reading in the period (AGP), an estimate of A1C from your average (GMI), 30 and 90-day trends, a weekly digest. - Meal response (Pro): the 3-hour curve after a meal, alongside earlier logs of the same food. - A doctor-ready PDF for any date range, made on the phone, Insights included. INJECTION SITE ROTATION - A body map of your logged injections, mirrored so your left is on the left. It marks the spot that has waited the longest, with a short note on how quickly each region typically absorbs. TRACKING WITHOUT A DIAGNOSIS - Choose "No diagnosis" at setup and the insulin screens stay hidden. You keep a plain journal of glucose and meals. - Reference pages from the ADA and CDC are linked inside the app. The app scores nothing; that conversation belongs with your doctor. STAY ON SCHEDULE - Up to 10 reminders in one place: glucose, medication, basal, or any you write yourself. Medication can repeat through the day. Pick a ready-made set at setup and see the next 24 hours on one screen. - On iOS 26, a reminder you set can ring as a real alarm, audible on silent; one tap turns it back into a notification. - The post-meal timer can ring the same way when it ends, and runs as a Live Activity until then. - Home and lock screen widgets: last reading, log glucose, a meal or insulin, start the timer. Two Control Center controls on iOS 18. - Apple Watch: your last reading, colored by your own target band, and a countdown to your next reminder, on your wrist and as a watch face complication. MORE - Profiles for yourself and the people you care for; each keeps its own log and reminders. - Apple Health (Pro) reads glucose into the journal, marked "Health". Write-back of hand-entered readings is off until you turn it on in Settings. - 9 languages, with full right-to-left layout for Arabic. Download zerospike, make your first entry in seconds, and walk into your next appointment with a clear log. zerospike is a personal tracking logbook. It is not medical advice and not a medical device. Always decide treatment with your healthcare team. Pro plans: monthly, yearly (7-day free trial) or a one-time lifetime purchase. Privacy Policy: https://greeneyeapp.com/en/legal/zerospike-privacy Terms of Use (EULA): https://greeneyeapp.com/en/legal/zerospike-terms