Offline-first diary for iOS and Android

Glytrio Blood Sugar Log

A private blood sugar log app for recording glucose, food, carbs, insulin, medication, activity and wellbeing, then turning everyday records into a clear doctor report.

Built for quick daily logging on iPhone: no required account, no ads and no default cloud. Glytrio is a diary, not a bolus calculator or medical device.

Download on App Store
App Store availableOffline-firstGoogle Play - soon
iPhone App Store now
90 days doctor report mode
PDF/CSV accountless export
local SQLite on device

Private daily logging

A diabetes diary that starts with records, not accounts

Glytrio keeps the daily workflow focused on the facts you want to remember: glucose readings, food, carbs, insulin, medication, activity, wellbeing and notes. Records stay local by default, and exports are created only when you choose to share them.

The app is for personal record keeping and doctor conversations. It does not calculate insulin doses, diagnose conditions or replace medical advice.

Screenshots

Real app screens

Screenshots come from the fastlane and verification builds. The site is describing the app that exists in code, not a separate landing mockup.

Glytrio diary screen in English
Daily diary Glucose, food, insulin, activity and notes in one timeline.
Glytrio glucose entry screen with meal link section
Fast glucose entry Large keypad, measurement context and optional meal linking.
Glytrio food list screen
Food and XE Products, carbs per 100 g, GI, favorites, recent and custom foods.
Glytrio analytics and doctor report screen
Analytics and report Day, week, month, 90 days, range buckets and PDF/CSV.
Glytrio reminders screen
Reminders Local reminders for glucose, medication and explicit follow-ups.
Glytrio backup screen
Backup Manual export/import with optional encryption.

Feature set

What is already in the product

This list is based on the PRD, feature wiki and Flutter code: Diary/Food/Analytics/Reminders/Profile tabs, Drift storage, reports and backup.

Daily log

A factual diary, not a medical adviser

The daily timeline supports glucose, insulin, food, medication, activity, wellbeing, weight, ketones, hypo events and notes.

  • daily summary
  • glucose range bar
  • soft delete with undo

Food/XE

Food, carbs and bread units

The food tab helps keep meal context near glucose readings: carbs per 100 g, GI, favorites, recent items, custom products and saved meal templates.

  • product search
  • custom foods
  • saved meals

Analytics

Trends without clinical judgement

Analytics covers day, week, month and 90 days: average glucose, min/max/count, SD/CV, hypo/hyper levels and after-meal observations.

  • below/in/above range
  • 90-day doctor mode
  • meal-to-glucose links

Reports

PDF/CSV for appointments

Reports combine diary entries, glucose, food, insulin, clinical facts, glucose charts and a 90-day preset for a doctor visit.

  • PDF chart
  • CSV export
  • no web portal required

Offline

Local on the device

The MVP does not require a backend. Data stays in SQLite/Drift, backup is user-initiated and encrypted exports verify integrity.

  • no account
  • optional AES-GCM
  • integrity check

Profile

Profile and clinical facts

Profile stores language, units, target range, XE settings, therapy type, HbA1c, blood pressure, lipids, kidney labs and annual exams.

  • app lock
  • personalization
  • doctor-report facts

Jobs to be done

JTBD: when Glytrio helps

These scenarios start with the user task, not with a menu of screens.

01

When a reading needs to be logged in seconds

Open, enter glucose, save

Fast entry uses a large keypad, contexts such as fasting / after meal / bedtime and the user’s preferred units.
02

When food and glucose need context

Link a meal to a later glucose reading

Glytrio stores meal-to-glucose links and later shows neutral observations without causal or treatment advice.
03

When a doctor appointment is coming

Build a 7, 30 or 90 day report

PDF/CSV exports glucose, food, insulin, reminders, weight and clinical facts in a format that is easy to bring to a visit.
04

When a parent keeps the diary

See the child’s day without account friction

One local profile on the device, quick records and a readable daily history without mandatory registration.
05

When labs and related facts matter

Keep HbA1c, BP, lipids and kidney labs near the diary

Low-frequency clinical facts live in Profile and flow into the doctor report as records, without color judgement or diagnosis.

Medical boundary

Glytrio is a diary, not a doctor

The app helps people record and review history. It does not replace a clinician, diagnose conditions or manage therapy.

  • does not calculate or recommend insulin doses
  • does not tell the user how much insulin to inject
  • does not control pumps and is not CGM
  • does not diagnose or predict medical outcomes

Guides

English search guides

Short intent pages for the highest-priority US and tier-1 searches around glucose logs, carb tracking, doctor reports and offline diabetes diaries.

Blood sugar log app How Glytrio works as a private iPhone log for glucose readings, meals and doctor reports. Glucose log What to keep in a glucose log and how offline records help before appointments. Carb counting app Use Glytrio as a carb diary companion without bolus advice or dose recommendations. Blood glucose tracker app Manual glucose tracking for iPhone users who need records, not CGM device claims. Doctor report Turn daily diary records into PDF/CSV summaries for appointments. Offline diabetes diary Keep diabetes records local by default with no required account. Blood sugar and blood pressure log Use a combined blank paper or spreadsheet log for manual glucose and blood pressure records. Diabetes food diary Keep food, carbs and glucose context together without nutrition or insulin advice. Glucose tracker app Manual glucose tracking for iPhone with privacy-first storage and reports. A1C tracker Record HbA1c lab results as clinical facts for doctor-report context.