BloodSugar: Diabetes Tracker

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Everyone
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Everyone
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About this app

BloodSugar – your blood sugar and how your meals affect it

BloodSugar is a lightweight, clear diabetes diary for your blood sugar. Your readings before and after eating are what it is all about. For particular foods or meals you can record several readings and, over time, see how your body responds to that specific food. HbA1c, blood pressure and weight are covered too. Ideal for people with diabetes who want to track and understand their own numbers. No sign-up, no account, no cloud – all your data stays encrypted on your device.

FEATURES

Record readings
• Capture a before and an after value, each with its own time
• The increase is calculated automatically
• Add a note to any reading
• Edit readings later whenever you need to

Foods & categories – the heart of the app
• Create foods with a photo and a description
• Sort your foods into categories of your own
• Link every reading to the food it belongs to – a whole meal can be a single entry too
• The more readings a food has, the clearer the picture gets: average value, average increase, last increase, plus minimum and maximum
• Category detail view with two tabs: the foods assigned to it and the matching readings

Document examinations
• HbA1c, blood pressure (systolic/diastolic) and weight
• Track your values over time

Home dashboard
• Your latest reading at a glance
• Blood sugar history in 24-hour blocks, easy to page back and forth
• HbA1c history
• Quick access to the most frequent actions
• You decide which cards are shown

Search, filter, sort
• Full-text search across readings and foods
• Advanced search with a hierarchical filter by category and food
• Sort by newest or oldest entries

Units the way you're used to
• Blood sugar in mg/dl or mmol/l
• HbA1c in % or mmol/mol
• Weight in kg or lb
• Switching applies immediately to every value you have already recorded

Backup in a single file
• Foods, categories, examinations, readings and all photos in one backup file
• The file is encrypted with your password
• On restore, either merge with your existing data or replace it completely

Convenience
• Light and dark theme (dark mode)
• Clean Material Design interface
• A short tour on first start, available again at any time

PRIVACY & SECURITY

BloodSugar stores all data exclusively on your device. The database is encrypted on the device, and so are the photos of your foods. There is no registration and no ads. There is no automatic cloud backup either – you create the backup file yourself and keep it wherever you want. Your health data belongs to you.

PLEASE NOTE

BloodSugar helps you record, manage and keep an eye on your values. It is not a medical device and does not replace medical advice, diagnosis or treatment. It gives no therapy recommendations and does not calculate insulin doses. If you have questions about your health, please talk to your doctor.
Diabetes diary for blood sugar & how food affects it – encrypted, no account
Updated on
Aug 30, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection