Blood Sugar Diary for Diabetes

Review by eFreeware

The most distinctive thing about Blood Sugar Diary for Diabetes is how wide the logbook goes. It is not just a place to write down a reading; the developer has built it around glucose, hemoglobin, weight, medication, insulin doses, carb intake, mood and free-text notes, with tags like Before Meals and Evening to sort each entry. Cards, the developer behind it, keeps the download free and the app sits in the Medical category with more than five million installs and a 4.6 average from over 25,000 ratings.

That combination points to a specific audience. If you live with type 1, type 2 or gestational diabetes and you want one place where the numbers you already collect end up together, this is the kind of tool that makes sense. It is also pitched at people who want to understand their own patterns rather than simply store values, since the app includes educational material on the condition alongside the logging side.

What I like about the framing is that it stays honest about its role. The developer states plainly that the app is for tracking and information, not for measuring blood glucose, and is not a substitute for medical advice. That matters for a health app, and it sets the right expectation before you install it.

What you actually record, and how

The core of the app is a diary. Glucose readings, hemoglobin values, weight and medication use can each be entered with a single touch, according to the developer, and the same entry can carry insulin doses, carbohydrate intake measured in XE, a mood assessment and a personal note. For anyone who has kept a paper log, the appeal is obvious: the context that usually gets lost, like what you ate or how you felt, stays attached to the number.

Tags do the sorting work. Entries can be marked Before Meals, After Meals, Morning or Evening, which is the difference between a pile of readings and something you can actually compare. If you have ever tried to work out why a morning number looks different from an evening one, that kind of labeling is what makes the comparison possible.

Units are handled without fuss. You can set the app to mg/dL or mmol/L, and the developer includes an explanation of what each unit means, since millimoles per liter and milligrams per deciliter are the two conventions you will meet in different countries and clinics. Switching between them matters if you move, travel, or read guidance written for a different measurement standard than the one your meter uses.

Turning entries into patterns

More than seven charts are built in, and the developer describes them as a way to see correlations between blood glucose, hemoglobin, well-being and the other values you log. That is where a diary earns its keep. A single reading tells you very little; a month of readings tagged by meal and time of day starts to show shape and rhythm.

The developer also makes the case that consistent logging gives your healthcare professional better material for adjusting treatment. I think that is the right way to think about it. You are not diagnosing yourself from a chart; you are arriving at an appointment with a record instead of a memory.

Export is included and is more flexible than I expected for a free app. Spreadsheet export in particular is useful if your clinician prefers to work with their own tools, or if you want to keep a separate long-term archive of your own.

The learning material inside the app

Alongside the logbook there is a body of explanatory content. It covers what blood glucose and diabetes are, the difference between type 1 and type 2, the symptoms associated with each, and what happens when levels run low or high. Prediabetes and gestational diabetes are covered as well, along with benchmarks for normal blood glucose levels.

For someone newly diagnosed, or for a family member trying to understand what a diagnosis means, that material is a reasonable starting point. It is written to explain concepts rather than to replace a conversation with a clinician, and the app's own disclaimers make that boundary clear.

I would treat this section as orientation, not instruction. Knowing the difference between the two main types of diabetes or recognizing the signs of a low is genuinely useful background, but the dosing, targets and treatment decisions belong with your care team.

What to expect when you first open it

The app is free to download and offers in-app purchases, and it carries advertising.

Setup means choosing your unit and beginning to log. The emphasis throughout is on quick entry rather than a lengthy onboarding process. The recent update note is simply a prompt to look at new features, without naming them.

Since it was released in May 2020 and last updated in August 2026, the app has clearly been kept current over a long stretch. For a tool you may end up using daily for years, that continuity is a point in its favor.

Who gets the most from it

This app fits people who already have readings to record and want them organized. If you check your glucose at set points in the day, take insulin, count carbohydrates, or track weight and medication alongside your levels, the entry fields map onto what you are already doing. The tags and the unit switch make it workable whether your clinic uses mg/dL or mmol/L.

It also suits anyone preparing for appointments who wants to hand over something more structured than a notebook. The export options mean the record can leave the app in a form your clinician can read, which is often the point of keeping it in the first place.

The educational side gives it a second audience: people recently diagnosed, or relatives trying to get their bearings. They can read the explanations and start a simple log without committing to anything complicated. What the app is built for is tracking and understanding, and it stays within that.

The case for installing it

Blood Sugar Diary for Diabetes does one job broadly: it keeps a detailed, sortable record of the numbers and circumstances around your diabetes, then helps you look at them and share them. The free download, the breadth of entry fields, the charting and the export formats make a strong case for trying it, and the install and rating figures suggest plenty of people have stuck with it.

The trade-offs are straightforward. There are ads and in-app purchases, and the app is a companion for tracking rather than a measuring device, as the developer makes clear. It will not read your glucose for you, and it is not a substitute for the advice of a healthcare professional.

If you want a place to keep glucose, insulin, carbs, mood and weight together, with tags that make the entries comparable and charts that show how they relate, this is a well-established option worth installing. It suits people who already have a meter and want a place to record and review their readings.

What's new in version 1.3.0

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