The diabetes journal
that learns with you
Log meals, track corrections, and get personalized dose recommendations based on your own history. The longer you use it — the smarter it gets.
Not a medical device. A personal tool to help you spend more time in your target glucose range.
Why it matters
More time in range.
Better wellbeing. Better life.
Every percentage point of Time in Range matters for long-term health and daily wellbeing. Dia-Log helps you get there: your insulin needs aren't constant, so it automatically calculates your carb ratio from your meal history — and uses it to give you an accurate dose recommendation every time.
Three jobs — one tool
Log meals, track corrections,
and let your history guide your dose
Your insulin needs aren't constant — they shift with stress, sleep, and activity. Dia-Log learns from your real data and keeps your recommendations accurate.
Log meals
Enter carbs and current glucose — get a dose hint based on how your body actually responded to similar meals before. No tables to memorize.
Track corrections
When glucose goes sideways after a meal — log the correction with context. Future-you will understand exactly what happened and why.
Recommendations that adapt
Your insulin needs change — stress, sleep, and activity all affect how you respond to carbs. Dia-Log automatically recalculates your carb ratio from your real meal history, so the dose hint is always based on how you actually respond.
Live demo
Try the calculator — this is exactly how it works in the app
The ratio and history shown are sample data. Everything else works exactly as in the app.
New Meal
Day Period — auto-detected
Carbs
Glucose opt.
/L
Insulin Dose — enter manually or calculate
Optional details
Notes
What you get
A journal that gets smarter over time
Seconds, not minutes
Enter carbs and glucose — done. No food databases, no barcode scanning. You already know what you ate — just type the number.
Patterns without spreadsheets
The app surfaces recurring patterns: "After lunch on weekdays glucose spikes every time." See what causes it — without any spreadsheets.
Safe corrections
When correcting after a meal, Dia-Log accounts for insulin still working from your last shot — so you don't accidentally take too much.
Context that sticks
Quick tags — stress, exercise, alcohol, large portion — are two taps. A month later you know exactly why that Tuesday went sideways.
Sound familiar?
Whether you've lived with diabetes for a year or a decade — managing it takes energy every single day.
You want one thing: to manage diabetes confidently and easily enough that it stops limiting your life.
How Dia-Log works
Step by step
Log food and get a recommendation
Learn why glucose is going off
Correct and record the context
How your day changes
Before and after
2 minutes of mental arithmetic before every plate
Log → recommendation → eat. Lunch is about food again, not arithmetic.
"High again, no idea why" — the same frustration every morning
You see the pattern, change one thing, watch it improve.
Corrected but didn't log it. An hour later: "wait, did I already dose?"
Every correction recorded with context. You always know how much insulin is still working.
Diabetes as constant background anxiety
Diabetes as a 10-second routine that doesn't ruin your mood.
"But what if…" — answered
Where is my data stored?
Your data is saved in a "Dia-log" folder in your own Google Drive — not on our servers. We only access what's needed for sync.
What if I have no internet connection?
Dia-Log works fully offline. Data is stored on-device and syncs when you reconnect. On a hike, on a plane, abroad — it all works.
What if the recommendation is wrong?
You always see how the recommendation was calculated, and you always make the final call. Dia-Log is a smart journal with hints — not an autopilot.
I'll quit after a week like every other app
Dia-Log was built for people who are tired of logging. Minimum fields, maximum reuse. When an entry takes 10 seconds, the habit sticks.
I don't know my exact carb ratio
Start with a rough number — the app refines it from your real meal history. Or try without an account: guest mode requires no sign-up.
I already use a CGM or insulin pump
Those are powerful tools. Dia-Log complements them with meal context and pattern analysis that most CGM apps don't provide.
What you've probably already tried
And why you're still looking
Spreadsheets and notes
Manual entry every time, no recommendations, no pattern detection. A month later — a wall of numbers nobody looks at.
Dia-Log: Dia-Log logs the same data but gives recommendations, surfaces patterns, and automatically accounts for active insulin.
Other diary apps
Too many fields, slow to log, generic advice that ignores your history. Data sent to third-party servers.
Dia-Log: Minimal input, recommendations that get more accurate the more you log. Your data — only in your Google Drive.
Works everywhere
As an app or in your browser
Dia-Log is a Progressive Web App. Install it to your home screen for a native-like experience, or just open it in any browser — your choice.
Install as an app
Or use in any browser
Fully offline
More time in range.
Less worry.
Free. Offline. Your data in Google Drive.