Carbs in → Suggested
insulin out.
GlucoGuide helps you estimate insulin based on your carbs and blood glucose — quickly and without ads. Built to be simple for everyday use.
Enter carbs & BG, see an estimate.
USDA foods optional with a free key.
No ads; your data stays on your device.
How it works
Enter your insulin-to-carb ratio (ICR), correction factor (ISF), target BG, and units (mg/dL or mmol/L).
Type carbs directly or pick a food; optionally use USDA search with a free API key.
See food dose, correction dose, and a total that can consider insulin-on-board.
Why it’s free
No ads. No trackers. If it helps you, you can support development with a small one-time donation. Reviews help others find it.
No. This is an educational tool. Always confirm with your healthcare team.
You can try the app on this site for free. Accounts will let you save preferences and access future apps.
© GlucoGuideApp.com — Educational use only. Not a medical device.