Log your blood sugar in seconds.
Type the number from your meter, tag the moment and tap Save. Dropvel keeps glucose, insulin units and carbs in one simple diabetes log, shows your day against your own target range, and turns it into a PDF report for your next appointment.
Get it on Google PlayNo sign-in · works offline · entries stay on your phone
One line per reading
Glucose on a big keypad in mg/dL or mmol/L, plus a tag: fasting, before meal, after meal, bedtime or other. Glucose only is fine — insulin, carbs and a note are optional.
Insulin and carbs in the same entry
Rapid and long-acting insulin units in 0.5 steps with your own pen names, and carbs in grams with a meal tag.
Today's line against your range
Every reading of the day on a 24-hour chart with your target band, your last glucose shown big, and today's percentage in range.
Trends over 7 to 90 days
Average glucose, time below / in / above target, fasting and before/after meal averages, readings by hour and daily insulin totals.
A1c estimate as a reference
An estimated A1c calculated from your logged readings with the ADAG formula. It is a reference number, not a replacement for a lab test.
A PDF report for your doctor
Averages, time in target, the A1c estimate and every entry in a table — one tap, then share by email, chat or print.
No account, no server
Entries are saved on this device. Back them up yourself with CSV export and import.
Widget and gentle reminders
Home screen widget with your last glucose, today in range and a one-tap + Glucose button. Morning and evening reminders, off whenever you like.
FAQ
- Do I need an account to use Dropvel?
- No. There is no sign-in and no server, so there is nothing to log in to and no server error to wait out. Everything works offline except ads.
- Can I make a printable report for my doctor?
- Yes, and it is free. Pick a period and Dropvel builds a PDF with your averages, fasting and before/after meal averages, time in target, the A1c estimate and every entry. Share it or print it.
- How does Dropvel estimate A1c?
- It uses the average of the glucose readings you logged in the period and the ADAG formula (A1c = (average mg/dL + 46.7) ÷ 28.7). Finger-stick readings are snapshots, so treat it as a reference number; your lab A1c is the real value.
- Does it work with mg/dL and mmol/L?
- Yes. Choose your unit when you start and change it any time in Settings. Your target range follows the unit.
- Does it connect to my meter, Libre or Dexcom?
- No. Dropvel is a manual logbook: you type the number from your meter. It does not connect to meters, CGMs or Bluetooth devices.
- Does Dropvel calculate insulin doses?
- No. You can record the units you took, but Dropvel never suggests or calculates a dose. Your doses come from your care team.
- Will I lose my entries if I change phones?
- Export a CSV file from Settings and import it on the new phone. Entries are stored only on your device, so keep a backup.
- Can I use it for gestational diabetes?
- Yes. Set the fasting / before meal and after meal targets your care team gave you, and log fasting and after-meal readings as usual.
Guides
Dropvel is a logbook, not a medical device. It does not diagnose, treat or recommend insulin doses. Always follow your care team's advice. Dropvel is free and supported by ads.