Bolo: Type 1 Diabetes Diary
Glucose, carbs and insulin
Free · Designed for iPhone. Not verified for macOS.
Bolo is the type 1 diabetes diary you'll want to open every day. Glucose, meals, insulin, medications and appointments in one clear, cheerful place, on your iPhone and Apple Watch.
LIVE GLUCOSE
• Readings from your Dexcom account every 5 minutes (Dexcom Share, like the Follow app), from Apple Health or entered by hand.
• Low, high and no-data alarms, even with the app closed if you turn on always-on alerts.
• Widgets, a Live Activity on the Lock Screen and Apple Watch complications.
• The Ribbon: the chart that stays straight while you're in range and shows at a glance when you go up or down, with meals and boluses in place.
MEAL DIARY
• Carbs and sugars in a few taps: barcode, label reading and dishes you build, like flatbreads, pizza and sandwiches.
• Type "flatbread with sausage and peppers" and Bolo builds the dish with the grams.
• Hypo sugars logged with one tap.
EATING OUT AND FAST FOOD
• McDonald's Italy products and meals with the values the chain publishes: pick burger, size, side and drink and Bolo adds up the carbs.
• Pub, steakhouse, Tex-Mex and Chinese restaurant dishes: wings, nachos, onion rings, burritos, spring rolls and many more.
INSULIN AND MEDICATIONS
• Boluses and basal logged in a moment, with a basal reminder.
• Informational warnings about medicines that may raise or lower your glucose, with sources. They invite you to keep an eye on your readings and talk to your diabetes team.
CHARTS AND REPORTS
• Time in range, average, variability and estimated HbA1c from today to 90 days.
• Daily and weekly summaries and a PDF to bring to your appointment.
MEDICAL RECORD AND SENSOR
• Visits, reports read from a photo, HbA1c over the years, documents.
• Sensor days left, wear sites and reminders before it expires.
RECIPES AND SHOPPING
• Over 300 recipes with carbs per serving, a week plan and a shopping list you can send to the Manca! app.
YOUR DATA STAYS YOURS
• Your diary stays on your iPhone. No account, no ads, no data sold.
• Encrypted backup with a password only you know.
IMPORTANT
Bolo is not a medical device. It logs, shows and warns, but it does not calculate or suggest insulin doses and does not tell you how to correct your glucose. It does not replace your sensor's alarms or your doctor's advice. Dexcom is a trademark of Dexcom, Inc.; Bolo is not affiliated with or endorsed by Dexcom.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
What's new in 1.0.2
• iPhone Duo: when it's open, Bolo uses the whole screen. Tabs move to a side bar and every page splits in two along the fold: Today shows your glucose on the left and the ribbon always visible on the right; Diary shows your day and its chart; Charts shows the numbers and the graphs; Recipes shows the cookbook and the open recipe; You shows the list and the chosen page. Closed, it's the Bolo you know.
• Fix: a product with no nutrition values (for example from Open Food Facts) could make the app close every time it opened. Now it opens, and all your data stays where it was.
The developer, Samuel Ravani, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Identifiers
- Other Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- User Content
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Samuel Ravani
- Size
- 93.7 MB
- Category
- Medical
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later. - Apple Watch
Requires watchOS 26.0 or later.
- iPhone
- Languages
- English and Italian
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- Copyright
- © 2026 PurpleHeads