T1D1 Mobile
T1D1 Health & Fitness iPhoneiPadiPod touch
T1D1 Mobile is a free Health & Fitness app for iPhone and iPad by T1D1. Rated 4.6/5 from 101 ratings. Requires iOS 15.6. Updated October 4, 2026.
- Rating
- 4.6
- 101 ratings
- Price
- Free
- on the App Store
- Size
- 39 MB
- Age 12+
- Updated
- Oct 4
- 2026 · v20.2
Screenshots
About T1D1 Mobile
T1D1 (Type 1 Diabetes from Day 1), all the essentials you need to get started from day 1 of diagnosis. 100% free - No subscription and no in-app purchases! Who is it for? People with Type 1 Diabetes who… -Need help calculating insulin! -Are newly diagnosed with Type 1 Diabetes -Use multiple daily injections (MDI) of short-acting insulin -Work with School nurses -Have caregivers who assist in diabetes management -Want to send their data to healthcare providers -Are taking a break from using a pump -Count carbs but are NOT on a sliding scale T1D1 implements the bolus dosing calculation as indicated by the American Diabetes Association standards of Care (https://diabetesjournals.org/care/issue/48/Supplement_1) without modifications. T1D1 is intended for people with Type 1 Diabetes aged 2 years and older who use multiple daily injections (MDI) of rapid-acting insulin. The user can calculate insulin doses based on user-entered data, track glucose, insulin, and carb intake, and share information with their healthcare team. Designed to be simple and accessible, T1D1 makes it easier for patients and families to manage the daily math of diabetes. About the creator: My name is Drew Mendelow. I was 13 years old when I was diagnosed with Type 1 Diabetes in 2020. I remember feeling so overwhelmed when I was newly diagnosed and wanted to create an app with just the essentials you need from day 1 of diagnosis. My aim is to make it simple, reliable, and accessible to all… for free! Hope this app makes your life just a little easier. Disclaimer: T1D1 is an FDA-cleared, Class II medical device for over-the-counter use. Before use, a healthcare professional must provide your target blood glucose values, insulin-to-carbohydrate ratios, and correction factor (aka insulin sensitivity factor) to be programmed into the app. While the app is designed to support insulin dosing for individuals with Type 1 Diabetes Mellitus (T1DM) from age 2 and older, for children under 13, a parent or legal guardian must create and manage the account on the child’s behalf. Legal Manufacturer: Comerge AG Bubenbergestrasse 1 Zurich, 8045 Switzerland
Ratings & reviews
4.6
101 ratings
What’s new
Version 20.2 · Updated October 4, 2026
This is a big one... Highly anticipated Spanish language capability is here! This release also adds an optional Afrezza® inhaled insulin dose display, converted from the existing mealtime insulin calculation. Both features can be turned on or off in Settings.
App privacy
The developer, T1D1, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Contact Info: Email Address, Name
- Health & Fitness: Health
- User Content: Other User Content
- Identifiers: User ID, Device ID
Used for: App Functionality, Other Purposes
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction
- Diagnostics: Crash Data, Performance Data
Used for: Analytics
Alternatives to T1D1 Mobile
Looking for apps like T1D1 Mobile? Here are 6 similar apps on the App Store. The highest rated is Level One: A Diabetes Game (4.9/5), and all 6 are free to download.
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Bolus Guide
3.8
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Level One: A Diabetes Game
4.9
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GlucoSense: Diabetes Health
4.8
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MiniMed Go
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InPen Smart Pen
3.9
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Undermyfork: Diabetes App
4.6
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| T1D1 Mobile | 4.6 / 5 (101 ratings) | Free | October 4, 2026 | |
| Bolus Guide | 3.8 / 5 (12) | Free | Mar 3, 2026 | Compare |
| Level One: A Diabetes Game | 4.9 / 5 (303) | Free | Feb 19, 2026 | Compare |
| GlucoSense: Diabetes Health | 4.8 / 5 (104) | Free | Aug 5, 2026 | Compare |
| MiniMed Go | 4.0 / 5 (66) | Free | Sep 2, 2026 | Compare |
| InPen Smart Pen | 3.9 / 5 (193) | Free | Jul 7, 2025 | Compare |
| Undermyfork: Diabetes App | 4.6 / 5 (130) | Free | Oct 11, 2026 | Compare |
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