About T1D1
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 calcula
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 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
Previous Versions
Here you can find the changelog of T1D1 since it was posted on our website on 2022-04-05 23:16:24.
The latest version is 20.1.1 and it was updated on 2026-06-18 02:30:23. See below the changes in each version.
T1D1 version 20.1.1
Updated At: 2026-03-24
Changes: Added a resource page. Minor back-end updates
T1D1 version 20.1.0
Updated At: 2026-01-27
T1D1 version 20.0.0
Updated At: 2025-09-11
Changes: After 5 years of persistence, T1D1 is back up in the app store with FDA Clearance! It is the ONLY cleared over-the-counter insulin calculator and is classified as a Class II medical device. Features are enhanced but remain simple and free to all without any pop-up ads or in-app purchases.
T1D1 version 18
Updated At: 2021-01-07
Changes: Preparing our code for the next update in which we hope to introduce exciting features like advanced Glucose Targets and Correction Factors! As always, thank you to our amazing users! Keep the feedback coming!
Disclaimer
Official Google Play Link
We do not host T1D1 on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Google and passed their terms and conditions to be listed there. We recommend caution when installing it.
The Google Play link for T1D1 is provided to you by apps112.com without any warranties, representations or guarantees of any kind, so access it at your own risk.
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