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T1D1 icon

T1D1


T1D1
20.1.0
  • Mar 24, 2026
    Update date
  • 0/64
    Security
  • Everyone
  • Android 9.0+
    Android OS

About T1D1

FDA Cleared Insulin Calculator for Type 1 Diabetes

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

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Additional APP Information

Latest Version

20.1.0

Uploaded by

Alan Dhani Tarigan

Requires Android

Android 9.0+

Available on

Content Rating

Everyone

Security Report

What's New in the Latest Version 20.1.0

Last updated on Mar 24, 2026

Minor bug fixes and improvements. Install or update to the newest version to check it out!

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0/64
Scan Result: Secure
No security vendors flagged this file as malicious
No Virus
No Spyware
No Malware
No Virus
No Spyware
No Malware
Scan Date:Mar 13, 2026
Package Name:com.hotmail.mmendelow.t1d1
SHA-256:a012abc41515eed245a549573744711b3b5d7a157b89aac18e8e4b497c908adb
SHA-1:baa89e5d9e9dfc014afb10f50ce291aab253b332
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View Security Report

T1D1 Screenshots

T1D1 posterT1D1 screenshot 1T1D1 screenshot 2T1D1 screenshot 3T1D1 screenshot 4

Old Versions of T1D1

XAPK
39.1 MBMar 13, 2026
Download
XAPK
39.9 MBOct 22, 2025
Download
APK
43.1 MBJan 30, 2021
Download
All Versions

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