# T1D1 Mobile — user reviews > 25 indexed App Store user reviews of T1D1 Mobile by T1D1 LLC, rated 4.46/5 from 24 ratings. - Source: https://appshunter.io/ios/app/t1d1-mobile/id6752346957/reviews - App overview in markdown: https://appshunter.io/ios/app/t1d1-mobile/id6752346957.md - Rating breakdown: 5★ 14 · 4★ 1 · 3★ 0 · 2★ 0 · 1★ 3 ## Newest reviews (12 of 25) ### 5/5 — Good thing *2026-04-26, version 20.1.1* Made my life way easier and I love using this app for everything tho lol thank you very much how are you doing? ### 5/5 — The BEST Diabetes App for Type 1 *2026-04-14, version 20.1.1* My son was diagnosed with Type 1 when he was 12yrs old. It was a life changing event for not just him but our family. His endo recommended this app to us to make the whole process a bit easier. The fact that the creator of the app also lives in MD made us curious. From Day 1 we were a fan. It keeps logs for us so that I can check to make sure my son is utilizing the app. As long as you know how to use the app, it is the best thing ever! As a parent, this is such a lifesaver for me and my family. 1000% recommend this! And thank you, T1D1! ### 5/5 — Great tool *2026-04-14, version 20.1.1* So easy to use and accurate ### 5/5 — Pump to Pens *2026-04-14, version 20.1.1* Sometimes I take a break from using my insulin pump - this application bridges the gap between using pens and administering correct/appropriate doses! It’s really too easy ### 5/5 — Great App and very useful *2026-01-30, version 20.1.0* As an adult who has been pumping for years, I worry about being hospitalized and not able to use my Omnipod. This app would be great for hospital staff or caregivers, that may not know how to calculate insulin for the individual. Be sure all numbers are correct especially correction factors. I hope it takes insulin onboard as people use it. Great idea. ### 5/5 — Must have for anyone on MDI *2025-11-30, version 20.0.2* Finally an app to help calculate insulin! As a parent, I can share this account with my family. And, best part is that I can easily send to our doctor so she can help us adjust our numbers as needed. Thank you for doing the legwork to get this app out there! ### 5/5 — So easy and useful *2025-11-30, version 20.0.2* Love this app. Takes all the guesswork out of calculating insulin. Highly recommend especially if you’re newly diagnosed. ### 5/5 — Best app ever *2025-11-30, version 20.0.2* I’ve had type 1 diabetes for 16 years. I use this app when I take a break from my pump. So much easier than doing my own calculations. Wish this was out when I was first diagnosed. It’s a lifesaver. I highly recommend it. ### 5/5 — The BEST Diabetes App for Type 1 *2025-11-18* My son was diagnosed with Type 1 when he was 12yrs old. It was a life changing event for not just him but our family. His endo recommended this app to us to make the whole process a bit easier. The fact that the creator of the app also lives in MD made us curious. From Day 1 we were a fan. It keeps logs for us so that I can check to make sure my son is utilizing the app. As long as you know how to use the app, it is the best thing ever! As a parent, this is such a lifesaver for me and my family. 1000% recommend this! And thank you T1D1!!! ### 5/5 — Really easy to use *2025-10-23, version 20.0.1* This is a great FREE insulin calculator, very easy to use. I love how it logs your info & generates very clean CSV report. Really nice job! Thank you. ### 5/5 — Amazing! *2025-10-22, version 20.0.1* So, so helpful!! ### 5/5 — Love this App!!! *2025-10-22, version 20.0.1* This app has been so helpful! ## Most critical reviews (10 lowest-rated) ### 1/5 — Garbage App *2025-10-28, version 20.0.2* Absolutely garbage app. Been a type 1 diabetic for 35 years strong now. During the set-up of the App, I answered the trigger questions properly. The end result is a “T1D1 may not be a good fit for you.” To add insult to injury, the reasons why it told me I was not a fit; The same answers I provided which would make me a fit. Sugarmate is a better app, and I suggest Diabetics use that one. ### 2/5 — Has Shortcomings *2026-05-30, version 20.1.1* T1D1 does a fine job estimating the amount of insulin you need (based on doctor recommended parameters) but it lacks the ability to estimate the amount of active insulin in your system which is a HUGE shortcoming. Without that you run the of overdosing yourself with insulin. If they add this feature it would be a much better (and safer) App. ### 4/5 — Customer service *2026-06-23, version 20.1.1* Fast and effective customer service. ### 5/5 — Best app around for diabetes *2026-08-10, version 20.1.1* This is the best app available for diabetes for calculating the amount of insulin you need based on your carbohydrates. It’s quick and simple. ### 5/5 — Everything I need in order to track my sons insulin and carbs *2026-07-31, version 20.1.1* Great app! So helpful and gives me everything I need in one spot for easy tracking ### 5/5 — ❤️Love the App! *2026-07-22, version 20.1.1* Has been very useful 😊 ### 5/5 — it’s a life saver *2026-07-11, version 20.1.1* i love it and it’s the only way i know how much insulin to give!😭🤣 way easier than doing the math out or trying to figure it out using a regular calculator ### 5/5 — Great T1D App *2026-07-11, version 20.1.1* I have recently switched to shots after about a decade of using a pump. It's been super helpful in the transition from a pump that does a lot of the math to shots. I love that the app tells you how long it’s been since you’ve given yourself some insulin. It would be great if you could set how long your insulin on board lasts and the app could at least help or suggest a calculation that accounts for IOB. But it’s easy enough to just calculate IOB on your own. In summary I love this app, it has been super helpful. ### 5/5 — Auto correct feature👍🏼 *2026-07-10, version 20.1.1* Huge fan of the auto corrective dosing in case of low blood sugar! ### 5/5 — Great app *2026-07-10, version 20.1.1* This is what I’ve been looking for! ## Most praised reviews (3 highest-rated) ### 5/5 — Very Helpful App *2026-05-19, version 20.1.1* Some kindhearted people with greats hearts are behind this app. This app has helped streamline so many aspects of being new to T1D for my son and me. And any questions I had were answered promptly, as well as any suggestions I had were met with openness to make changes that benefit us all. ### 5/5 — Valuable tool! *2026-05-02, version 20.1.1* T1Ds and or love ones could find this useful. I use it frequently. ### 5/5 — Wonderful app *2026-04-29, version 20.1.1* App was recommended to me by diabetic educator. I find it very helpful to calculate my bolus injections. Two simple inputs for each calculation give me an accurate dose. I would note that it’s important to go into the settings and set your desired target glucose, correction factor, and carb ratio. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-06.*