# Tandem t:slim Mobile App — t:slim X2 insulin pump > Smartphone companion app for t:slim X2 insulin pump, enabling bolus delivery and data viewing. (iPhone/iPad app by Tandem Diabetes Care Inc..) - Source: https://appshunter.io/ios/app/tandem-tslim-mobile-app/id1455916023 (this page in markdown: same URL + `.md`) - Developer: [Tandem Diabetes Care Inc.](https://appshunter.io/developer/955568376) - Category: Medical, Health & Fitness - Price: Free - Rating: 3.10/5 from 2,123 App Store ratings · 361 written reviews indexed - Age rating: 4+ - Requires: iOS 18.0 · 157 MB - Languages: German (Germany), Danish, American English, Finnish, Canadian French, Italian, Dutch, Norwegian Bokmål, European Portuguese, Swedish and 2 more - Released: 2026-05-04 - Data updated: 2026-08-28 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/tandem-tslim-mobile-app/id1455916023/reviews.md ## What is Tandem t? The Tandem t:slim mobile app, the companion app for your pump. Always consult a healthcare professional for information about how to manage diabetes. - Deliver a bolus from your smartphone* - Serves as a discreet, secondary display for the pump† - View pump data and receive push notifications directly on your smartphone‡ - Wirelessly upload pump therapy data to the cloud† Note: Units of measure on app may differ from those pictured above. Mobile app units of measure will match the paired t:slim X2 insulin pump. ALWAYS READ THE LABEL AND FOLLOW THE DIRECTIONS FOR USE. The electronic instructions for use for the Tandem t:slim mobile app (Basic UDI-DI: 0850018992TF-0011603KR) can be accessed through the t:slim X2 user guide, available here: https://www.tandemdiabetes.com/support/resources/documents. Upon request, a printed copy of the user guide can be provided within 7 days at no additional cost. If the language set on your smartphone is supported by the mobile app, then the mobile app will display in that language. If the language set on your smartphone is not supported by the mobile app, then the mobile app will display in English. *Requires a t:slim X2 insulin pump from Tandem Diabetes Care and a compatible smartphone. Additional restrictions apply. Refer to the user guide for t:slim X2 insulin pump for a list of warnings and precautions. †The information on the Tandem t:slim mobile app display may not be identical to the current status of your pump. Wireless uploads from the Tandem t:slim mobile app to the cloud-based Tandem Source platform require a compatible phone and an internet or wireless data connection. Uploads to the Tandem Source platform do not take place in real time and should not be relied upon by healthcare providers, pump users, or caregivers for remote patient monitoring. Standard carrier data rates may apply. ‡You cannot dismiss alerts and alarms from the app and must do so on the pump itself, but once an alert or alarm has been dismissed on the pump it will also disappear from the mobile app. ## Key features - Deliver bolus from smartphone - Discreet secondary pump display - View pump data and notifications - Wirelessly upload therapy data - Smartphone language support ## What do users think of Tandem t? Overall sentiment: neutral **Pros** - 🚀 Convenient mobile bolus - 📊 Helpful data visualization - 🤳 Discreet pump management - 🔋 Reasonable battery impact - 🎉 Game-changing technology **Cons** - 🔌 Frequent connection issues - 🕰️ Annoying time mismatch alerts - 🔒 Limited pump control - 🔍 Missing key features (extended bolus, alarms) - 🐛 Buggy and unstable at times **Commonly reported bugs** - App crashes on launch - Pump battery draining rapidly - Glucose data not syncing properly - Repeated connection losses **Most requested features** - Add extended bolus capability - Allow clearing of pump alarms from app - Integrate with Apple Health/Watch - Expand data history and customization - Improve app stability and reliability ## Recent user reviews (10 of 361) All indexed reviews: https://appshunter.io/ios/app/tandem-tslim-mobile-app/id1455916023/reviews.md ### 5/5 — Sehr praktisch *2026-08-21* Ich finde die App wirklich gut. Es stehen viele Infos zusammengefasst an einem Ort und das auch noch recht übersichtlich. Bis jetzt habe ich absolut nichts zu meckern 👍🏻⭐️ ### 3/5 — Solide *2026-08-20* Der Prozess, die Pumpe mit der App zu verbinden war bei mir leider sehr anstrengend. Es dauerte lange und die Pumpe musste ausgetauscht werden. Man muss sich hier und dort anmelden, da und hier runterladen, Videos schauen etc. etc. Das updaten ist wirklich mies gemacht und wird auf der Website gelobt… verstehe ich nicht… Nun gut. Die App macht was es soll. Man kann damit einen Bolus abgeben. Heutzutage ist die Technik der Pumpen schon sehr weit voraus und die X2 hinkt hinterher. Die App ist gut, übersichtlich und macht was es soll. Man kann damit einen Bolus abgeben, den BZ korrigieren und bekommt Alarme direkt aufs Handy. Den Bolus per App unterwegs eingeben zu können hilft mir sehr und macht meinen Alltag leichter. Die ist genauso wie bei jedem AID System, was es schon seit vielen Jahren gibt… ohne die Dexcom g7 App würde ich diese App aber niemals verwenden. Dafür verliert sie zu schnell den Kontakt zur Pumpe. Im Sekundentakt… außerdem kriegt man wirklich viele Alarme hintereinander. Man kann das nur schlecht einstellen und nicht pausieren und wird doppelt zugespamt, da die Pumpe ja auch alarmiert bzw. vibriert… das nervt. Ansonsten solide. Sollte man unbedingt benutzen, wenn man die X2 hat. Aber Tandem hinkt halt ordentlich den anderen Pumpen hinterher… **Developer response:** Thank you for letting us know about your experience. We encourage you to contact our Software Support Team directly at +1 (877) 801-6901 or if you’re located outside of the United States, please contact your local distributor directly at tandemdiabetes.com/contact-us/international-distributors and they will be able to assist further. ### 1/5 — Notification update *2026-08-19* They need to prolong the notification updates to be longer then what they are at the moment, to be notified that your low every 5 minutes with a high pitched noise at 3am or in public is embarrassing especially as it takes longer than that for your body to react to whatever it is you’ve ingested to help the situation, it also doesn’t help when linked with the Dexcom sensor and have that going off as well, I sound like an ice cream van!! **Developer response:** Thank you for letting us know about your experience. We encourage you to contact our Software Support Team directly at +1 (877) 801-6901 or if you’re located outside of the United States, please contact your local distributor directly at tandemdiabetes.com/contact-us/international-distributors and they will be able to assist further. ### 1/5 — Dr *2026-08-15* The app is fine in everyday use. Just don’t try to use the “Help” function’!! This will just take you round and round in circles without providing any helpful information at all. FAQs do not exist despite what it says on the menu. Worse still Tandem have been aware of this for ages but have done nothing about it!! So much for “making life easier for diabetics” ### 3/5 — Gut aber fehlen 2-3 Funktionen um sinnvoll zu sein *2026-08-09* Die App macht schon das Leben einfacher, da man nicht mehr ständig an die Pumpe muss aber nur Bolus abgeben zu können ist nicht Sinnvoll wenn man später doch an die Pumpe gehen muss um zb eine Aktivität zu starten. Für mich fehlen einige Funktionen. Ich hoffe, dass Sie daran arbeiten, da sie meiner Meinung nach die App erst richtig komplett machen würden: 1- Warum ist es nicht möglich, die Insulinabgabe über die App zu stoppen oder fortzusetzen? Das ist manchmal notwendig, und die Pumpe dafür herauszuholen – jetzt, wo ich die App habe – ist einfach nervig. :-( 2- Das ist mir sogar noch wichtiger: Warum kann ich meine persönlichen Pumpenprofile nicht über die App ändern?! Das ist die Funktion, die ich am häufigsten nutze, besonders vor dem Sport. Auch das wäre für mich eine absolute Pflichtfunktion für die App. 3-Es wäre zumindest großartig, wenn man die Sport-Aktivität über die App aktivieren könnte. Vielen Dank im Voraus für Ihre Antwort und hoffentlich baldige App-Updates. ### 4/5 — Has potential *2026-08-06* It works well in general. It needs extended bolus and exercise mode activation. ### 4/5 — Great App *2026-08-06* Love this app, everyone should use it, very good! I would like to see it also have extended bolus function and activity function added to it in Canada. ### 1/5 — I need help *2026-07-29* It says it connected but when I try and since my data and actually use the pp it won’t let me , I’ve tried everything that the doctors and website had told me to do, it says it is a technical issue error **Developer response:** Thank you for letting us know about your experience. We encourage you to contact our Software Support Team directly at +1 (877) 801-6901 or if you’re located outside of the United States, please contact your local distributor directly at tandemdiabetes.com/contact-us/international-distributors and they will be able to assist further. ### 1/5 — Pump Real-time Data?? *2026-07-25, version 2.12.1* Your competition has near realtime pump, insulin data telemetry; how about a caregiver app that lets us help our kids maintain sites, pump battery, insulin levels… y’all are so slow on features 😑 ### 5/5 — viel besser als Medtronic *2026-07-23* Bolus über die App abzugeben, erleichtert vieles, sehr praktisch. ## Frequently asked questions about Tandem t ### What does the Tandem t:slim mobile app do? The app serves as a smartphone companion for the t:slim X2 insulin pump. It allows users to deliver insulin boluses directly from their phone, view pump data, and receive notifications. It also offers a discreet secondary display for pump status and can wirelessly upload therapy data to the cloud. ### What are the key features of the app? Key features include the ability to deliver a bolus from your smartphone, use your phone as a discreet secondary display for the pump, view pump data and receive push notifications, and wirelessly upload pump therapy data to the cloud. The app also supports smartphone language settings. ### Is the Tandem t:slim mobile app free to use? Yes, the app is free to download and use. It is a companion app designed to work with the t:slim X2 insulin pump and does not have any in-app purchases or advertisements mentioned in its description. ### What are the compatibility requirements for the app? To use the app, you need a t:slim X2 insulin pump from Tandem Diabetes Care and a compatible smartphone. Additional restrictions apply, and users should refer to the t:slim X2 insulin pump user guide for a comprehensive list of warnings and precautions. ### Can I dismiss alerts and alarms from the app? No, you cannot dismiss alerts and alarms directly from the mobile app. You must dismiss them on the t:slim X2 insulin pump itself. Once an alert or alarm is dismissed on the pump, it will then disappear from the mobile app display. ## Version history (last 5 releases) ### 2.13.1 — 2026-08-27 Overall app performance updates ### 2.12.1 — 2026-04-27 Overall app performance updates ### 2.11.2 — 2025-12-02 Overall app performance updates ### 2.11.1 — 2025-10-23 - Introducing multi-language support - Overall app performance updates ### 2.9.1 — 2025-05-01 Updated description for improved clarity and accuracy. Overall app performance updates. ## Apps similar to Tandem t | App | Rating | Price | Category | | --- | --- | --- | --- | | [Dexcom G6](https://appshunter.io/ios/app/dexcom-g6/id1209262925) | 3.1 (9,014) | Free | Medical | | [Omnipod 5 App](https://appshunter.io/ios/app/omnipod-5-app/id1528575090) | 3.5 (1,488) | Free | Medical | | [mybyram Order Medical Supplies](https://appshunter.io/ios/app/mybyram-order-medical-supplies/id1536604601) | 4.8 (37,770) | Free | Medical | | [Dexcom G7](https://appshunter.io/ios/app/dexcom-g7/id1569432518) | 3.1 (8,312) | Free | Medical | | [Dexcom Clarity](https://appshunter.io/ios/app/dexcom-clarity/id1019225730) | 4.6 (12,930) | Free | Medical | | [Glooko - Track Diabetes Data](https://appshunter.io/ios/app/glooko-track-diabetes-data/id471942748) | 4.7 (9,720) | Free | Medical | ## More apps by Tandem Diabetes Care Inc. - [t:simulator™ App](https://appshunter.io/ios/app/tsimulator-app/id955568377) - [Sugarmate by Tandem](https://appshunter.io/ios/app/sugarmate-by-tandem/id1111093108) - [Tandem Mobi® mobile app](https://appshunter.io/ios/app/tandem-mobi-mobile-app/id6449297027) All apps by Tandem Diabetes Care Inc.: https://appshunter.io/developer/955568376 ## Related topics [tslim](https://appshunter.io/ios/topics/tslim) · [tandem t slim](https://appshunter.io/ios/topics/tandem-t-slim) · [tandem diabetes](https://appshunter.io/ios/topics/tandem-diabetes) · [tandem mobi](https://appshunter.io/ios/topics/tandem-mobi) · [insulin pump](https://appshunter.io/ios/topics/insulin-pump) · [tandem mobile](https://appshunter.io/ios/topics/tandem-mobile) · [tandem simulator](https://appshunter.io/ios/topics/tandem-simulator) · [tandem](https://appshunter.io/ios/topics/tandem) · [t1d1 mobile](https://appshunter.io/ios/topics/t1d1-mobile) · [lispro](https://appshunter.io/ios/topics/lispro) · [sugarmate by tandem](https://appshunter.io/ios/topics/sugarmate-by-tandem) · [tidepool loop](https://appshunter.io/ios/topics/tidepool-loop) · [t1d1](https://appshunter.io/ios/topics/t1d1) · [app demo](https://appshunter.io/ios/topics/app-demo) · [tardem](https://appshunter.io/ios/topics/tardem) · [twiist aid system](https://appshunter.io/ios/topics/twiist-aid-system) --- *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 2026-08-28.*