Tandem t:slim Mobile App2.13.1 - App Store

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.

Version History Overall app performance updates 2.13.1 Aug 27 Overall app performance updates 2.12.1 Apr 27 Overall app performance updates 2.11.2 12/02/2025 - Introducing multi-language support
- Overall app performance updates 2.11.1 10/23/2025 Updated description for improved clarity and accuracy.

Overall app performance updates. 2.9.1 05/01/2025 • Improved workflows for login, account creation, password recovery, and updating account settings
• Opt-in user consents for improved data analytics and performance enhancements
• Improved stability of background processes to reduce the likelihood of crashes
• Overall app performance updates 2.9 03/12/2025 - An update to help address the occurrence of pump battery depletion and to improve performance and stability
- 24-hour time format now available. The time shown on the app will align with the time format on the smartphone
- Updated user experience in the Settings section to provide clearer labels, icons, and subtitles, including the addition of the App section for information on your Account, Paired Pump, and Graph Display
- Changed status when CGM transmitter battery has an error
- CGM status now shows values received from the pump as they become available even if CGM is currently in a warmup period
- Addressed an issue where some users were experiencing a delay in up-to-date bolus information displaying in the graph data 2.8.2 08/20/2024 Overall app performance updates 2.7.1 03/18/2024 - Improved readability and display of information on event cards
- Implementation of more detailed error codes to better assist with troubleshooting
- Allows for detection of Tandem Mobi mobile app installation on the same device to disable t:connect mobile app if both are detected on the device
- Expanded CGM compatibility to now include FreeStyle Libre 2 Plus sensor to the list of compatible CGM sensors, t:slim X2 pump is now compatible with three CGM sensors providing users with more flexibility and options
- Discontinuing support for iOS 15, recommend that users update to a later version of the iOS operating system 2.7 02/12/2024 Overall app performance updates 2.6.2 12/12/2023 Overall app performance updates 2.6.1 12/04/2023 - Addition of a CGM Info screen to easily view your CGM Manufacturer, Model, Serial Number, Sensor Session Start Date, and Sensor Session End Date directly from your compatible smartphone
- Overall app performance enhancements 2.6 11/14/2023 Overall app performance enhancements 2.5.2 09/29/2023 Overall app performance enhancements 2.5.1 09/22/2023 Overall app performance enhancements 2.5 09/18/2023 - Changes to improve mobile app and t:slim X2 insulin pump connectivity. 
- Overall app performance enhancements 2.4.2 05/30/2023 - The feature allowing you to bolus from your smartphone is now compatible with iOS 16 on compatible devices
- New devices have been added to our compatibility list, check tandemdiabetes.com/compatibility for details 2.3.1 10/03/2022 • Users now have the ability to delete their t:connect account directly from the mobile app
• Users can continue to use the app without logging back in to their t:connect account if the connection to the cloud is interrupted for any reason. This update will help continuity of app usage in the event of cloud connectivity disruption. Users are encouraged to sign back in as soon as connection is restored to continue to upload data to the t:connect web application. 2.2 09/06/2022 • Bolus from your smartphone! With a compatible smartphone + t:slim X2 insulin pump you can now bolus from your smartphone. Check your smartphone compatibility at www.tandemdiabetes.com/mobile-bolus
• New App Guide available directly within the app to assist with your smartphone setup, compatibility and general troubleshooting 2.1.3 07/12/2022 Users can now see their current app version on the login screen.
Fix: Personal Profiles data was not showing up in earlier versions of the t:connect mobile app and displayed NA for some users. This has been corrected and Personal Profiles now display accurately in the mobile app.
Overall app performance improvements. 1.7 02/08/2022 t:connect® mobile app is now compatible with iOS 15. 
Overall app performance improvements 1.6 11/04/2021 CGM data attribution added to dashboard
General bug fixes to improve your experience 1.5 08/09/2021 Time in Range added to your dashboard! Now displays the percentage of time your CGM readings are in your target glucose limit for the last 24hrs.
General bug fixes to improve your experience 1.4 03/24/2021 t:connect® mobile app is now supported by iOS 14.
Pre-populated glucose thresholds to ADA recommended values for new users during account creation
Bug Fixes 1.2 10/23/2020 1.1.1 07/07/2020