# T:slim app-ing

**URL:** <https://forum.fudiabetes.org/t/t-slim-app-ing/15691>\
**Category:** Pump\
**Created:** [December 18, 2025, 8:01pm UTC](https://forum.fudiabetes.org/t/t-slim-app-ing/15691 "2025-12-18T20:01:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cogdog](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/cogdog/32/5436_2.png) [@cogdog](https://forum.fudiabetes.org/u/cogdog)\
**Post date:** [December 18, 2025, 8:01pm UTC](https://forum.fudiabetes.org/t/t-slim-app-ing/15691/1 "2025-12-18T20:01:31Z")

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Just spotted in email that the T:slim pump has a mobile app, so I had to download. It does offer a nice quick view of numbers and an option to bolus from phone (just tried, yep it works).

 ![IMG_8262](https://canada1.discourse-cdn.com/flex030/uploads/fudiabetes/original/2X/c/c6952f27ba632263bff6d2bad5bc7ef0b27a15bb.jpeg)

That’s fine though it’s certainly no big deal to do on pump (1-2-3 taps aside). The thing I liked when I read the blurb was that it continually synced data to tandem source, so I won’t need to remember to connect the pump and upload before a call with my educator.

it took some time for the first upload, the tandem source error message indicated it was in progress and the link it provided for s so called help page does not exist

 ![Screenshot 530](https://canada1.discourse-cdn.com/flex030/uploads/fudiabetes/original/2X/5/5aa786fbf1d9976b8e0395a27b71d057b7fefd69.jpeg)

But after a bit it’s all there and now seems to be in sync. Taking care of the data upload is a win for me.

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**Author:** ![RachelMaraii](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/rachelmaraii/32/12439_2.png) [@RachelMaraii](https://forum.fudiabetes.org/u/RachelMaraii)\
**Post date:** [December 19, 2025, 12:25am UTC](https://forum.fudiabetes.org/t/t-slim-app-ing/15691/2 "2025-12-19T00:25:46Z")

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I’m glad you discovered it!

They’ve made some good updates to make the app more reliable now too. About once every couple days I’ll still get a “lost connection with pump” error – but I just turn off Bluetooth on my phone for a few seconds, turn it back on, and voila.

I would love for them to eventually let us initiate an extended bolus from the app too!