PumpDash puts Tandem Mobi* pump data and CGM readings together in one calm, readable view: on a little screen by your desk, on your computer, and on your phone.
Built by a type 1 diabetes parent who wanted the answers without picking up her daughter's phone.
On your desk
The desktop app is laid out for a 1280×400 bar display that lives below your main screens. It works in any window on Windows and Mac, too.
The biggest thing on the screen, with the change since the last reading and how many minutes old it is.
3 to 24 hours of glucose with boluses, corrections, suspends and site changes, and basal underneath.
IOB, average, carbs and time in range across the top, with Control-IQ Exercise or Sleep mode when it's on; bolus, insulin, battery, site and sensor below.
Glance mode
One click strips the board down to the reading, the trend arrow, insulin on board, pump battery and insulin remaining, plus how old the pump data is. Out-of-range readings are named in words, so color is never the only signal.
Why PumpDash exists
My daughter was diagnosed with type 1 diabetes. She wears a Tandem Mobi* pump and a CGM, and the technology is amazing. But everything I check as her parent was split across apps on her phone.
I couldn't find exactly what I wanted, so I built it. PumpDash started in May 2025 as a few Python scripts and grew into a desktop app and a phone app.
Now it all sits on a 7-inch screen below my monitors, and one look tells me everything.
Lisa Mays
Founder, Hopes Tinkery
What I asked all day
One glance
Every answer on one screen, each with its age beside it.
Every answer in one place. No app-hopping. No guessing how old the number is.
Features
Every number says how old it is, and every estimate says it's an estimate.
The current reading, its trend arrow and the change since the last reading, with 3, 6, 12 and 24-hour graphs.
Meal boluses, corrections, suspends and site changes on their own row under the graph, with basal beneath. Tap one for the carbs, units and time.
IOB, the last bolus, extended bolus status and today's carbs, without opening a single app.
Insulin remaining, battery, last full charge, site age and sensor countdown along the bottom of the screen.
Your 24-hour average glucose and time in range, using the high and low lines from the pump's own settings.
Every number knows how old it is. Stale values dim and say so, and anything unknown shows as a dash, never as zero.
Between pump uploads, insulin on board and insulin remaining are projected forward, marked EST., and replaced with the pump's own numbers the moment fresh data lands.
One click turns the dashboard into an across-the-room view: the reading, the arrow, IOB, battery and insulin left.
Explore everything with a simulated day of data. No accounts, no network, and nothing real on screen.
On your phone
Native apps for iPhone and Android on one shared core, so both show the same numbers and the same warnings.
The reading and trend up top, pump essentials in the overview pills, and a chart with meals, corrections, suspends and basal underneath.
Events
Meal boluses, corrections and suspends sit on their own row under the chart, so you can see what happened and when without leaving the home screen. Tap a marker for the carbs, the units and the exact time, then jump straight to every event.
Meal bolus
Carbs, units and time
Correction
Units delivered and time
Suspend
When delivery stopped
Privacy and safety
A child's health data and the logins to two medical accounts deserve more care than a typical app gives them.
Private by design
No PumpDash server
Data goes straight from Tandem Source* to your device, and nowhere else.
No analytics, no tracking
No ads and no crash-reporting SDKs. The iPhone app declares no data collected.
Logins in secure storage
Windows Credential Manager, the macOS and iPhone Keychain, or the Android Keystore. Never a plain file.
A locked-down desktop service
The desktop app's background service needs a fresh random key every launch and refuses requests from web pages.
Safe to glance at
Read-only
PumpDash never sends anything to the pump and never changes a setting.
Stale never looks current
CGM readings are marked stale after 12 minutes; pump values dim after 90.
Estimates are labeled
Projected values between uploads carry an EST. badge until real data replaces them.
Unknown is never zero
A missing value shows as a dash, so “no data yet” can't pass for “none”.
If the connection drops, the last reading turns amber and says “not connected”, pump values dim, and PumpDash keeps retrying on its own. Late uploads, expired sessions and network hiccups are handled without you watching it.
Not a medical device.
PumpDash is not a medical device. Information it displays may be delayed, incomplete, estimated or unavailable. Never use it to calculate insulin doses or make treatment decisions; rely on your pump, CGM, meter, the official manufacturer apps and your healthcare team.
Not affiliated with or endorsed by Tandem Diabetes Care.
PumpDash is an independent app made by Hopes Tinkery LLC. It is not affiliated with, endorsed by, sponsored by or approved by Tandem Diabetes Care, Inc.
Themes
The same screen and the same numbers in every theme. Pick the one that suits the room.
Setup
Install Sugarmate by Tandem* on the phone paired with the pump and connect Tandem Source*. Your pump then updates about every 5 minutes instead of about once an hour.
Download the Windows or Mac app, or join the iPhone beta.
Sign in with your Tandem Source* login. Glucose and pump data both come from there, so it's the only account you need.
Your sign-in is checked as you enter it and saved in your system's secure storage, so you stay signed in. Want to look around first? Turn on Demo Mode and explore a simulated day with nothing connected.
Step-by-step install guide
Platforms
Windows 10 or 11, 64-bit
Version 2.0.0. The full dashboard, glance mode and all six themes.
macOS 13.3 or later, Apple Silicon
Version 2.0.0. Same dashboard as Windows, built for M-series Macs.
iOS 17 or later
Native SwiftUI app with the same glance-first layout. Testing through TestFlight.
Android 8.0 or later
Native Jetpack Compose app on the same shared core as iPhone.
Planned
The current reading, trend and pump essentials on your wrist.
Planned
A glanceable reading on the car's display, with its age always visible.
Questions
Accounts, update timing, estimates and privacy. The rest is on the support page.
All questions and supportPumpDash is built and tested with a Tandem Mobi* insulin pump, read through Tandem Source*. Glucose comes from the CGM readings the pump uploads to Tandem Source*, so there is no separate CGM account to connect.
Glucose and pump data arrive together when the pump uploads to Tandem Source*, bringing its CGM readings with it: about once an hour on its own, or about every 5 minutes, give or take a few, with Sugarmate by Tandem* connected to Tandem Source*. PumpDash learns your pump's rhythm and checks right when the next upload is due.
Between uploads, PumpDash projects insulin on board and insulin remaining forward so the screen stays useful. Those values are labeled as estimates and snap back to the pump's own numbers as soon as fresh data arrives. Estimates can be wrong.
No. PumpDash is read-only. There is no code path that sends anything to the pump.
Straight from Tandem Source* to your own device, and nowhere else. There is no PumpDash server, no analytics and no crash reporting.
Windows and Mac today. iPhone in beta, Android on the way.
