Dexcom G6 Simulator vs Tandem t
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dexcom G6 Simulator
This app simulates the features and scenarios of a continuous glucose monitoring system. It showcases sample data, trend displays, and setup options without using live patient information.
- CGM scenario samples
- Trend displays
- Setup feature examples
- Simulation only
- No live data
Read full descriptionHide full description
Dexcom G6 Simulator app highlights features from the Dexcom G6 CGM System. The simulator displays samples of CGM scenarios, trends, and various setup features associated with the Dexcom G6 CGM App. This app is for simulation purposes only and contains no live CGM data.
Tandem t
This app acts as a smartphone companion for a specific insulin pump, allowing users to deliver insulin doses and view pump data remotely. It provides discreet access to essential information and notifications, enhancing convenience for pump users.
- Deliver bolus from smartphone
- Discreet secondary pump display
- View pump data and notifications
- Wirelessly upload therapy data
- Smartphone language support
Read full descriptionHide full description
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.
Screenshots
Verdict
Dexcom G6 Simulator and Tandem t both sit at 3.2 stars, but that hides the real split: 37% of Tandem t's written reviews are positive against 5% of Dexcom G6 Simulator's. Tandem t also leads on ratings volume (2.2K vs 71) and update cadence (every 2 months vs every 7 months). Dexcom G6 Simulator's advantage is iOS requirement (9.0 vs 18.0). On price, rating, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 3.2 for Dexcom G6 Simulator against 3.1 for Tandem t. That said, the two scores are not equally well evidenced: Tandem t has 2.2K ratings behind it against 71, so its average is the more settled of the two. Written reviews are what separate them: 5% of Dexcom G6 Simulator's written reviews are positive against 37% of Tandem t's.
Dexcom G6 Simulator ships an update every 7 months, Tandem t every 2 months. Both last shipped on October 29, 2026.
| Parameter | Dexcom G6 Simulator | Tandem t |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (71 ratings) — better | 3.1 (2.2K ratings) |
| Positive reviews | 5.3% of reviews | 36.7% of reviews — better |
| Number of ratings | 71 | 2.2K — better |
| Update frequency | Every 7 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 9.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 41 MB | 157 MB |
| Age rating | 4+ | 4+ |
| Developer | DexCom, Inc. | Tandem Diabetes Care, Inc. |
Customer experience
Dexcom G6 Simulator
Tandem t
Bugs and requests
Dexcom G6 Simulator
Not enough reviews yet to summarise bugs or requests.
Tandem t
Reported bugs
4 issues- App crashes on launch
- Pump battery draining rapidly
- Glucose data not syncing properly
- Repeated connection losses
Requested features
5 requests- 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
In-app purchases
Dexcom G6 Simulator
No in-app purchases
Tandem t
No in-app purchases
Questions
Is Dexcom G6 Simulator free?
Is Tandem t free?
Which has better reviews, Dexcom G6 Simulator or Tandem t?
Do Dexcom G6 Simulator or Tandem t have ads?
Which is updated more often, Dexcom G6 Simulator or Tandem t?
Other comparisons
