Comparison

Tandem t vs Dexcom G7

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Deliver bolus from smartphone
  • Discreet secondary pump display
  • View pump data and notifications
  • Wirelessly upload therapy data
  • Smartphone language support
Read 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.

About

Dexcom G7

This app provides real-time glucose monitoring for diabetes management. It offers customizable alerts for high or low glucose levels and allows sharing data with loved ones and healthcare teams. Integrates with smartwatches and other health apps for comprehensive insights.

Highlights
  • Real-time glucose monitoring
  • Customizable high/low glucose alerts
  • Data sharing with followers
  • Integration with healthcare teams
  • Apple Watch connectivity
  • Digital health app integrations
  • Fasting glucose logging
Features
Currently charting
Read full description

Know your glucose number and where it’s heading with the Dexcom G7 Continuous Glucose Monitoring (CGM) System. Only use this app if you have the Dexcom G7 CGM System.* Before you start making treatment decisions with Dexcom G7, work with your healthcare professional to learn how. The Dexcom G7 Continuous Glucose Monitoring (CGM) System supports more empowered and integrated diabetes management. Its low-profile, wearable sensor provides real-time glucose data to a user’s compatible display device, no fingersticks required.† Dexcom G7 also offers customizable alerts that can help warn of high or low glucose levels, as well as remote monitoring and reporting options that help keep users connected to their loved ones and care teams anytime, anywhere. *To view a list of compatible devices, visit dexcom.com/compatibility. †If your glucose alerts and readings from Dexcom G7 do not match symptoms or expectations, use a blood glucose meter to make diabetes treatment decisions. In addition to the accurate performance provided by the Dexcom Sensor, you’ll receive other valuable features: • Share your glucose data with up to 10 followers who can monitor your glucose data and trends on their compatible smart device with the Dexcom Follow app. Share and Follow functions require an internet connection • Clarity Clinic is now integrated into the G7 connections tab, making it easy to share data with your Clarity healthcare team • Now you can log your estimated fasting glucose in the Dexcom G7 app. Regularly tracking your fasting glucose allows you and your healthcare team to identify trends in your glucose levels • Connect G7 Sensor directly to your Apple Watch, giving you the freedom and convenience of real-time glucose readings on your wrist even when you’re not near your phone** • Digital Health app integrations allow you to share your glucose data with third-party health apps and lifestyle devices • Now you can see your health and activity data from connected apps and devices on your G7 trend graph • Add a shortcut so you can ask Siri to read your current glucose value, using a custom phrase • Dexcom Clarity summary insights are integrated into the G7 app, so that you can see both real-time and retrospective glucose insights from the same app Apple Watch: • View your glucose information, trend graph, and alerts right from your wrist with the Dexcom G7 Apple Watch app. Watches require compatible smart device to use app. G7 app features and partner integrations may differ by region. Refer to your user guide for more information. **Compatible smartphone is required to pair a new Dexcom G7 sensor with a compatible Apple Watch. Dexcom G7 users must continuously have their smartphone within 20 feet / 6 meters to utilize the Share/Follow features. Apple Watch is not capable of Share/Follow.

Screenshots

Tandem t4 screens
Dexcom G74 screens

Verdict

The call

Tandem t and Dexcom G7 both sit at 3.1 stars, but that hides the real split: 37% of Tandem t's written reviews are positive against 16% of Dexcom G7's. Dexcom G7's advantage is chart position (#22 vs unranked) and ratings volume (8.6K vs 2.1K). On price, rating, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.1 for Tandem t against 3.1 for Dexcom G7. Both are backed by a comparable volume of ratings — 2.1K and 8.6K respectively. Written reviews are what separate them: 37% of Tandem t's written reviews are positive against 16% of Dexcom G7's.

UpkeepUpdate frequency

Tandem t ships an update every 2 months, Dexcom G7 every 6 weeks. Both last shipped on September 24, 2026.

Scorecard3 real differences · 8 level
Tandem t versus Dexcom G7: the parameters behind the verdict, then further details
ParameterTandem tDexcom G7
PriceFreeFree
Rating3.1 (2.1K ratings)3.1 (8.6K ratings)
Positive reviews37.4% of reviews — better15.8% of reviews
Number of ratings2.1K8.6K — better
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#22 — better
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS18.0 — better18.6
Further details — not scored
Size157 MB599 MB
Age rating4+4+
DeveloperTandem Diabetes Care Inc.Dexcom

Customer experience

Tandem t

All ratings2,123 ratings
Positive44.8%
Neutral16.1%
Negative39.1%
Written reviews382 reviews
Positive37.4%
Neutral17.8%
Negative44.8%

Dexcom G7

All ratings8,591 ratings
Positive46.8%
Neutral12.0%
Negative41.2%
Written reviews2,381 reviews
Positive15.8%
Neutral14.2%
Negative70.0%

User reviews

Tandem t

From 2.1K App Store ratings

What we love

  • 🚀 Convenient mobile bolus
  • 📊 Helpful data visualization
  • 🤳 Discreet pump management
  • 🔋 Reasonable battery impact
  • 🎉 Game-changing technology

Room to improve

  • 🔌 Frequent connection issues
  • 🕰️ Annoying time mismatch alerts
  • 🔒 Limited pump control
  • 🔍 Missing key features (extended bolus, alarms)
  • 🐛 Buggy and unstable at times

Dexcom G7

From 8.6K App Store ratings

What we love

  • 🚀 Quick sensor warmup time
  • 🌟 Smaller and more comfortable sensor
  • 🔍 Accurate glucose readings
  • 📊 Clarity integration in the app
  • 🕰️ 12-hour grace period before sensor expiration

Room to improve

  • 🔌 Frequent signal loss and connection issues
  • 🔔 Obnoxious and disruptive alert sounds
  • 🧭 Lack of customization for alert settings
  • 🔍 Inconsistent and inaccurate readings at times
  • 🧠 Confusing and unintuitive app interface

Bugs and 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

Dexcom G7

Reported bugs

5 issues
  • App freezes when accessing the Connections tab
  • Calibration process often gets stuck or fails
  • Sensor failure and disconnection issues
  • Inconsistent behavior with low power mode and screen time
  • Location-based restrictions preventing app setup

Requested features

5 requests
  • Add a widget for quick glucose level access
  • Improve Apple Watch integration and functionality
  • Allow customization of target glucose ranges
  • Provide more detailed historical data and reporting
  • Implement a dark mode for better visibility

In-app purchases

None

Tandem t

No in-app purchases

None

Dexcom G7

No in-app purchases

Questions

Is Tandem t free?
Tandem t is free to download, with no in-app purchases.
Is Dexcom G7 free?
Dexcom G7 is free to download, with no in-app purchases.
Which has better reviews, Tandem t or Dexcom G7?
Tandem t and Dexcom G7 are both rated 3.1 out of 5 on the App Store, from 2.1K and 8.6K ratings respectively.
Do Tandem t or Dexcom G7 have ads?
Neither Tandem t nor Dexcom G7 shows ads.
Which is updated more often, Tandem t or Dexcom G7?
Tandem t ships an update every 2 months, and Dexcom G7 every 6 weeks. Most recently, Tandem t was updated on September 24, 2026 and Dexcom G7 on September 24, 2026.

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