# Dexcom G6 vs Tandem t

The clearest difference is update cadence: Tandem t at every 2 months against Dexcom G6's every 4 months. Dexcom G6's advantage is ratings volume (9.1K vs 2.2K). On price, rating, review sentiment and ads there is nothing between them.

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 — 3.1 for Dexcom G6 against 3.1 for Tandem t. Both are backed by a comparable volume of ratings — 9.1K and 2.2K respectively. Written reviews are what separate them: 34% of Dexcom G6's written reviews are positive against 37% of Tandem t's.

Dexcom G6 ships an update every 4 months, Tandem t every 2 months. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Dexcom G6 | Tandem t |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (9.1K ratings)](https://appshunter.io/ios/app/dexcom-g6/id1209262925/reviews)** | [3.1 (2.2K ratings)](https://appshunter.io/ios/app/tandem-tslim-mobile-app/id1455916023/reviews) |
| Number of ratings | **9.1K** | 2.2K |
| Positive reviews | 34.1% of reviews | **36.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 66 MB | 157 MB |
| Requires iOS | 18.6 | **18.0** |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DexCom, Inc.](https://appshunter.io/developer/457035738) | [Tandem Diabetes Care, Inc.](https://appshunter.io/developer/955568376) |

## What reviewers say

### Dexcom G6

[App page](https://appshunter.io/ios/app/dexcom-g6/id1209262925)

Monitor your glucose levels in real-time with continuous glucose monitoring. Receive personalized alerts for high or low glucose, and share your data with loved ones. This app is designed for individuals managing diabetes with compatible CGM systems.

**Highlights:** Real-time glucose readings, Personalized trend alerts, Customizable alert schedules, Share glucose data with followers, Health app integration, Apple Watch app support

**Features:** Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 🚀 Continuous glucose monitoring
- 📈 Helpful for managing diabetes
- 🤝 Shares data with others
- 🔋 Long-lasting sensor

**What reviewers complain about**

- 🔊 Overly loud alerts
- 🔄 Frequent signal loss
- 🤯 Inconsistent accuracy
- 📱 App crashes and bugs
- 🕰️ Short sensor lifespan

**Reported bugs**

- App unable to reconnect after signal loss
- Calibration issues and errors
- Notifications not working as expected

**Requested features**

- Add notes for carbs and exercise
- Customizable alert settings
- Improved Apple Watch integration
- Dark mode option


### Tandem t

[App page](https://appshunter.io/ios/app/tandem-tslim-mobile-app/id1455916023)

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

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

- App crashes on launch
- Pump battery draining rapidly
- Glucose data not syncing properly
- Repeated connection losses

**Requested features**

- 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


## Frequently asked questions

### Is Dexcom G6 free?

Dexcom G6 is free to download, with no in-app purchases.

### Is Tandem t free?

Tandem t is free to download, with no in-app purchases.

### Which has better reviews, Dexcom G6 or Tandem t?

Dexcom G6 is rated higher. Dexcom G6 averages 3.1 out of 5 from 9.1K ratings, while Tandem t averages 3.1 from 2.2K ratings.

### Do Dexcom G6 or Tandem t have ads?

Neither Dexcom G6 nor Tandem t shows ads.

### Which is updated more often, Dexcom G6 or Tandem t?

Dexcom G6 ships an update every 4 months, and Tandem t every 2 months. Most recently, Dexcom G6 was updated on November 1, 2026 and Tandem t on October 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*