# t:simulator™ App

> Insulin pump touchscreen interface simulator for educational purposes. (iPhone/iPad app by Tandem Diabetes Care, Inc..)

- Source: https://appshunter.io/ios/app/tsimulator-app/id955568377 (this page in markdown: same URL + `.md`)
- Developer: [Tandem Diabetes Care, Inc.](https://appshunter.io/developer/955568376)
- Category: Medical, Health & Fitness
- Price: Free
- Rating: 3.60/5 from 116 App Store ratings · 66 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.1 · 32 MB
- Languages: American English, Czech, Danish, Dutch, Finnish, Canadian French, German (Germany), Italian, Norwegian Bokmål, Brazilian Portuguese and 2 more
- Released: 2015-02-19
- Data updated: 2026-08-25
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/tsimulator-app/id955568377/reviews.md

## What is t?

The t:simulator™ App is an easy way to explore the simple touchscreen interface of the t:slim X2™ Insulin Pump from Tandem Diabetes Care, no prescription or insurance verification required!  Whether you’re a person living with diabetes, a relative or caregiver, or a healthcare provider, we make it simple to explore the t:slim X2 Pump’s features on your mobile device.

THIS APPLICATION IS FOR DEMONSTRATION PURPOSES ONLY. IT SHOULD NOT BE USED FOR THERAPY DECISIONS.

Due to the variety of sizes of compatible devices, the t:simulator App may not display the pump at actual size. Actual size is 2” x 3.13”. Please refer to the Technical Specifications in the Resources section of the app for more detailed information.

## Key features

- Explore touchscreen interface
- Demonstrates pump features
- No prescription required
- Educational tool
- Mobile device compatible

## What do users think of t?

Overall sentiment: mixed

**Pros**

- 👍 Great for education and training
- 👍 Realistic pump interface replica
- 👍 Useful for pre-pump decision making
- 👍 Easy to use and understand
- 👍 Helpful for understanding the pump
- 👍 Good for familiarization before getting the pump
- 👍 Allows testing features before purchase
- 👍 Simplifies pump operation understanding

**Cons**

- 🐛 Simulator not interactive
- 🐛 Doesn't simulate real-world issues (occlusions)
- 🐛 Lacks confirmation screens and alarms
- 🐛 Not a true simulation of pump usage
- 🐛 Only shows basic functions
- 🐛 App crashes frequently
- 🐛 Incompatible with newer iOS versions
- 🐛 Lagging and not working properly
- 🐛 Algorithm is fundamentally flawed
- 🐛 Ignores insulin on board
- 🐛 Causes unnecessary highs and lows
- 🐛 No customer feedback mechanism
- 🐛 Substandard product
- 🐛 Not available in Canada/Europe
- 🐛 USBC Lightning adapter needed for iPad
- 🐛 Primarily aimed at selling CGM
- 🐛 Doesn't display in mg/dl
- 🐛 Can't control pump via Bluetooth
- 🐛 Doesn't update frequently
- 🐛 Useless app
- 🐛 Simulator doesn't work
- 🐛 Horrible experience
- 🐛 Doesn't work like a real pump

**Commonly reported bugs**

- App won't open once downloaded
- Simulator crashes on launch
- App broken on iOS 12
- Simulator app broken on iOS 12
- Simulator crashes as soon as app is open
- Simulator not working
- App crashes when opening on iPhone X
- Simulator crashes on iOS 12
- Simulator doesn't work
- App bombs on launch
- Lagging and not working properly
- Doesn't update as often
- US version installed on iPhone, needs German version

**Most requested features**

- Actual app to control and manage the pump
- App available in Canada/Europe
- Display beep noises for alerts
- Simulate real-world issues like occlusions
- Ability to simulate changing the pump
- Bolus from the app
- Option to change mmol/l to mg/dl
- Bluetooth control of the pump
- App to upload reports from the pump for iPad
- Integrate with Apple Watch for alerts
- Actual app that sends information to phone
- Simulate confirmation screens and alarms
- More realistic simulation of pump usage
- Display insulin on board information

## Recent user reviews (10 of 66)

All indexed reviews: https://appshunter.io/ios/app/tsimulator-app/id955568377/reviews.md

### 1/5 — Worst

*2026-03-03, version 6.7.6*

The worst it’s lagging with mine I tried  changing the pump and tried changing the cgm but it was not working properly so pls fix this problem

### 1/5 — Fundamentally flawed approach to insulin delivery

*2025-07-29*

The t:simulator does what is sets out to do: replicate the Tandem t:slim insulin pump. The problem is  that the pump’s algorithm is flawed. It assumes that basal insulin delivery is always required and perfectly matched to the body’s needs. Of course rates can be infinitely changed throughout the day and from day to day. The problem is that diabetes is not a constant. It has patterns, but varies from day to day. The pump’s algorithm assumes that the programmed basal rate.is always required and is therefore ignored when calculating the insulin on board. i.e. the active insulin in the body is ignored, even though a school boy could see that the amount of remaining active insulin is critical when determining the next food bolus. This results in completely unnecessary glucose highs and lows, yet the insulin on board information could easily be displayed. Tandem needs to pay attention to the experts by experience who could very easily guide them to make simple life changing improvements to their technology. But there is no way of feeding back customers’ dissatisfaction with their product. They are simply interested in selling their substandard product.

### 2/5 — Is it available in Canada

*2025-07-05*

Why tell all the diabetes that you can bolus from your phone if it’s not available in Canada???

### 5/5 — Pump app

*2024-11-24, version 6.5.5*

A simulator app to get familiar with the t:slim pump is great, but what everyone really wants is the app to control and manage the pump.

### 1/5 — Don’t care

*2024-08-08*

Where is the tandem app for Canada, if u don’t want to bring it here, fine at least tell us, and if that’s case, I want my money back so I can go to your competitors

### 4/5 — Needs updating

*2024-05-18*

Great app but needs to represent the current software capabilities so it is more useful for trainings.

**Developer response:** Thank you for your feedback and review! We are always looking for ways to improve the app and will be sure to log your comments for review by our App Developers.

### 5/5 — T-Connect app

*2024-03-31, version 6.5.3*

Hello, I already work with the Tandem pump and was wondering when the T-Connect app will be available for Belgium/Europe? Greetings Glenn

### 4/5 — Dear tandem

*2023-12-18*

I think it should have all the beep noises cause it tells the owner what noise it makes when you bolus or when it’s out of insulin and you need to fill the cartrige

**Developer response:** Thank you for sharing this with us. We will be sure to document your suggestion here with the appropriate team members for consideration.

### 5/5 — Usless

*2023-10-06*

I’m more than a year into my diabetes unless you make a feature like the practice that is actually your pump I’m only giving 5 stars so everyone will look at it

**Developer response:** We're always looking for ways to improve, so please feel free to share any feedback or suggestions you have for us directly at TandemCares@TandemDiabetes.com and we will be able to assist further.

### 2/5 — App

*2022-11-01*

Endlich bitte eine funktionierende App bringen und keine Simulation

## Frequently asked questions about t

### What does the t:simulator App do?

The t:simulator App allows users to explore the simple touchscreen interface of the t:slim X2 Insulin Pump. It provides a way to understand the pump's features without needing a prescription or insurance verification. This application is strictly for demonstration and educational purposes.

### Who is this app for?

This app is designed for individuals living with diabetes, their relatives or caregivers, and healthcare providers. It serves as an educational tool to familiarize users with the functionality of the t:slim X2 Insulin Pump's interface.

### Is this app free to use?

Yes, the t:simulator App is free to download and use. It does not require any payment, prescription, or insurance verification to access its features. The app is provided for demonstration purposes only.

### Can I use this app for actual diabetes therapy?

No, this application is strictly for demonstration and educational purposes only. It should NOT be used for therapy decisions. For actual diabetes management and therapy, please consult with your healthcare provider and use the official t:slim X2 Insulin Pump.

### Will the pump display be actual size on my device?

Due to the variety of screen sizes on compatible devices, the t:simulator App may not display the pump at its actual size. The actual size of the t:slim X2 Insulin Pump is 2” x 3.13”. For detailed specifications, please refer to the Technical Specifications in the Resources section within the app.

## Version history (last 5 releases)

### 6.7.9 — 2026-08-20

Overall app performance updates

### 6.7.8 — 2026-06-02

Overall app performance updates

### 6.7.7 — 2026-04-01

Overall app performance updates

### 6.7.6 — 2026-02-19

Overall app performance updates

### 6.7.5 — 2026-01-29

Overall app performance updates

## Apps similar to t

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [InPen Smart Pen](https://appshunter.io/ios/app/inpen-smart-pen/id1236236656) | 3.9 (184) | Free | Medical |
| [Glooko - Track Diabetes Data](https://appshunter.io/ios/app/glooko-track-diabetes-data/id471942748) | 4.7 (9,647) | Free | Medical |
| [BolusCalc](https://appshunter.io/ios/app/boluscalc/id1521364754) | 3.8 (23) | Free | Medical |
| [SugarPixel Hub](https://appshunter.io/ios/app/sugarpixel-hub/id1635792127) | 4.5 (102) | Free | Medical |
| [iLet App](https://appshunter.io/ios/app/ilet-app/id1553486890) | 4.3 (101) | Free | Medical |
| [ADA Standards of Care](https://appshunter.io/ios/app/ada-standards-of-care/id529516990) | 4.9 (1,473) | Free | Medical |

## More apps by Tandem Diabetes Care, Inc.

- [Sugarmate by Tandem](https://appshunter.io/ios/app/sugarmate-by-tandem/id1111093108)
- [Tandem t:slim Mobile App](https://appshunter.io/ios/app/tandem-tslim-mobile-app/id1455916023)
- [Tandem Mobi® mobile app](https://appshunter.io/ios/app/tandem-mobi-mobile-app/id6449297027)

All apps by Tandem Diabetes Care, Inc.: https://appshunter.io/developer/955568376

## Related topics

[tandem simulator](https://appshunter.io/ios/topics/tandem-simulator) · [tslim simulator](https://appshunter.io/ios/topics/tslim-simulator) · [tandem mobi simulator](https://appshunter.io/ios/topics/tandem-mobi-simulator) · [omnipod simulator](https://appshunter.io/ios/topics/omnipod-simulator) · [tslim](https://appshunter.io/ios/topics/tslim) · [tandem t slim](https://appshunter.io/ios/topics/tandem-t-slim) · [omnipod 5 simulator](https://appshunter.io/ios/topics/omnipod-5-simulator) · [tandem mobi](https://appshunter.io/ios/topics/tandem-mobi) · [t1d1 mobile](https://appshunter.io/ios/topics/t1d1-mobile) · [tandem diabetes](https://appshunter.io/ios/topics/tandem-diabetes) · [insulin pump](https://appshunter.io/ios/topics/insulin-pump)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*