# t vs iSage Rx

The clearest difference is rating: iSage Rx at 4.8 against t's 3.6. t's advantage is ratings volume (116 vs 15) and device support (3 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

iSage Rx holds the better App Store score, 4.8 against 3.6. That said, the two scores are not equally well evidenced: t has 116 ratings behind it against 15, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 13, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | t | iSage Rx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (116 ratings)](https://appshunter.io/ios/app/tsimulator-app/id955568377/reviews) | **[4.8 (15 ratings)](https://appshunter.io/ios/app/isage-rx/id1227770880/reviews)** |
| Number of ratings | **116** | 15 |
| Positive reviews | 42.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 31 MB | 35 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Tandem Diabetes Care, Inc.](https://appshunter.io/developer/955568376) | [Amalgam Rx, Inc.](https://appshunter.io/developer/1227770879) |

## What reviewers say

### t

[App page](https://appshunter.io/ios/app/tsimulator-app/id955568377)

Explore the features of an insulin pump's touchscreen interface without needing a prescription. This app is ideal for individuals with diabetes, their caregivers, or healthcare professionals to understand pump functionality.

**Highlights:** Explore touchscreen interface, Demonstrates pump features, No prescription required, Educational tool, Mobile device compatible

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 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

**What reviewers complain about**

- 🐛 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

**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

**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


### iSage Rx

[App page](https://appshunter.io/ios/app/isage-rx/id1227770880)

This app assists individuals with type 2 diabetes in managing their basal insulin therapy. It helps users track blood sugar levels, receive recommended insulin doses, and adhere to their prescribed treatment plan in collaboration with their healthcare provider.

**Highlights:** Basal insulin titration guidance, Blood sugar level tracking, Recommended insulin dosage, Dose adjustment reminders, Healthcare provider monitoring, Type 2 diabetes management

**In-app purchases:** none


## Frequently asked questions

### Is t free?

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

### Is iSage Rx free?

iSage Rx is free to download, with no in-app purchases.

### Which has better reviews, t or iSage Rx?

iSage Rx is rated higher. t averages 3.6 out of 5 from 116 ratings, while iSage Rx averages 4.8 from 15 ratings.

### Do t or iSage Rx have ads?

Neither t nor iSage Rx shows ads.

### Which is updated more often, t or iSage Rx?

t ships an update every 2 months, and iSage Rx every 2 months. Most recently, t was updated on October 13, 2026 and iSage Rx on September 22, 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.*