# IST Quiz App vs CGMSIM

The clearest difference is update cadence: CGMSIM at every 2 months against IST Quiz App's every 12 months. IST Quiz App's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

IST Quiz App ships an update every 12 months, CGMSIM every 2 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | IST Quiz App | CGMSIM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/cgmsim/id1667105182/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 22 MB | 43 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Patricia Pauli](https://appshunter.io/developer/1587769862) | [Lorenzo Sandini](https://appshunter.io/developer/1667105184) |

## What reviewers say

### IST Quiz App

[App page](https://appshunter.io/ios/app/ist-quiz-app/id1491663052)

**Features:** macOS Compatibility

**In-app purchases:** none


### CGMSIM

[App page](https://appshunter.io/ios/app/cgmsim/id1667105182)

Simulate managing Type 1 Diabetes by administering meals and insulin. Maintain target blood glucose levels while minimizing lows and highs. Integrate activity data for a realistic experience.

**Highlights:** Virtual Type 1 Diabetes subject management, Meal and insulin administration (MDI/CSII), Glycemic target range maintenance, Hypo/hyperglycemia alerts, Activity tracker integration (Fitbit, Google Fit), Nightscout CGM trace display, Success report generation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IST Quiz App free?

IST Quiz App is free to download, with no in-app purchases.

### Is CGMSIM free?

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

### Do IST Quiz App or CGMSIM have ads?

Neither IST Quiz App nor CGMSIM shows ads.

### Which is updated more often, IST Quiz App or CGMSIM?

IST Quiz App ships an update every 12 months, and CGMSIM every 2 months. Most recently, IST Quiz App was updated on October 25, 2026 and CGMSIM on October 24, 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.*