# STEMulator vs SciQuiz Premium

The clearest difference is price: STEMulator at Free against SciQuiz Premium's $0.99. SciQuiz Premium's advantage is update cadence (every 3 months vs every 9 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

STEMulator is free to download; SciQuiz Premium costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

STEMulator ships an update every 9 months, SciQuiz Premium every 3 months. The most recent releases landed on October 5, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | STEMulator | SciQuiz Premium |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 months** |
| Size | 35 MB | 293 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [STEMulator](https://appshunter.io/developer/1760697221) | [Jianfeng Wu](https://appshunter.io/developer/1435210283) |

## What reviewers say

### STEMulator

[App page](https://appshunter.io/ios/app/stemulator/id6599522008)

**Features:** macOS Compatibility

**In-app purchases:** none


### SciQuiz Premium

[App page](https://appshunter.io/ios/app/sciquiz-premium/id6751562075)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is STEMulator free?

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

### Is SciQuiz Premium free?

SciQuiz Premium costs $0.99, with no in-app purchases.

### Do STEMulator or SciQuiz Premium have ads?

Neither STEMulator nor SciQuiz Premium shows ads.

### Which is updated more often, STEMulator or SciQuiz Premium?

STEMulator ships an update every 9 months, and SciQuiz Premium every 3 months. Most recently, STEMulator was updated on October 5, 2026 and SciQuiz Premium on September 23, 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.*