# EMwaveRT vs STEMulator

The clearest difference is iOS requirement: EMwaveRT at 11.0 against STEMulator's 15.1. 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.

EMwaveRT ships an update every 5 months, STEMulator every 9 months. The most recent releases landed on May 16, 2026 and May 19, 2026 respectively.

## The numbers

| Metric | EMwaveRT | STEMulator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 9 months |
| Size | 1 MB | 35 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Eng Tan](https://appshunter.io/developer/1025260544) | [STEMulator](https://appshunter.io/developer/1760697221) |

## What reviewers say

### EMwaveRT

[App page](https://appshunter.io/ios/app/emwavert/id1387286837)

**Features:** macOS Compatibility

**In-app purchases:** none


### STEMulator

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EMwaveRT free?

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

### Is STEMulator free?

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

### Do EMwaveRT or STEMulator have ads?

Neither EMwaveRT nor STEMulator shows ads.

### Which is updated more often, EMwaveRT or STEMulator?

EMwaveRT ships an update every 5 months, and STEMulator every 9 months. Most recently, EMwaveRT was updated on May 16, 2026 and STEMulator on May 19, 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.*