# STEM vs Wormhole

STEM and Wormhole are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. STEM sells 6 in-app purchases, starting at $7.99 per month and Wormhole sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

STEM ships an update every 9 days, Wormhole every 6 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | STEM | Wormhole |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 6 days** |
| Size | 3 MB | 22 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CEM OZAN DUZENCI](https://appshunter.io/developer/6782101402) | [Moritz Maximilian Fricke](https://appshunter.io/developer/1860644274) |

## What reviewers say

### STEM

[App page](https://appshunter.io/ios/app/stem-x-vocal-isolation/id6791375004)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Monthly | $7.99 | per month |
| Basic Plan | $12.99 | per month |
| Pro Plan | $24.99 | per month |
| Basic Plan | $99.99 | per year |
| Pro Plan | $199.99 | per year |
| Energy Token | $4.99 | one-time |


### Wormhole

[App page](https://appshunter.io/ios/app/wormhole-sample-and-beat-maker/id6796587216)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Wormhole Pro Monthly | $6.99 | per month |
| Wormhole Pro Yearly | $44.99 | per year |


## Frequently asked questions

### Is STEM free?

STEM is free to download, with in-app purchases available.

### Is Wormhole free?

Wormhole is free to download, with in-app purchases available.

### Do STEM or Wormhole have ads?

Neither STEM nor Wormhole shows ads.

### Which is updated more often, STEM or Wormhole?

STEM ships an update every 9 days, and Wormhole every 6 days. Most recently, STEM was updated on October 25, 2026 and Wormhole on October 25, 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.*