# iStem vs J.J.Moon AUv3 Plugin

iStem and J.J.Moon AUv3 Plugin are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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. iStem sells 1 one-off in-app purchase and J.J.Moon AUv3 Plugin sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | iStem | J.J.Moon AUv3 Plugin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/jjmoon-auv3-plugin/id6813232689/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 79 MB | 8 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [Jan Maes](https://appshunter.io/developer/1550506252) | [Petar Gerov](https://appshunter.io/developer/1889588782) |

## What reviewers say

### iStem

[App page](https://appshunter.io/ios/app/istem/id6793296941)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iStem Activation | $4.99 | one-time |


### J.J.Moon AUv3 Plugin

[App page](https://appshunter.io/ios/app/jjmoon-auv3-plugin/id6813232689)

Enhance your acoustic guitar sound with this AUv3 plugin. It offers detailed control over body, air, and string tones, plus compression, stereo width, and spatial effects. Try it free for seven days before a one-time purchase unlocks all features permanently.

**Highlights:** Acoustic guitar curve engine, Multi-band EQ shaping, Optical compressor, Stereo micro-pitch widening, Short stereo double and room bloom, Fifteen factory presets, Customizable panel finishes

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| jj-moon Unlock | $2.99 | one-time |


## Frequently asked questions

### Is iStem free?

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

### Is J.J.Moon AUv3 Plugin free?

J.J.Moon AUv3 Plugin is free to download, with in-app purchases available.

### Do iStem or J.J.Moon AUv3 Plugin have ads?

Neither iStem nor J.J.Moon AUv3 Plugin shows ads.

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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.*