# iJammer vs Stemulator

The clearest difference is in-app purchases: iJammer at none against Stemulator's 8. iJammer also leads on rating (5.0 vs 4.7). Stemulator's advantage is ads (none vs shown) and update cadence (every 9 days vs every 78 months). On price, ratings volume, device support and iOS requirement there is nothing between them.

Both are free to download. Stemulator sells 8 in-app purchases, starting at $4.99 per month. iJammer asks for nothing beyond the download.

iJammer holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 9 and 14 respectively.

iJammer ships an update every 78 months, Stemulator every 9 days. The most recent releases landed on October 2, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | iJammer | Stemulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/ijammer/id1500974138/reviews)** | [4.7 (14 ratings)](https://appshunter.io/ios/app/stemulator/id6757211000/reviews) |
| Number of ratings | 9 | **14** |
| Positive reviews | — | 94.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 78 months | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 13 MB | 60 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Callaloo Records LLC](https://appshunter.io/developer/1496870594) | [Stemulator LLC](https://appshunter.io/developer/1865353381) |

## What reviewers say

### iJammer

[App page](https://appshunter.io/ios/app/ijammer/id1500974138)

This app uses device motion to create music and sound effects. Simply activate the feature, move your device, and hear sounds play. It offers various settings for balance practice, virtual juggling, and creative jamming.

**Highlights:** Motion-activated audio, Soundboard with 90+ sounds, Balance and coordination modes, Creative music jamming, Play while standing or sitting

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

**In-app purchases:** none


### Stemulator

[App page](https://appshunter.io/ios/app/stemulator/id6757211000)

This app uses advanced audio separation models to extract individual elements from any song with studio-quality precision. It offers modes for producers to download stems and for musicians to play along with real-time mixing and chord mapping.

**Highlights:** Extract up to 18 stems per track, Producers Mode for stem downloads, Musicians Mode for real-time mixing, Generate MIDI chord maps, Real-time chord mapping and waterfall MIDI piano, Supports major audio formats for import and export

**Features:** Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Professional | $4.99 | per month |
| Studio | $9.99 | per month |
| Audiophile | $19.99 | per month |
| Production | $29.99 | per month |
| Professional (Annual) | $39.00 | per year |
| Studio (Annual) | $79.00 | per year |
| Audiophile (Annual) | $149.00 | per year |
| Production (Annual) | $249.00 | per year |


## Frequently asked questions

### Is iJammer free?

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

### Is Stemulator free?

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

### Which has better reviews, iJammer or Stemulator?

iJammer is rated higher. iJammer averages 5.0 out of 5 from 9 ratings, while Stemulator averages 4.7 from 14 ratings.

### Do iJammer or Stemulator have ads?

iJammer shows ads; Stemulator does not.

### Which is updated more often, iJammer or Stemulator?

iJammer ships an update every 78 months, and Stemulator every 9 days. Most recently, iJammer was updated on October 2, 2026 and Stemulator on October 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*