# STEM vs iSimpleLoop

The clearest difference is in-app purchases: iSimpleLoop at none against STEM's 6. iSimpleLoop also leads on update cadence (every 3 days vs every 9 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. STEM sells 6 in-app purchases, starting at $7.99 per month. iSimpleLoop asks for nothing beyond the download.

STEM ships an update every 9 days, iSimpleLoop every 3 days. The most recent releases landed on October 25, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | STEM | iSimpleLoop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/isimpleloop/id6813529643/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Monetization | — | Free |
| Size | 3 MB | 6 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) | [Artem Kolchin](https://appshunter.io/developer/1838950253) |

## 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 |


### iSimpleLoop

[App page](https://appshunter.io/ios/app/isimpleloop/id6813529643)

Record and layer multiple audio tracks to create songs. Features built-in instruments like guitar, keys, and pads, along with editing tools and effects. Export your creations as audio or MIDI files.

**Highlights:** Multi-track recording, Built-in guitar, keys, and pads, Audio and MIDI export, Song arrangement and editing, Effects and EQ, Lyrics and note editor

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

**In-app purchases:** none


## Frequently asked questions

### Is STEM free?

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

### Is iSimpleLoop free?

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

### Do STEM or iSimpleLoop have ads?

Neither STEM nor iSimpleLoop shows ads.

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

STEM ships an update every 9 days, and iSimpleLoop every 3 days. Most recently, STEM was updated on October 25, 2026 and iSimpleLoop on October 13, 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.*