# Acaville vs STEM

The clearest difference is in-app purchases: Acaville at none against STEM's 3. STEM's advantage is update cadence (every 9 days vs every 37 months) and iOS requirement (16.4 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. STEM sells 3 in-app purchases, starting at $7.99 per month. Acaville asks for nothing beyond the download.

Acaville ships an update every 37 months, STEM every 9 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Acaville | STEM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/acaville/id666071117/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 16 MB | 3 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Chord Innovations](https://appshunter.io/developer/437854068) | [CEM OZAN DUZENCI](https://appshunter.io/developer/6782101402) |

## What reviewers say

### Acaville

[App page](https://appshunter.io/ios/app/acaville/id666071117)

Stream contemporary a cappella music, interviews, and tips 24/7. Access podcasts and read blog content related to the a cappella community. This app is a dedicated hub for all things a cappella.

**Highlights:** 24/7 a cappella music streaming, Listen to a cappella podcasts, Read a cappella blog content, Interviews and tips, Dedicated a cappella community hub

**Features:** Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases:** none


### STEM

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

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Monthly | $7.99 | per month |
| Basic Plan | $12.99 | per month |
| Pro Plan | $24.99 | per month |


## Frequently asked questions

### Is Acaville free?

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

### Is STEM free?

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

### Do Acaville or STEM have ads?

Neither Acaville nor STEM shows ads.

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

Acaville ships an update every 37 months, and STEM every 9 days. Most recently, Acaville was updated on November 6, 2026 and STEM on October 31, 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.*