# iSOLID vs Vocal Coach

The clearest difference is in-app purchases: iSOLID at none against Vocal Coach's 3. iSOLID also leads on update cadence (every 4 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Vocal Coach sells 3 in-app purchases, starting at $3.99 per 7 days. iSOLID asks for nothing beyond the download.

iSOLID ships an update every 4 days, Vocal Coach fortnightly. The most recent releases landed on September 13, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | iSOLID | Vocal Coach |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Size | 19 MB | 18 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nikolai Borisov](https://appshunter.io/developer/1838085350) | [Alexis Raimbault](https://appshunter.io/developer/1695318313) |

## What reviewers say

### iSOLID

[App page](https://appshunter.io/ios/app/isolid-learn-programming/id6752113008)

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

**In-app purchases:** none


### Vocal Coach

[App page](https://appshunter.io/ios/app/vocal-coach-speaking-trainer/id6758733651)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vocal Coach Pro Weekly | $3.99 | per 7 days |
| Vocal Coach Pro Monthly | $7.99 | per month |
| Vocal Coach Pro Yearly | $34.99 | per year |


## Frequently asked questions

### Is iSOLID free?

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

### Is Vocal Coach free?

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

### Do iSOLID or Vocal Coach have ads?

Neither iSOLID nor Vocal Coach shows ads.

### Which is updated more often, iSOLID or Vocal Coach?

iSOLID ships an update every 4 days, and Vocal Coach fortnightly. Most recently, iSOLID was updated on September 13, 2026 and Vocal Coach on September 10, 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.*