# Gliss vs Intervalia

The clearest difference is in-app purchases: Gliss at none against Intervalia's 3. Intervalia's advantage is update cadence (every 3 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Intervalia sells 3 one-off in-app purchases. Gliss asks for nothing beyond the download.

Gliss ships an update weekly, Intervalia every 3 days. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Gliss | Intervalia |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Size | 2 MB | 4 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sean Wiseman](https://appshunter.io/developer/1555329260) | [Kostya Blokhin](https://appshunter.io/developer/829724783) |

## What reviewers say

### Gliss

[App page](https://appshunter.io/ios/app/gliss-notation-trainer/id6444380942)

**Features:** macOS Compatibility

**In-app purchases:** none


### Intervalia

[App page](https://appshunter.io/ios/app/intervalia-ear-training/id6816402990)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small thanks | $0.99 | one-time |
| Thanks | $2.99 | one-time |
| Big thanks | $4.99 | one-time |


## Frequently asked questions

### Is Gliss free?

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

### Is Intervalia free?

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

### Do Gliss or Intervalia have ads?

Neither Gliss nor Intervalia shows ads.

### Which is updated more often, Gliss or Intervalia?

Gliss ships an update weekly, and Intervalia every 3 days. Most recently, Gliss was updated on November 3, 2026 and Intervalia on October 25, 2026.

---

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