# Sine vs Corvyn

The clearest difference is chart position: Sine at #135 against Corvyn's unranked. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Sine sells 4 in-app purchases, starting at $1.99 per month and Corvyn sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 days. Both last shipped on November 10, 2026.

## The numbers

| Metric | Sine | Corvyn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (813 ratings)](https://appshunter.io/ios/app/sine-ear-training-games/id6809608874/reviews)** | — |
| Number of ratings | **813** | — |
| Positive reviews | 94.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Monetization | Freemium | — |
| Best chart rank | **#135** | — |
| Size | 200 MB | 15 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ethan Liao](https://appshunter.io/developer/6809608877) | [Zoltan Berki](https://appshunter.io/developer/6816500437) |

## What reviewers say

### Sine

[App page](https://appshunter.io/ios/app/sine-ear-training-games/id6809608874)

**Currently charting:** #135 Top Free · Education (US App Store)

Master music theory and ear training with interactive lessons and games. Progress from basic concepts to advanced mastery, with personalized practice based on your performance. Features include rhythm, harmony, sight-reading, and perfect pitch training.

**Highlights:** Music theory courses, Ear training for notes and chords, Perfect and relative pitch training, Rhythm and sight-reading games, Personalized practice stats, Weekly ear tests, Social progress tracking

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Encore Monthly | $1.99 | per month |
| Encore Yearly | $14.99 | per year |
| Encore Family | $24.99 | per year |
| Encore Lifetime | $29.99 | one-time |


### Corvyn

[App page](https://appshunter.io/ios/app/corvyn/id6816500435)

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Silver | $2.99 | per month |
| Gold | $4.99 | per month |
| Bronze | $4.99 | one-time |


## Frequently asked questions

### Is Sine free?

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

### Is Corvyn free?

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

### Do Sine or Corvyn have ads?

Neither Sine nor Corvyn shows ads.

### Which is updated more often, Sine or Corvyn?

Sine ships an update every 2 days, and Corvyn every 2 days. Most recently, Sine was updated on November 10, 2026 and Corvyn on November 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.*