# HaiLun弹唱 vs Sight Reading

The clearest difference is in-app purchases: HaiLun弹唱 at none against Sight Reading's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Sight Reading sells 2 in-app purchases, starting at $1.99 per 7 days. HaiLun弹唱 asks for nothing beyond the download.

HaiLun弹唱 ships an update fortnightly, Sight Reading every 2 weeks. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | HaiLun弹唱 | Sight Reading |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 58 MB | 56 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [HAILUN PIANO CO., LTD.](https://appshunter.io/developer/1104870330) | [凯 张](https://appshunter.io/developer/1879659677) |

## What reviewers say

### HaiLun弹唱

[App page](https://appshunter.io/ios/app/hailun/id6743887761)

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

**In-app purchases:** none


### Sight Reading

[App page](https://appshunter.io/ios/app/sight-reading-piano-notes/id6799955253)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Piano Learn: Sight Reading | $1.99 | per 7 days |
| Piano Learn: Sight Reading | $9.99 | one-time |


## Frequently asked questions

### Is HaiLun弹唱 free?

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

### Is Sight Reading free?

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

### Do HaiLun弹唱 or Sight Reading have ads?

Neither HaiLun弹唱 nor Sight Reading shows ads.

### Which is updated more often, HaiLun弹唱 or Sight Reading?

HaiLun弹唱 ships an update fortnightly, and Sight Reading every 2 weeks. Most recently, HaiLun弹唱 was updated on October 28, 2026 and Sight Reading on October 29, 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.*