# 央音海伦智能课堂 vs iTheory ‑ ABRSM Exam Guide

The clearest difference is update cadence: iTheory ‑ ABRSM Exam Guide at every 9 days against 央音海伦智能课堂's every 2 months. iTheory ‑ ABRSM Exam Guide also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

央音海伦智能课堂 ships an update every 2 months, iTheory ‑ ABRSM Exam Guide every 9 days. The most recent releases landed on September 10, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 央音海伦智能课堂 | iTheory ‑ ABRSM Exam Guide |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Size | 2.5 GB | 122 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HAILUN PIANO CO., LTD.](https://appshunter.io/developer/1104870330) | [颖 巫](https://appshunter.io/developer/515330826) |

## What reviewers say

### 央音海伦智能课堂

[App page](https://appshunter.io/ios/app/id1467155773)

**Features:** macOS Compatibility

**In-app purchases:** none


### iTheory ‑ ABRSM Exam Guide

[App page](https://appshunter.io/ios/app/itheory-abrsm-exam-guide/id6776988802)

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

**In-app purchases:** none


## Frequently asked questions

### Is 央音海伦智能课堂 free?

央音海伦智能课堂 is free to download, with no in-app purchases.

### Is iTheory ‑ ABRSM Exam Guide free?

iTheory ‑ ABRSM Exam Guide is free to download, with no in-app purchases.

### Do 央音海伦智能课堂 or iTheory ‑ ABRSM Exam Guide have ads?

Neither 央音海伦智能课堂 nor iTheory ‑ ABRSM Exam Guide shows ads.

### Which is updated more often, 央音海伦智能课堂 or iTheory ‑ ABRSM Exam Guide?

央音海伦智能课堂 ships an update every 2 months, and iTheory ‑ ABRSM Exam Guide every 9 days. Most recently, 央音海伦智能课堂 was updated on September 10, 2026 and iTheory ‑ ABRSM Exam Guide on September 20, 2026.

---

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