# Duochang vs 知数乐园

The clearest difference is price: Duochang at Free against 知数乐园's $0.99. Duochang also leads on in-app purchases (none vs 2) and ads (none vs shown). 知数乐园's advantage is update cadence (every 5 days vs every 3 months). On device support and iOS requirement there is nothing between them.

Duochang is free to download; 知数乐园 costs $0.99 up front. 知数乐园 sells 2 in-app purchases, starting at $0.99 per 7 days. Duochang asks for nothing beyond the download.

Duochang ships an update every 3 months, 知数乐园 every 5 days. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Duochang | 知数乐园 |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[2.3 (6 ratings)](https://appshunter.io/ios/app/duochang/id1481190850/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 50 MB | 401 MB |
| Requires iOS | **10.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fujian Star-net eVideo Information Systems Co.,Ltd.](https://appshunter.io/developer/462036507) | [Yang Zhou](https://appshunter.io/developer/1740236218) |

## What reviewers say

### Duochang

[App page](https://appshunter.io/ios/app/duochang/id1481190850)

This app simplifies singing by allowing easy searching of songs by artist, title, or playlist. Users can control playback, volume, and song selection directly from their device, making the karaoke experience more convenient.

**Highlights:** Search by singer, song title, or playlist, Convenient song selection, Playback controls (pause, play, skip), Volume adjustment, Simple operation

**Features:** macOS Compatibility

**In-app purchases:** none


### 知数乐园

[App page](https://appshunter.io/ios/app/id1601386038)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 知数乐园每周计划 | $0.99 | per 7 days |
| 知数乐园每年计划 | $34.99 | per year |


## Frequently asked questions

### Is Duochang free?

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

### Is 知数乐园 free?

知数乐园 costs $0.99, and also offers in-app purchases.

### Do Duochang or 知数乐园 have ads?

知数乐园 shows ads; Duochang does not.

### Which is updated more often, Duochang or 知数乐园?

Duochang ships an update every 3 months, and 知数乐园 every 5 days. Most recently, Duochang was updated on November 3, 2026 and 知数乐园 on November 7, 2026.

---

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