# Spectrum(趣识谱) vs 练琴宝

The clearest difference is in-app purchases: Spectrum(趣识谱) at none against 练琴宝's 3. Spectrum(趣识谱) also leads on iOS requirement (11.0 vs 18.5). On price, ads and device support there is nothing between them.

Both are free to download. 练琴宝 sells 3 in-app purchases, starting at $0.99 per month. Spectrum(趣识谱) asks for nothing beyond the download.

## The numbers

| Metric | Spectrum(趣识谱) | 练琴宝 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 days |
| Size | 46 MB | 42 MB |
| Requires iOS | **11.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [ChengDu Pengta Network Technology Co.Ltd](https://appshunter.io/developer/1269440615) | [贺 史](https://appshunter.io/developer/1775818765) |

## What reviewers say

### Spectrum(趣识谱)

[App page](https://appshunter.io/ios/app/spectrum/id6444767986)

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

**In-app purchases:** none


### 练琴宝

[App page](https://appshunter.io/ios/app/id6755047033)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 练琴宝Pro 月会员 | $0.99 | per month |
| 练琴宝Pro 年会员 | $9.99 | per year |
| 练琴宝Pro 永久会员 | $14.99 | one-time |


## Frequently asked questions

### Is Spectrum(趣识谱) free?

Spectrum(趣识谱) is free to download, with no in-app purchases.

### Is 练琴宝 free?

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

### Do Spectrum(趣识谱) or 练琴宝 have ads?

Neither Spectrum(趣识谱) nor 练琴宝 shows ads.

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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.*