# Knowlens vs Chinese VB+

The clearest difference is in-app purchases: Knowlens at none against Chinese VB+'s 1. Knowlens also leads on update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Chinese VB+ sells 1 one-off in-app purchase. Knowlens asks for nothing beyond the download.

Knowlens ships an update every 3 weeks, Chinese VB+ every 2 months. The most recent releases landed on September 12, 2026 and May 18, 2026 respectively.

## The numbers

| Metric | Knowlens | Chinese VB+ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 41 MB | 168 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Knowlens Solutions Pvt Ltd](https://appshunter.io/developer/1384378954) | [David Oosthuizen](https://appshunter.io/developer/1709796384) |

## What reviewers say

### Knowlens

[App page](https://appshunter.io/ios/app/knowlens/id1445002674)

**Features:** Vision Pro support

**In-app purchases:** none


### Chinese VB+

[App page](https://appshunter.io/ios/app/chinese-vb-plus/id6468363341)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| all topics package | $5.99 | one-time |


## Frequently asked questions

### Is Knowlens free?

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

### Is Chinese VB+ free?

Chinese VB+ is free to download, with in-app purchases available.

### Do Knowlens or Chinese VB+ have ads?

Neither Knowlens nor Chinese VB+ shows ads.

### Which is updated more often, Knowlens or Chinese VB+?

Knowlens ships an update every 3 weeks, and Chinese VB+ every 2 months. Most recently, Knowlens was updated on September 12, 2026 and Chinese VB+ on May 18, 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.*