# KZJ vs VOLDA

The clearest difference is update cadence: VOLDA at every 2 weeks against KZJ's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

KZJ ships an update every 6 weeks, VOLDA every 2 weeks. The most recent releases landed on September 19, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | KZJ | VOLDA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Size | 65 MB | 36 MB |
| Requires iOS | **12.4** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Zhongshan Kangzhijie Electrical Appliances Co., Ltd.](https://appshunter.io/developer/1798975427) | [颖卓 赵](https://appshunter.io/developer/1865325974) |

## What reviewers say

### KZJ

[App page](https://appshunter.io/ios/app/kzj/id6742648445)

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

**In-app purchases:** none


### VOLDA

[App page](https://appshunter.io/ios/app/volda/id6758033773)

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

**In-app purchases:** none


## Frequently asked questions

### Is KZJ free?

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

### Is VOLDA free?

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

### Do KZJ or VOLDA have ads?

Neither KZJ nor VOLDA shows ads.

### Which is updated more often, KZJ or VOLDA?

KZJ ships an update every 6 weeks, and VOLDA every 2 weeks. Most recently, KZJ was updated on September 19, 2026 and VOLDA on September 13, 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.*