# Kerk vs LUMISTAR

The clearest difference is update cadence: LUMISTAR at every 6 weeks against Kerk's every 10 months. Kerk's advantage is iOS requirement (5.1.1 vs 15.6). 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.

Kerk ships an update every 10 months, LUMISTAR every 6 weeks. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Kerk | LUMISTAR |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 75 MB | 164 MB |
| Requires iOS | **5.1.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Kerk Comercial](https://appshunter.io/developer/1327483304) | [皓翊星辰(上海)机器人科技有限责任公司](https://appshunter.io/developer/1880017018) |

## What reviewers say

### Kerk

[App page](https://appshunter.io/ios/app/kerk/id927044338)

**Features:** macOS Compatibility

**In-app purchases:** none


### LUMISTAR

[App page](https://appshunter.io/ios/app/lumistar/id6759644286)

Enhance your training with a smart ball machine companion app. Connect to your device, access structured training modes, and view data-driven reports to track your progress and improve performance.

**Highlights:** Connect and control smart ball machines, Access structured training modes, Generate data-driven training reports, Track progress and improve performance, Receive OTA updates for enhancements

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Kerk free?

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

### Is LUMISTAR free?

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

### Do Kerk or LUMISTAR have ads?

Neither Kerk nor LUMISTAR shows ads.

### Which is updated more often, Kerk or LUMISTAR?

Kerk ships an update every 10 months, and LUMISTAR every 6 weeks. Most recently, Kerk was updated on October 7, 2026 and LUMISTAR on October 4, 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.*