# POWERCUBE vs CHALLNA

The clearest difference is update cadence: CHALLNA at every 2 weeks against POWERCUBE's every 5 weeks. POWERCUBE's advantage is iOS requirement (13.0 vs 16.6). 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.

POWERCUBE ships an update every 5 weeks, CHALLNA every 2 weeks. Both last shipped on October 12, 2026.

## The numbers

| Metric | POWERCUBE | CHALLNA |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 67 MB | 38 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Loncin Motor Co., Ltd.](https://appshunter.io/developer/828796872) | [RYNYUL](https://appshunter.io/developer/580531175) |

## What reviewers say

### POWERCUBE

[App page](https://appshunter.io/ios/app/powercube-pv-storage/id6476087705)

**In-app purchases:** none


### CHALLNA

[App page](https://appshunter.io/ios/app/challna-precise-server-clock/id6759583731)

This app helps you achieve precise timing for critical online events by displaying accurate server time, accounting for network latency. It offers one-touch presets for popular sites, countdown timers, and practice modes to improve your reaction speed for ticket sales, course registrations, and limited drops.

**Highlights:** Millisecond precision synchronization, One-touch server presets, Intuitive countdown timers, Click practice mode, Smart reminders and schedule registration, Direct site access, Dynamic Island support

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

**In-app purchases:** none


## Frequently asked questions

### Is POWERCUBE free?

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

### Is CHALLNA free?

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

### Do POWERCUBE or CHALLNA have ads?

Neither POWERCUBE nor CHALLNA shows ads.

### Which is updated more often, POWERCUBE or CHALLNA?

POWERCUBE ships an update every 5 weeks, and CHALLNA every 2 weeks. Most recently, POWERCUBE was updated on October 12, 2026 and CHALLNA on October 12, 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.*