# iCube Pro vs GSL Smart ESS

The clearest difference is price: GSL Smart ESS at Free against iCube Pro's $0.99. iCube Pro's advantage is update cadence (every 2 months vs every 9 months) and iOS requirement (12.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

GSL Smart ESS is free to download; iCube Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iCube Pro ships an update every 2 months, GSL Smart ESS every 9 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | iCube Pro | GSL Smart ESS |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/icube-pro/id735166317/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | Paid | — |
| Size | 8 MB | 37 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [佳敏 周](https://appshunter.io/developer/688163013) | [SHENZHEN GSL ENERGY CO LTD](https://appshunter.io/developer/1873857076) |

## What reviewers say

### iCube Pro

[App page](https://appshunter.io/ios/app/icube-pro/id735166317)

This utility app functions as a pocket timer for speedcubing, speedstacking, and Flying Cup challenges. It offers a straightforward and polished interface for timing your puzzle-solving or cup-stacking endeavors.

**Highlights:** Speedcubing timer, Speedstacking timer, Flying Cup timer, Pocket timer, Simple interface, Elegant design

**In-app purchases:** none


### GSL Smart ESS

[App page](https://appshunter.io/ios/app/gsl-smart-ess/id6504597237)

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

**In-app purchases:** none


## Frequently asked questions

### Is iCube Pro free?

iCube Pro costs $0.99, with no in-app purchases.

### Is GSL Smart ESS free?

GSL Smart ESS is free to download, with no in-app purchases.

### Do iCube Pro or GSL Smart ESS have ads?

Neither iCube Pro nor GSL Smart ESS shows ads.

### Which is updated more often, iCube Pro or GSL Smart ESS?

iCube Pro ships an update every 2 months, and GSL Smart ESS every 9 months. Most recently, iCube Pro was updated on November 1, 2026 and GSL Smart ESS on November 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.*