# ExtraPool vs CGT Alkor

The clearest difference is iOS requirement: ExtraPool at 12.0 against CGT Alkor's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 weeks. Both last shipped on June 4, 2026.

## The numbers

| Metric | ExtraPool | CGT Alkor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cgt-alkor/id6670165961/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free | Free |
| Size | 371 MB | 39 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [QSC](https://appshunter.io/developer/1291352938) | [CGT ALKOR DRAKA](https://appshunter.io/developer/1765104103) |

## What reviewers say

### ExtraPool

[App page](https://appshunter.io/ios/app/extrapool/id1414857310)

This app streamlines the process for pool builders to measure and order custom liners. It allows for manual or Bluetooth-enabled measurements, generating a professional order document that reduces errors and saves time for manufacturers and clients.

**Highlights:** Manual liner measurement input, Bluetooth-enabled measurement with compatible devices, Automated order document generation, Measurement validation against manufacturer standards, Time-saving for pool construction teams, Reduces manual data entry errors

**Features:** macOS Compatibility

**In-app purchases:** none


### CGT Alkor

[App page](https://appshunter.io/ios/app/cgt-alkor/id6670165961)

Explore a catalog of pool membranes, configure custom pool projects with various ambiances and product selections, and access a professional area for training videos, technical sheets, and brand information.

**Highlights:** Browse product catalog, Configure pool projects, Select ambiances and beaches, Access professional training, View technical sheets, Brand information

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ExtraPool free?

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

### Is CGT Alkor free?

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

### Do ExtraPool or CGT Alkor have ads?

Neither ExtraPool nor CGT Alkor shows ads.

### Which is updated more often, ExtraPool or CGT Alkor?

ExtraPool ships an update every 2 weeks, and CGT Alkor every 2 weeks. Most recently, ExtraPool was updated on June 4, 2026 and CGT Alkor on June 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*