# Kasookoo vs Ublux

The clearest difference is rating: Ublux at 5.0 against Kasookoo's 4.3. Kasookoo's advantage is ratings volume (7 vs 1). 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.

Ublux holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Kasookoo has 7 ratings behind it against 1, so its average is the more settled of the two.

Kasookoo ships an update every 6 months, Ublux every 7 months. The most recent releases landed on September 15, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Kasookoo | Ublux |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (7 ratings)](https://appshunter.io/ios/app/kasookoo/id1451964697/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ublux/id6467048472/reviews)** |
| Number of ratings | **7** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 7 months |
| Monetization | Free | Free |
| Size | 36 MB | 116 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Yuave Ltd](https://appshunter.io/developer/1049031932) | [Ublux](https://appshunter.io/developer/1708098836) |

## What reviewers say

### Kasookoo

[App page](https://appshunter.io/ios/app/kasookoo/id1451964697)

This business phone system app liberates users from traditional phone line costs and constraints. It offers features like a virtual receptionist, conference calling, and call tagging directly on a smartphone.

**Highlights:** Virtual receptionist, Conference calling, Call tagging, Customizable caller ID

**In-app purchases:** none


### Ublux

[App page](https://appshunter.io/ios/app/ublux/id6467048472)

This app provides a VOIP calling solution for seamless international communication. It offers free app-to-app calls with high-definition quality and secure discussions. Access international numbers from 160 countries with 24/7 security and data encryption.

**Highlights:** International calling from 160 countries, Free app-to-app calls, High-definition call quality, Secure discussions with data encryption, Seamless integration with tools, Scalable call volume

**In-app purchases:** none


## Frequently asked questions

### Is Kasookoo free?

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

### Is Ublux free?

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

### Which has better reviews, Kasookoo or Ublux?

Ublux is rated higher. Kasookoo averages 4.3 out of 5 from 7 ratings, while Ublux averages 5.0 from 1 ratings.

### Do Kasookoo or Ublux have ads?

Neither Kasookoo nor Ublux shows ads.

### Which is updated more often, Kasookoo or Ublux?

Kasookoo ships an update every 6 months, and Ublux every 7 months. Most recently, Kasookoo was updated on September 15, 2026 and Ublux on September 23, 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.*