# KruBoss Boxing Timer vs SelfDefenseLiveZ

The clearest difference is ratings volume: KruBoss Boxing Timer at 25 against SelfDefenseLiveZ's 1. On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.9 for KruBoss Boxing Timer against 5.0 for SelfDefenseLiveZ. That said, the two scores are not equally well evidenced: KruBoss Boxing Timer has 25 ratings behind it against 1, so its average is the more settled of the two.

KruBoss Boxing Timer ships an update every 3 months, SelfDefenseLiveZ every 2 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | KruBoss Boxing Timer | SelfDefenseLiveZ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (25 ratings)](https://appshunter.io/ios/app/kruboss-boxing-timer/id1338791547/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/selfdefenselivez/id6502416160/reviews)** |
| Number of ratings | **25** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 78 MB | 26 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Globules Interactive Limited](https://appshunter.io/developer/978694053) | [Randolph W Duerr](https://appshunter.io/developer/629212455) |

## What reviewers say

### KruBoss Boxing Timer

[App page](https://appshunter.io/ios/app/kruboss-boxing-timer/id1338791547)

This interval timer mimics the functionality of a real gym clock, offering a straightforward and ad-free experience for martial arts training. Its intuitive design ensures immediate usability for anyone familiar with gym environments.

**Highlights:** Real gym clock interface, Ad-free experience, Intuitive for martial artists, Straightforward functionality

**Features:** Vision Pro support

**In-app purchases:** none


### SelfDefenseLiveZ

[App page](https://appshunter.io/ios/app/selfdefenselivez/id6502416160)

Discover effective self-defense techniques and moves with this comprehensive reference app. Find guidance based on your location or specific towns in the USA, enhanced by instructional videos. Designed to aid youth in their self-defense training.

**Highlights:** Information on various self-defense techniques, Find self-defense moves by location, Instructional videos of self-defense moves, Reference for self-defense training, USA-specific location search

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KruBoss Boxing Timer free?

KruBoss Boxing Timer is free to download, with no in-app purchases.

### Is SelfDefenseLiveZ free?

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

### Which has better reviews, KruBoss Boxing Timer or SelfDefenseLiveZ?

SelfDefenseLiveZ is rated higher. KruBoss Boxing Timer averages 4.9 out of 5 from 25 ratings, while SelfDefenseLiveZ averages 5.0 from 1 ratings.

### Do KruBoss Boxing Timer or SelfDefenseLiveZ have ads?

Neither KruBoss Boxing Timer nor SelfDefenseLiveZ shows ads.

### Which is updated more often, KruBoss Boxing Timer or SelfDefenseLiveZ?

KruBoss Boxing Timer ships an update every 3 months, and SelfDefenseLiveZ every 2 months. Most recently, KruBoss Boxing Timer was updated on November 2, 2026 and SelfDefenseLiveZ 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.*