# KozBon vs Phage Study

The clearest difference is update cadence: KozBon at every 2 weeks against Phage Study's every 5 months. KozBon also leads on ratings volume (5 vs 1). Phage Study's advantage is iOS requirement (13.0 vs 26.0). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for KozBon against 5.0 for Phage Study. That said, the two scores are not equally well evidenced: KozBon has 5 ratings behind it against 1, so its average is the more settled of the two.

KozBon ships an update every 2 weeks, Phage Study every 5 months. The most recent releases landed on October 6, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | KozBon | Phage Study |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/kozbon/id1193790136/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/phage-study/id1658579818/reviews) |
| Number of ratings | **5** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | Free | Free |
| Size | 5 MB | 59 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Kozinga](https://appshunter.io/developer/796299114) | [Adaptive Phage Therapeutics, Inc](https://appshunter.io/developer/1575574864) |

## What reviewers say

### KozBon

[App page](https://appshunter.io/ios/app/kozbon/id1193790136)

This utility app helps you find and test Bonjour network services. It allows you to discover existing services, broadcast your own custom services, and browse a large library of pre-configured service types. Designed for all Apple platforms with accessibility features.

**Highlights:** Discover Bonjour network services, Broadcast custom Bonjour services, 120+ built-in service types, Create custom service types, Native support for iPhone, iPad, Mac, Vision Pro, Full VoiceOver support

**Features:** Vision Pro support

**In-app purchases:** none


### Phage Study

[App page](https://appshunter.io/ios/app/phage-study/id1658579818)

Access information about clinical studies focused on using bacteriophages to combat multi-drug resistant infections. This utility provides details on ongoing research and treatment approaches.

**Highlights:** Clinical study information, Phage therapy details, Multi-drug resistant infections, Research updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KozBon free?

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

### Is Phage Study free?

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

### Which has better reviews, KozBon or Phage Study?

KozBon and Phage Study are both rated 5.0 out of 5 on the App Store, from 5 and 1 ratings respectively.

### Do KozBon or Phage Study have ads?

Neither KozBon nor Phage Study shows ads.

### Which is updated more often, KozBon or Phage Study?

KozBon ships an update every 2 weeks, and Phage Study every 5 months. Most recently, KozBon was updated on October 6, 2026 and Phage Study on October 18, 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.*