# K vs Baly4Docs

The clearest difference is device support: K at 3 against Baly4Docs's —. Baly4Docs's advantage is iOS requirement (15.6 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. K sells 3 one-off in-app purchases and Baly4Docs sells 1 in-app purchase, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

K ships an update every 5 months, Baly4Docs every 4 months. The most recent releases landed on September 17, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | K | Baly4Docs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (127 ratings)](https://appshunter.io/ios/app/k-test/id1465986606/reviews)** | — |
| Number of ratings | **127** | — |
| Positive reviews | 41.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | Free with in-app purchases | — |
| Size | 64 MB | 77 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [Vitalii Ruba](https://appshunter.io/developer/1465986605) | [MEDYCHNY TSENTR TSYTOS, TOV](https://appshunter.io/developer/1601860983) |

## What reviewers say

### K

[App page](https://appshunter.io/ios/app/k-test/id1465986606)

Prepare for medical licensing exams with a mobile application offering practice questions. Access study materials anytime, anywhere on your smartphone or tablet.

**Highlights:** Practice Krok exam questions, Study anytime, anywhere, Mobile accessibility, Targeted exam preparation

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ad | $0.99 | one-time |
| Remove ad | $4.99 | one-time |
| Remove ad | $9.99 | one-time |


### Baly4Docs

[App page](https://appshunter.io/ios/app/baly4docs/id1601860981)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Підписка на додаток Baly4Docs | $9.99 | per year |


## Frequently asked questions

### Is K free?

K is free to download, with in-app purchases available.

### Is Baly4Docs free?

Baly4Docs is free to download, with in-app purchases available.

### Which is updated more often, K or Baly4Docs?

K ships an update every 5 months, and Baly4Docs every 4 months. Most recently, K was updated on September 17, 2026 and Baly4Docs on September 6, 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.*