# K vs Mariner's Draft Survey

The clearest difference is update cadence: Mariner's Draft Survey at every 4 days against K's every 4 months. K's advantage is iOS requirement (13.0 vs 15.5). On price, ads, in-app purchases and device support there is nothing between them.

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

K ships an update every 4 months, Mariner's Draft Survey every 4 days. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | K | Mariner's Draft Survey |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Size | 70 MB | 75 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FALKOR AS](https://appshunter.io/developer/1202196855) | [Burak Yesilirmak](https://appshunter.io/developer/6817890583) |

## What reviewers say

### K

[App page](https://appshunter.io/ios/app/k-fleet-logbook/id1643901748)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mariner's Draft Survey

[App page](https://appshunter.io/ios/app/mariners-draft-survey/id6818049235)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is K free?

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

### Is Mariner's Draft Survey free?

Mariner's Draft Survey is free to download, with no in-app purchases.

### Do K or Mariner's Draft Survey have ads?

Neither K nor Mariner's Draft Survey shows ads.

### Which is updated more often, K or Mariner's Draft Survey?

K ships an update every 4 months, and Mariner's Draft Survey every 4 days. Most recently, K was updated on October 15, 2026 and Mariner's Draft Survey on October 24, 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.*