# Kukai vs Mariners Log

The clearest difference is update cadence: Kukai at every 3 weeks against Mariners Log's every 4 months. Mariners Log's advantage is iOS requirement (11.0 vs 13.0). 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.

Kukai ships an update every 3 weeks, Mariners Log every 4 months. The most recent releases landed on August 17, 2026 and May 15, 2026 respectively.

## The numbers

| Metric | Kukai | Mariners Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/kukai/id1563851375/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 360 MB | 57 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [军 杨](https://appshunter.io/developer/1489139639) | [Kengineer Limited](https://appshunter.io/developer/1619488060) |

## What reviewers say

### Kukai

[App page](https://appshunter.io/ios/app/kukai/id1563851375)

This application connects to automatic key cutting machines via Bluetooth. It allows users to decode, cut, duplicate keys, and create key profiles, aiming to improve efficiency for locksmiths globally.

**Highlights:** Bluetooth connectivity to machines, Key decoding, Key cutting, Key duplication, Key profile creation, Intelligent updates

**Features:** macOS Compatibility

**In-app purchases:** none


### Mariners Log

[App page](https://appshunter.io/ios/app/mariners-log/id1619488058)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kukai free?

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

### Is Mariners Log free?

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

### Do Kukai or Mariners Log have ads?

Neither Kukai nor Mariners Log shows ads.

### Which is updated more often, Kukai or Mariners Log?

Kukai ships an update every 3 weeks, and Mariners Log every 4 months. Most recently, Kukai was updated on August 17, 2026 and Mariners Log on May 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*