# Kukai vs Black Widow Key Machine

The clearest difference is rating: Black Widow Key Machine at 4.5 against Kukai's 1.0. On price, ratings volume, 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.

Black Widow Key Machine holds the better App Store score, 4.5 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Kukai ships an update every 3 weeks, Black Widow Key Machine every 5 weeks. The most recent releases landed on August 17, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Kukai | Black Widow Key Machine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/kukai/id1563851375/reviews) | **[4.5 (2 ratings)](https://appshunter.io/ios/app/black-widow-key-machine/id1577877042/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 360 MB | 149 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [军 杨](https://appshunter.io/developer/1489139639) | [American Key Supply](https://appshunter.io/developer/1128576890) |

## 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


### Black Widow Key Machine

[App page](https://appshunter.io/ios/app/black-widow-key-machine/id1577877042)

This mobile tool allows locksmiths to quickly cut various types of keys, including high-security, edge-cut, dimple, tibbe, and tubular blanks. It connects via Bluetooth to a mobile device for cutting keys by code, duplicating, and progression.

**Highlights:** Cuts high-security keys, Cuts edge-cut keys, Cuts dimple keys, Cuts tibbe keys, Cuts tubular keys, Bluetooth connectivity, Cut by code functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kukai free?

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

### Is Black Widow Key Machine free?

Black Widow Key Machine is free to download, with no in-app purchases.

### Which has better reviews, Kukai or Black Widow Key Machine?

Black Widow Key Machine is rated higher. Kukai averages 1.0 out of 5 from 1 ratings, while Black Widow Key Machine averages 4.5 from 2 ratings.

### Do Kukai or Black Widow Key Machine have ads?

Neither Kukai nor Black Widow Key Machine shows ads.

### Which is updated more often, Kukai or Black Widow Key Machine?

Kukai ships an update every 3 weeks, and Black Widow Key Machine every 5 weeks. Most recently, Kukai was updated on August 17, 2026 and Black Widow Key Machine 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.*