# A3Calc vs Black Widow Key Machine V2

The clearest difference is price: Black Widow Key Machine V2 at Free against A3Calc's $1.99. Black Widow Key Machine V2 also leads on update cadence (monthly vs every 18 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Black Widow Key Machine V2 is free to download; A3Calc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

A3Calc ships an update every 18 months, Black Widow Key Machine V2 monthly. The most recent releases landed on October 26, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | A3Calc | Black Widow Key Machine V2 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/black-widow-key-machine-v2/id1600176672/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Monthly** |
| Monetization | — | Free |
| Size | 2 MB | 317 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Farren Domenici](https://appshunter.io/developer/583666476) | [Lock Labs, Inc.](https://appshunter.io/developer/1521325322) |

## What reviewers say

### A3Calc

[App page](https://appshunter.io/ios/app/a3calc/id1340952531)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Black Widow Key Machine V2

[App page](https://appshunter.io/ios/app/black-widow-key-machine-v2/id1600176672)

This utility app allows locksmiths to 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, duplication, and progression.

**Highlights:** Cut high-security keys, Cut edge-cut keys, Cut dimple keys, Cut tibbe keys, Cut tubular keys, Bluetooth mobile connectivity, Cut by code, duplicate, and progression

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is A3Calc free?

A3Calc costs $1.99, with no in-app purchases.

### Is Black Widow Key Machine V2 free?

Black Widow Key Machine V2 is free to download, with no in-app purchases.

### Do A3Calc or Black Widow Key Machine V2 have ads?

Neither A3Calc nor Black Widow Key Machine V2 shows ads.

### Which is updated more often, A3Calc or Black Widow Key Machine V2?

A3Calc ships an update every 18 months, and Black Widow Key Machine V2 monthly. Most recently, A3Calc was updated on October 26, 2026 and Black Widow Key Machine V2 on October 19, 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.*