# Locksley vs BioCaL

The clearest difference is in-app purchases: Locksley at none against BioCaL's 1. Locksley also leads on iOS requirement (14.0 vs 17.0). BioCaL's advantage is update cadence (every 2 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. BioCaL sells 1 one-off in-app purchase. Locksley asks for nothing beyond the download.

Locksley ships an update every 3 weeks, BioCaL every 2 days. The most recent releases landed on August 30, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Locksley | BioCaL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/locksley/id6475052736/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 528 MB | 23 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Locksley.app LLP](https://appshunter.io/developer/1723225065) | [Yoshikazu Mikawa](https://appshunter.io/developer/1778069380) |

## What reviewers say

### Locksley

[App page](https://appshunter.io/ios/app/locksley/id6475052736)

This app provides quick reference information for locksmiths, covering mortice lock identification, gearbox identification, high security cylinders, and hinge adjustment guides. It serves as a digital sidekick for professionals in the trade.

**Highlights:** Mortice lock identification, Gearbox identification, High security cylinder guides, Hinge adjustment guides, Quick reference information

**Features:** macOS Compatibility

**In-app purchases:** none


### BioCaL

[App page](https://appshunter.io/ios/app/biocal/id6476985449)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BioCaL Premium Access | $4.99 | one-time |


## Frequently asked questions

### Is Locksley free?

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

### Is BioCaL free?

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

### Do Locksley or BioCaL have ads?

Neither Locksley nor BioCaL shows ads.

### Which is updated more often, Locksley or BioCaL?

Locksley ships an update every 3 weeks, and BioCaL every 2 days. Most recently, Locksley was updated on August 30, 2026 and BioCaL on September 10, 2026.

---

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