# Vocab Vault Pro vs Lock Learn

The clearest difference is in-app purchases: Vocab Vault Pro at none against Lock Learn's 1. Lock Learn's advantage is update cadence (every 2 days vs every 5 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Lock Learn sells 1 one-off in-app purchase. Vocab Vault Pro asks for nothing beyond the download.

Vocab Vault Pro ships an update every 5 days, Lock Learn every 2 days. The most recent releases landed on September 30, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Vocab Vault Pro | Lock Learn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/lock-learn-passive-learning/id6778682190/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 3 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Omer Cavuslu](https://appshunter.io/developer/1876920438) | [MaxQ Consulting Services LLC](https://appshunter.io/developer/1814475176) |

## What reviewers say

### Vocab Vault Pro

[App page](https://appshunter.io/ios/app/vocab-vault-pro/id6759111391)

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

**In-app purchases:** none


### Lock Learn

[App page](https://appshunter.io/ios/app/lock-learn-passive-learning/id6778682190)

Learn new vocabulary effortlessly by having words and definitions appear on your phone's lock screen every 10 minutes. Create custom word lists for any subject, from languages to professional terms, and tap to explore them further. Start with 20 free words and unlock unlimited access with a one-time purchase.

**Highlights:** Lock screen vocabulary widget, Customizable word lists by topic, Definitions and grammar labels, Tap to view word details, One-time purchase for unlimited words

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LockLearn | $1.99 | one-time |


## Frequently asked questions

### Is Vocab Vault Pro free?

Vocab Vault Pro is free to download, with no in-app purchases.

### Is Lock Learn free?

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

### Do Vocab Vault Pro or Lock Learn have ads?

Neither Vocab Vault Pro nor Lock Learn shows ads.

### Which is updated more often, Vocab Vault Pro or Lock Learn?

Vocab Vault Pro ships an update every 5 days, and Lock Learn every 2 days. Most recently, Vocab Vault Pro was updated on September 30, 2026 and Lock Learn 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.*