# LockVocab vs JunJun

The clearest difference is in-app purchases: JunJun at none against LockVocab's 1. LockVocab's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

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

LockVocab ships an update every 3 days, JunJun every 2 days. The most recent releases landed on October 17, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | LockVocab | JunJun |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | **Every 2 days** |
| Size | 26 MB | 17 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Poyu Chiang](https://appshunter.io/developer/1835443971) | [Jun Oyamada](https://appshunter.io/developer/6798144460) |

## What reviewers say

### LockVocab

[App page](https://appshunter.io/ios/app/lockvocab-lock-screen-words/id6794406991)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 完整版 | $1.99 | one-time |


### JunJun

[App page](https://appshunter.io/ios/app/junjun-study-community/id6798144458)

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

**In-app purchases:** none


## Frequently asked questions

### Is LockVocab free?

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

### Is JunJun free?

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

### Do LockVocab or JunJun have ads?

Neither LockVocab nor JunJun shows ads.

### Which is updated more often, LockVocab or JunJun?

LockVocab ships an update every 3 days, and JunJun every 2 days. Most recently, LockVocab was updated on October 17, 2026 and JunJun on October 14, 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.*