# Lockeigo vs Memora X 日本史一問一答

The clearest difference is review sentiment: Lockeigo at 100% against Memora X 日本史一問一答's 54%. Lockeigo also leads on in-app purchases (none vs 1). Memora X 日本史一問一答's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. Memora X 日本史一問一答 sells 1 one-off in-app purchase. Lockeigo asks for nothing beyond the download.

Lockeigo ships an update every 2 days, Memora X 日本史一問一答 every 4 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Lockeigo | Memora X 日本史一問一答 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 53.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 4 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 22 MB | 22 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [yohei ueda](https://appshunter.io/developer/1881263178) | [Issei Sato](https://appshunter.io/developer/6791698667) |

## What reviewers say

### Lockeigo

[App page](https://appshunter.io/ios/app/lockeigo/id6792405907)

Enhance your English vocabulary by learning new expressions directly from your iPhone's lock screen. Create custom flashcards, organize them into folders, and receive personalized review reminders. Unlock advanced features and customization options with a subscription.

**Highlights:** Create custom English flashcards, Organize vocabulary into folders, Display cards in Live Activities and widgets, Personalized review reminders, Customizable themes and fonts, Search words, meanings, and examples

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

**In-app purchases:** none


### Memora X 日本史一問一答

[App page](https://appshunter.io/ios/app/memora-x/id6807089373)

This app offers a comprehensive Japanese history quiz experience for university entrance exams. It covers 20 years of past exam questions, allowing users to learn terms, dates, and essay topics. Features include spaced repetition, customizable difficulty, and progress tracking to aid memorization.

**Highlights:** 20 years of past exam questions, 4,305 quiz questions per year, Spaced repetition learning, Adjustable difficulty levels, Essay question practice, Customizable 'my wordbook'

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プラチナMAX会員（買い切り） | $5.99 | one-time |


## Frequently asked questions

### Is Lockeigo free?

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

### Is Memora X 日本史一問一答 free?

Memora X 日本史一問一答 is free to download, with in-app purchases available.

### Do Lockeigo or Memora X 日本史一問一答 have ads?

Both Lockeigo and Memora X 日本史一問一答 show ads.

### Which is updated more often, Lockeigo or Memora X 日本史一問一答?

Lockeigo ships an update every 2 days, and Memora X 日本史一問一答 every 4 days. Most recently, Lockeigo was updated on October 31, 2026 and Memora X 日本史一問一答 on November 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.*