# 目指せ雑学王! vs ロックメモ

The clearest difference is in-app purchases: 目指せ雑学王! at none against ロックメモ's 7. 目指せ雑学王! also leads on iOS requirement (9.0 vs 15.0). ロックメモ's advantage is review sentiment (100% vs 67%) and update cadence (every 2 days vs every 20 months). On price, ads and device support there is nothing between them.

Both are free to download. ロックメモ sells 7 one-off in-app purchases. 目指せ雑学王! asks for nothing beyond the download.

目指せ雑学王! ships an update every 20 months, ロックメモ every 2 days. The most recent releases landed on October 15, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | 目指せ雑学王! | ロックメモ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 20 months | **Every 2 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 18 MB | 93 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Junpei Shimotsu](https://appshunter.io/developer/882299124) | [Shunsuke Kaburagi](https://appshunter.io/developer/1863899493) |

## What reviewers say

### 目指せ雑学王!

[App page](https://appshunter.io/ios/app/id1475754104)

Learn the origins and meanings of kanji through a quiz format. Explore categories based on pictographic roots and earn gold medals by achieving perfect scores. This app offers a quick and engaging way to study kanji.

**Highlights:** Learn kanji origins and meaning, Categorized kanji studies, Multiple-choice questions, Earn gold medals for perfect scores, 150 kanji questions included

**Features:** macOS Compatibility

**In-app purchases:** none


### ロックメモ

[App page](https://appshunter.io/ios/app/todo/id6796238041)

This app allows you to display notes and to-dos directly on your lock screen, ensuring you never forget important information. It also features a doodle function for creative expression and an idea generator to inspire your day.

**Highlights:** Lock screen note display, To-do list management, Customizable colors and designs, Freehand drawing/doodle function, Daily idea generator, Note and memo creation

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| チケット10枚 | $0.99 | one-time |
| チケット20枚 | $1.99 | one-time |
| プレミアムサービス | $2.99 | one-time |
| チケット50枚 | $3.99 | one-time |
| チケット100枚 | $5.99 | one-time |
| チケット300枚 | $14.99 | one-time |
| チケット500枚 | $24.99 | one-time |


## Frequently asked questions

### Is 目指せ雑学王! free?

目指せ雑学王! is free to download, with no in-app purchases.

### Is ロックメモ free?

ロックメモ is free to download, with in-app purchases available.

### Do 目指せ雑学王! or ロックメモ have ads?

Both 目指せ雑学王! and ロックメモ show ads.

### Which is updated more often, 目指せ雑学王! or ロックメモ?

目指せ雑学王! ships an update every 20 months, and ロックメモ every 2 days. Most recently, 目指せ雑学王! was updated on October 15, 2026 and ロックメモ on October 20, 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.*