# 詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! vs 素因数分解パズル

The clearest difference is in-app purchases: 詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! at none against 素因数分解パズル's 10. 詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! also leads on ads (none vs shown) and ratings volume (3 vs 1). 素因数分解パズル's advantage is update cadence (every 8 days vs every 2 months). On price, rating and device support there is nothing between them.

Both are free to download. 素因数分解パズル sells 10 one-off in-app purchases. 詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for 詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! against 5.0 for 素因数分解パズル. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! ships an update every 2 months, 素因数分解パズル every 8 days. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! | 素因数分解パズル |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/lv20/id1260880929/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/id6751097772/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 86.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 151 MB | 102 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HANAUTA INC.](https://appshunter.io/developer/492009717) | [Chikai Ito](https://appshunter.io/developer/1480561746) |

## What reviewers say

### 詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!!

[App page](https://appshunter.io/ios/app/lv20/id1260880929)

This Japanese chess game challenges players to solve puzzles by selecting the correct move. Progress through 20 increasingly difficult stages, with the game ending upon an incorrect selection. Successfully clearing stages requires strategic thinking and accurate choices.

**Highlights:** Japanese chess puzzles, Multiple choice answers, Stage-based progression, Increasing difficulty, Single-player gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


### 素因数分解パズル

[App page](https://appshunter.io/ios/app/id6751097772)

A unique math puzzle game where you shoot prime number bullets to break targets. Strategically place targets based on their numbers and the prime bullets you have. Enjoy 999 levels of brain-teasing fun that can be played offline.

**Highlights:** Unique prime number x math puzzle rules, 999 levels for long-term play, Simple tap controls, Quick play and endless modes, Offline play supported, Ranking feature

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 宝石80個 | $0.49 | one-time |
| 宝石250個 | $1.99 | one-time |
| スターターパック | $2.99 | one-time |
| 広告削除 | $5.99 | one-time |
| レギュラーパック | $5.99 | one-time |
| ピンチ脱出パック | $5.99 | one-time |
| 宝石1100個 | $7.99 | one-time |
| 宝石2250個 | $14.99 | one-time |
| 宝石5000個 | $29.99 | one-time |
| 宝石10500個 | $59.99 | one-time |


## Frequently asked questions

### Is 詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! free?

詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! is free to download, with no in-app purchases.

### Is 素因数分解パズル free?

素因数分解パズル is free to download, with in-app purchases available.

### Which has better reviews, 詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! or 素因数分解パズル?

詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! and 素因数分解パズル are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do 詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! or 素因数分解パズル have ads?

素因数分解パズル shows ads; 詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! does not.

### Which is updated more often, 詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! or 素因数分解パズル?

詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! ships an update every 2 months, and 素因数分解パズル every 8 days. Most recently, 詰め将棋LV20（五手詰め）〜どんどん強くなる将棋ゲーム!! was updated on November 6, 2026 and 素因数分解パズル on October 30, 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.*