3D記憶力テスト～脳トレ・認知症予防アプリ vs Subtraction App
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
3D記憶力テスト～脳トレ・認知症予防アプリ
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[遊び方] ①建物の中にある家具や物を覚える。 ②建物の中にある家具や物が変化する。 ③変化した場所を見つける。 [難易度設定] タイトル画面の「難易度設定」ボタンから、難易度をカスタマイズできます。 ステージ、覚える時間、回答時間、変化する数、間違えて良い回数、などを設定できます。 ステージは「初級」「中級」「上級」の３種類から選択できます。
Subtraction App
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The developer is a first-dan level player. What rank can you get? If you can reach Rank 1–3 on your first try, that’s pretty amazing. ■ Skills tested Decision-making Flexible thinking Reaction speed Adaptability Memory, and more. Both adults and kids can enjoy this. Think of it as a brain-training mini game and give it a try! ^^
Screenshots
Verdict
The clearest difference is in-app purchases: 3D記憶力テスト～脳トレ・認知症予防アプリ at none against Subtraction App's 1. 3D記憶力テスト～脳トレ・認知症予防アプリ also leads on iOS requirement (12.0 vs 14.0). Subtraction App's advantage is update cadence (every 2 weeks vs every 29 months). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Subtraction App sells 1 in-app purchase, starting at $1.99 per month. 3D記憶力テスト～脳トレ・認知症予防アプリ asks for nothing beyond the download.
3D記憶力テスト～脳トレ・認知症予防アプリ ships an update every 29 months, Subtraction App every 2 weeks. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.
| Parameter | 3D記憶力テスト～脳トレ・認知症予防アプリ | Subtraction App |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 29 months | Every 2 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 199 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Takuma Takahashi | Foodmenu.world Inc. |
In-app purchases
3D記憶力テスト～脳トレ・認知症予防アプリ
No in-app purchases
Subtraction App
- Premium$1.991 Month
Questions
Is 3D記憶力テスト～脳トレ・認知症予防アプリ free?
Is Subtraction App free?
Do 3D記憶力テスト～脳トレ・認知症予防アプリ or Subtraction App have ads?
Which is updated more often, 3D記憶力テスト～脳トレ・認知症予防アプリ or Subtraction App?
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