N'Back vs DivisorDescent
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
N'Back
Enhance sensory and working memory with this brain training application. It offers various modes to test your ability to recall sequences of numbers, progressing through different 'N' levels.
- Sensory memory improvement
- Working memory enhancement
- N'Back exercises
- Flash Mode
- Slow Mode
- Step Mode
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Improve Sensory Memory & Working Memory using N'Back. ◆Flash Mode / Slow Mode / Step Mode Tap the number key matches the one from N steps earlier in the sequence. In 1'Back 1 task1: count & memorize 2 task2: count & memorize 3 __keyboard__: answer for task1 4 task3: count & memorize 5 __keyboard__: answer for task2 6 task4: count & memorize : In 2'Back 1 task1: count & memorize 2 task2: count & memorize 3 task3: count & memorize 4 __keyboard__: answer for task1 5 task4: count & memorize 6 __keyboard__: answer for task2 7 task5: count & memorize :
DivisorDescent
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約数を体感せよ！ 「DivisorDescent」は、選んだ数の 約数 を素早く見つけてタップしていく、斬新な算数ゲームです。 • 数字の並びを縦・横グリッドから選択 • 正しい約数を見つけてタップで得点！ • 間違いや見逃しにはペナルティ！ • タイムボーナスやパーフェクトボーナスあり • 正解は色で即フィードバック 短時間で「数の力」を鍛えよう！
Screenshots
Verdict
The clearest difference is in-app purchases: DivisorDescent at none against N'Back's 1. DivisorDescent also leads on ads (none vs shown). On price, device support and iOS requirement 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. N'Back sells 1 one-off in-app purchase. DivisorDescent asks for nothing beyond the download.
| Parameter | N'Back | DivisorDescent |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) — better | — |
| Positive reviews | 70.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 9 months | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 6 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Yasuyoshi Ota | Katsuhiko Yao |
In-app purchases
N'Back
- Add Levels (3'Back-10'Back) and Remove Ads$2.99
DivisorDescent
No in-app purchases
