Drop 10 vs 脳トレ！間違い探し
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Drop 10
This educational game helps young learners practice addition by focusing on sums that equal 10. It's designed for children in 1st and 2nd grade to build foundational math skills in an engaging way.
- Addition practice
- Focus on sums to 10
- Designed for 1st and 2nd graders
- Engaging gameplay
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Drop 10 is a math game that practices summing to 10. Most children start memorizing sums to 10 around 1st grade and 2nd grade.
脳トレ！間違い探し
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■カンタン操作で間違い探し！ ルールは簡単！ 2つのイラストを見比べて、違うところをタップしよう！ 間違いを5つ見つけたらステージクリア！ ■スキマ時間に自分のペースでプレイ！ 時間の制限がないので、いつでもどこでも気軽にパズルを遊べる！ あせらずに何回でも挑戦しよう！ ■豊富な問題数で楽しくチャレンジ！ 厳選された良問を100問収録！ かわいいイラストから美しい写真まで飽きずに遊ぼう！ 定番の間違え探しであなたの頭を鍛えよう！
Screenshots
Verdict
The clearest difference is review sentiment: Drop 10 at 100% against 脳トレ！間違い探し's 50%. Drop 10 also leads on ads (none vs shown) and rating (5.0 vs 4.6). 脳トレ！間違い探し's advantage is update cadence (every 5 months vs every 18 months). On price, ratings volume, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Drop 10 holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 21 and 27 respectively. Written reviews point the same way: 100% of Drop 10's written reviews are positive against 50% of 脳トレ！間違い探し's.
Drop 10 ships an update every 18 months, 脳トレ！間違い探し every 5 months. The most recent releases landed on October 18, 2026 and October 26, 2026 respectively.
| Parameter | Drop 10 | 脳トレ！間違い探し |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (21 ratings) — better | 4.6 (27 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 21 | 27 — better |
| Update frequency | Every 18 months | Every 5 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 70 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Sharyn Efimoff | nullhouse Inc. |
Customer experience
Drop 10
脳トレ！間違い探し
In-app purchases
Drop 10
No in-app purchases
脳トレ！間違い探し
No in-app purchases
Questions
Is Drop 10 free?
Is 脳トレ！間違い探し free?
Which has better reviews, Drop 10 or 脳トレ！間違い探し?
Do Drop 10 or 脳トレ！間違い探し have ads?
Which is updated more often, Drop 10 or 脳トレ！間違い探し?
Other comparisons
