Brainy Sleuth vs 82億分の1
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Brainy Sleuth
This puzzle game offers over 500 challenging levels with diverse gameplay mechanics. It combines various puzzle types with unique mobile interactions for an engaging experience. Enjoy a humorous and educational journey through brain-teasing riddles.
- 500+ challenging levels
- Brain-teasing riddles
- Find the difference and hidden object gameplay
- Unique mobile interactions
- Humorous scenarios and answers
- Educational content
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Brainy Sleuth: Riddle Quest is a portrait puzzle game featuring brain teasers, detective hidden-object levels and themed challenges. Tap, drag, shake or rotate your phone, look for clues and try a different way of thinking. Features • Brain teasers and detective levels that test your observation and reasoning. • Interactive puzzles combining touch controls and phone movements. • Simple visuals and playful, humorous situations. • In-game hints to help when you get stuck. The game contains ads and optional in-app purchases. You can purchase keys and an option to remove forced ads. After removing forced ads, you can still choose to watch rewarded ads to earn rewards.
82億分の1
Compete globally to achieve the highest score by tapping to hit a set probability. Aim for the world's best score and test your tapping speed in a special mode. Compete for world records in 5 or 10-second bursts.
- Set tap probability
- Score based on hits
- Global score competition
- Aim for world's best
- Rapid tap mode
- World record attempts
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自分で1タップするときに当たる確率を設定します。 当たったらその数がスコアに。 スコアの大きさを全国で競って、世界一を目指すゲーム。 連打力モードも搭載。 5秒または10秒間でのタップ力で世界記録を目指そう！
Screenshots
Verdict
The clearest difference is ads: 82億分の1 at none against Brainy Sleuth's shown. 82億分の1 also leads on update cadence (every 5 months vs every 32 months) and monetization model (free vs ad-supported). On price, in-app purchases, 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. Neither carries in-app purchases, so what you see is what you pay.
Brainy Sleuth ships an update every 32 months, 82億分の1 every 5 months. Both last shipped on November 3, 2026.
| Parameter | Brainy Sleuth | 82億分の1 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (43 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 43 — better | — |
| Update frequency | Every 32 months | Every 5 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 202 MB | 65 MB |
| Age rating | 12+ | 4+ |
| Developer | 魂动天下 | Ikumi NAKAMURA |
Customer experience
Brainy Sleuth
82億分の1
In-app purchases
Brainy Sleuth
No in-app purchases
82億分の1
No in-app purchases
