SmartTub vs Roulette（ルーレット）
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SmartTub
Experience a playful virtual bath with floating ducks. Interact with them by tilting your device, shaking to add more, flicking them around, or tapping to hear them quack. Enjoy a simple, interactive entertainment experience.
- Tilt to move ducks
- Shake to add ducks
- Flick ducks
- Tap ducks to quack
- Force Touch on Apple Watch to reset
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Replicate the bath by SmartTub and enjoy swinging ducks! How to (iPad) - Tilt Device : move ducks - Shake Device : add ducks - Flick ducks : move ducks - Touch a duck : quack How to (AppleWatch) - Tilt Watch : move ducks - Shake Watch : add ducks - Flick ducks : move ducks - Force Touch : revert to the original number of ducks # To show add-on dialog, please turn "Show add-on" on in the Setting.app. # Demo video : http://www.youtube.com/watch?v=HsD4jtvstL8 Sound Effect ・OtoLogic(https://otologic.jp) ・WEB WAVE LIB(http://www.s-t-t.com/wwl)
Roulette（ルーレット）
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【最も簡単に使えるルーレットアプリ】 抽選イベントやルール決め、罰ゲームなどに重宝します。 ＜主な特徴＞ ・ルーレットの作成と保存 ・自動ストップと手動ストップ ・確率の調整 一人でも複数人でも使えるシンプルな設計になっております。
Screenshots
Verdict
The clearest difference is in-app purchases: Roulette（ルーレット） at none against SmartTub's 1. Roulette（ルーレット） also leads on update cadence (every 9 days vs every 5 months). SmartTub's advantage is ads (none vs shown) and device support (3 vs 1). On price 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. SmartTub sells 1 one-off in-app purchase. Roulette（ルーレット） asks for nothing beyond the download.
SmartTub ships an update every 5 months, Roulette（ルーレット） every 9 days. The most recent releases landed on August 27, 2026 and September 15, 2026 respectively.
| Parameter | SmartTub | Roulette（ルーレット） |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (13 ratings) — better | — |
| Positive reviews | 67.0% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Every 5 months | Every 9 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 16.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 77 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | sorakaze Inc. | Basement Apps, Inc. |
In-app purchases
SmartTub
- Extension Pack$1.99
Roulette（ルーレット）
No in-app purchases
Questions
Is SmartTub free?
Is Roulette（ルーレット） free?
Do SmartTub or Roulette（ルーレット） have ads?
Which is updated more often, SmartTub or Roulette（ルーレット）?
Other comparisons
