# SmartTub vs Roulette（ルーレット）

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.

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.

## The numbers

| Metric | SmartTub | Roulette（ルーレット） |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (13 ratings)](https://appshunter.io/ios/app/smarttub/id435173941/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 67.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 77 MB | 29 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [sorakaze Inc.](https://appshunter.io/developer/1046448101) | [Basement Apps, Inc.](https://appshunter.io/developer/1092009455) |

## What reviewers say

### SmartTub

[App page](https://appshunter.io/ios/app/smarttub/id435173941)

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.

**Highlights:** Tilt to move ducks, Shake to add ducks, Flick ducks, Tap ducks to quack, Force Touch on Apple Watch to reset

**Features:** Family Sharing, Apple Watch app, iMessage stickers

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extension Pack | $1.99 | one-time |


### Roulette（ルーレット）

[App page](https://appshunter.io/ios/app/roulette/id6756475184)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SmartTub free?

SmartTub is free to download, with in-app purchases available.

### Is Roulette（ルーレット） free?

Roulette（ルーレット） is free to download, with no in-app purchases.

### Do SmartTub or Roulette（ルーレット） have ads?

Roulette（ルーレット） shows ads; SmartTub does not.

### Which is updated more often, SmartTub or Roulette（ルーレット）?

SmartTub ships an update every 5 months, and Roulette（ルーレット） every 9 days. Most recently, SmartTub was updated on August 27, 2026 and Roulette（ルーレット） on September 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*