# SmartTub vs Gachakon3D

The clearest difference is ads: SmartTub at none against Gachakon3D's shown. Gachakon3D's advantage is review sentiment (96% vs 67%) and rating (5.0 vs 4.7). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. SmartTub sells 1 one-off in-app purchase and Gachakon3D sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Gachakon3D holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 13 and 5 respectively. Written reviews point the same way: 67% of SmartTub's written reviews are positive against 96% of Gachakon3D's.

SmartTub ships an update every 5 months, Gachakon3D every 6 weeks. The most recent releases landed on August 27, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | SmartTub | Gachakon3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (13 ratings)](https://appshunter.io/ios/app/smarttub/id435173941/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/gachakon3d/id1444831749/reviews)** |
| Number of ratings | **13** | 5 |
| Positive reviews | 67.0% of reviews | **95.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 77 MB | 294 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [sorakaze Inc.](https://appshunter.io/developer/1046448101) | [STUDIO-KURA](https://appshunter.io/developer/289946976) |

## 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 |


### Gachakon3D

[App page](https://appshunter.io/ios/app/gachakon3d/id1444831749)

Experience a virtual toy capsule machine with a variety of collectible 3D figures, robots, and dinosaur skeletons. Discover games and toys, and use AR to view items in real size or control RC robots.

**Highlights:** Virtual toy capsule machine, Collect 3D figures and models, AR viewing and interaction, RC robot control with AR, Collect dinosaur bones, Play mini-games and toys

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bid Daddy | $0.99 | one-time |
| Big Mammy | $0.99 | one-time |


## Frequently asked questions

### Is SmartTub free?

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

### Is Gachakon3D free?

Gachakon3D is free to download, with in-app purchases available.

### Which has better reviews, SmartTub or Gachakon3D?

Gachakon3D is rated higher. SmartTub averages 4.7 out of 5 from 13 ratings, while Gachakon3D averages 5.0 from 5 ratings.

### Do SmartTub or Gachakon3D have ads?

Gachakon3D shows ads; SmartTub does not.

### Which is updated more often, SmartTub or Gachakon3D?

SmartTub ships an update every 5 months, and Gachakon3D every 6 weeks. Most recently, SmartTub was updated on August 27, 2026 and Gachakon3D on September 22, 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.*