# SmartTub vs Zoner PDA

The clearest difference is in-app purchases: Zoner PDA at none against SmartTub's 1. Zoner PDA also leads on review sentiment (100% vs 71%) and rating (5.0 vs 4.7). SmartTub's advantage is device support (3 vs 1). On price, ratings volume, ads and iOS requirement there is nothing between them.

Both are free to download. SmartTub sells 1 one-off in-app purchase. Zoner PDA asks for nothing beyond the download.

Zoner PDA 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: 71% of SmartTub's written reviews are positive against 100% of Zoner PDA's.

SmartTub ships an update every 5 months, Zoner PDA every 6 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SmartTub | Zoner PDA |
| --- | --- | --- |
| 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/zoner-pda/id6790610538/reviews)** |
| Number of ratings | **13** | 5 |
| Positive reviews | 70.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 77 MB | 66 MB |
| Requires iOS | 16.6 | **16.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [sorakaze Inc.](https://appshunter.io/developer/1046448101) | [Zone 37](https://appshunter.io/developer/6790610540) |

## 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 |

**What reviewers like**

- 🦆 Cute rubber ducks
- 😌 Relaxing and calming
- 🧸 Good for children
- ✨ Simple and fun
- 💖 Highly recommended

**What reviewers complain about**

- 🤷‍♀️ Lacks clear purpose
- 🥱 Becomes boring quickly
- 💸 In-app purchase expensive
- 🖱️ Limited interaction
- ❓ Confusing controls

**Reported bugs**

- Widget not working
- App not launching on Apple Watch SE
- App icon not appearing on screen

**Requested features**

- Add more toys and variations
- Implement a delete duck feature
- Add different colored ducks
- Allow water to react to touch
- Add a ripple effect


### Zoner PDA

[App page](https://appshunter.io/ios/app/zoner-pda/id6790610538)

Enhance your airsoft role-playing experience with real-time quest tracking, an interactive map, and dynamic in-game events. Manage your in-game currency, scan quest items, and stay informed with personalized notifications.

**Highlights:** Individual and side quests, Interactive map with POIs, Real-time radiation tracking, Emission alerts and timers, Automatic quest rewards, Quest item scanning, In-game wiki

**In-app purchases:** none


## Frequently asked questions

### Is SmartTub free?

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

### Is Zoner PDA free?

Zoner PDA is free to download, with no in-app purchases.

### Which has better reviews, SmartTub or Zoner PDA?

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

### Do SmartTub or Zoner PDA have ads?

Neither SmartTub nor Zoner PDA shows ads.

### Which is updated more often, SmartTub or Zoner PDA?

SmartTub ships an update every 5 months, and Zoner PDA every 6 weeks. Most recently, SmartTub was updated on November 6, 2026 and Zoner PDA on October 31, 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.*