# Tummyfish vs Osmo World

Tummyfish and Osmo World both sit at 3.8 stars, but that hides the real split: 86% of Tummyfish's written reviews are positive against 42% of Osmo World's. Tummyfish also leads on monetization model (free vs ad-supported). Osmo World's advantage is ratings volume (1.4K vs 8). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 3.8 for Tummyfish against 3.9 for Osmo World. That said, the two scores are not equally well evidenced: Osmo World has 1.4K ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 86% of Tummyfish's written reviews are positive against 42% of Osmo World's.

Tummyfish ships an update every 3 months, Osmo World every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Tummyfish | Osmo World |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (8 ratings)](https://appshunter.io/ios/app/tummyfish/id1139166275/reviews) | **[3.9 (1.4K ratings)](https://appshunter.io/ios/app/osmo-world/id1350943542/reviews)** |
| Number of ratings | 8 | **1.4K** |
| Positive reviews | **85.7% of reviews** | 42.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Ad-supported |
| Size | 274 MB | 347 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nestlé](https://appshunter.io/developer/451455699) | [Tangible Play](https://appshunter.io/developer/799157444) |

## What reviewers say

### Tummyfish

[App page](https://appshunter.io/ios/app/tummyfish/id1139166275)

This virtual friend encourages children to drink more water through interactive games and rewards. Parents can set reminders and track progress, while kids engage with their virtual companion in a lively environment.

**Highlights:** Virtual friend to encourage water intake, Interactive games and rewards, Parental notifications for hydration, Track water consumption statistics, Learn benefits of drinking water, Unlock toys and mini-games

**Features:** macOS Compatibility

**In-app purchases:** none


### Osmo World

[App page](https://appshunter.io/ios/app/osmo-world/id1350943542)

This app serves as a central hub for a collection of educational games designed to foster creativity, problem-solving, and social interaction in children. It allows users to launch into various Osmo games and collect virtual rewards.

**Highlights:** Launch Osmo games, Explore game library, Win collectible stickers, Hands-on learning, Promotes creativity, Encourages problem-solving, Fosters social interaction

**In-app purchases:** none

**What reviewers like**

- 👍 Fun and educational
- 🤩 Nostalgic and engaging
- 🎨 Creative expression
- 🕹️ Variety of mini-games

**What reviewers complain about**

- 🐛 Compatibility issues with newer devices
- 🔒 Difficult login/account management
- 💸 Expensive with additional purchases required
- 🔧 Glitchy and buggy performance

**Reported bugs**

- App crashes or freezes
- Camera recognition problems
- Saved progress/data loss
- Incompatibility with certain iPad models

**Requested features**

- More game content and updates
- Improved account/progress syncing
- Simplified setup and onboarding
- Better support for newer hardware


## Frequently asked questions

### Is Tummyfish free?

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

### Is Osmo World free?

Osmo World is free to download, with no in-app purchases.

### Which has better reviews, Tummyfish or Osmo World?

Osmo World is rated higher. Tummyfish averages 3.8 out of 5 from 8 ratings, while Osmo World averages 3.9 from 1.4K ratings.

### Do Tummyfish or Osmo World have ads?

Neither Tummyfish nor Osmo World shows ads.

### Which is updated more often, Tummyfish or Osmo World?

Tummyfish ships an update every 3 months, and Osmo World every 2 months. Most recently, Tummyfish was updated on October 24, 2026 and Osmo World on October 25, 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.*