Zayed Green Challenge vs Tummyfish
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Zayed Green Challenge
This application aims to raise environmental awareness by promoting sustainable development goals. It was founded by the Zayed International Foundation for the Environment to recognize and encourage environmental achievements.
- Environmental awareness
- Sustainable development goals
- Promotes environmental achievements
- Founded by Zayed International Foundation
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ZAYED INTERNATIONAL FOUNDATION FOR THE ENVIRONMENT Founded in 1999 by UAE Vice President, Prime Minister and Ruler of Dubai His Highness Sheikh Mohammed bin Rashid Al Maktoum, the Zayed International Prize for the Environment is meant to recognize and encourage environmental achievements supporting and promoting the implementation of Agenda 21, Millennium Development Goals (MDGs) and the Johannesburg Plan of Implementation for Sustainable Development, in line with the vision and philosophy of the late Sheikh Zayed Bin Sultan Al Nahyan. This application aims to spread awareness about the environment.
Tummyfish
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.
- 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
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Brought to you by Nestlé for Healthier Kids, Tummyfish is the most playful way to help you encourage your kids to drink more water. Tummyfish is a virtual friend that teaches your kids the benefits of drinking water. Together, you form good drinking habits with rewards and games. After a harrowing adventure, Tummyfish finds a safe home in your child’s tummy. Now it’s up to you and your kids to keep her happy. For Parents: • Create a Tummyfish for each of your kids. • Set notifications for moments when your child needs water. • Track water consumption and progress with weekly and daily statistics. For your Kids: • Have fun playing with a Tummyfish in a lively environment. • See how water and sugary drinks affect your Tummyfish and her environment. • Unlock toys and mini-games to reward good drinking habits. Nestle for Healthier Kids is a science-based program created to help parents instill healthier eating, drinking and lifestyle habits in children between the ages of 4 to 12.
Screenshots
Verdict
The clearest difference is rating: Zayed Green Challenge at 4.5 against Tummyfish's 3.8. Tummyfish's advantage is ratings volume (8 vs 2). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Zayed Green Challenge holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 2 and 8 respectively.
Zayed Green Challenge ships an update every 2 months, Tummyfish every 3 months. The most recent releases landed on October 8, 2026 and October 24, 2026 respectively.
| Parameter | Zayed Green Challenge | Tummyfish |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | 3.8 (8 ratings) |
| Positive reviews | — | 85.7% of reviews |
| Number of ratings | 2 | 8 — better |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 46 MB | 274 MB |
| Age rating | 4+ | 4+ |
| Developer | SHEIKH ZAYED INTERNATIONAL PRIZE FOR THE ENVIRONMENT EST. | Nestlé |
Customer experience
Zayed Green Challenge
Tummyfish
In-app purchases
Zayed Green Challenge
No in-app purchases
Tummyfish
No in-app purchases
Questions
Is Zayed Green Challenge free?
Is Tummyfish free?
Which has better reviews, Zayed Green Challenge or Tummyfish?
Do Zayed Green Challenge or Tummyfish have ads?
Which is updated more often, Zayed Green Challenge or Tummyfish?
Other comparisons
