The Marimo vs Seal Pet
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
The Marimo
Care for a virtual green ball creature that grows over time. Keep its environment clean and provide light to ensure its survival. Customize its appearance and interact with it through various gestures.
- Virtual pet care
- Growth simulation
- Environment maintenance
- Customization options
- Interactive controls
- Social sharing
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Thank you 1,130,000 download!! [About Marimo] Marimo means a plant like a green ball which grow in Hokkaido, Japan. You can raise a Marimo. A marimo will grow up little by little every day. When water become dirty, you need to refresh water. If you don't take care of a Marimo long time, Marimo will wither. [Other Features] - You can rename Marimo, and change background. - Drag to move Marimo. - Double tap to pick tap Marimo. - Rotate marimo with two finger. - Marimo moves by the direction of the device. - You can upload image of Marimo on Twitter/Facebook. - Photosynthesis occurs in a bright place.
Seal Pet
Easily raise adorable seals on your mobile device. Enjoy their cute movements and soothing music while they grow daily. Simple care routines make it perfect for busy individuals or those new to games.
- Raise virtual seals
- Easy care: feed every 3 days, clean weekly
- Seals grow in real-time
- Interactive seal movements
- Listen to music while playing
- Name and rename your seal
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Completely free! ・ You can easily grow cute seals in the mobile. ・ There is no doubt that he will be healed by the seal's pretty movement. ・ We are also focusing on music. This is an app to grow the seal in the mobile. Taking care of you is very easy. Feed only once on 3 days and clean once a week. It is also recommended for those who are not good at games and busy people. Please be healed with this app to see the seals grow daily. [Main function] ・ We can feed on seals, and you can take care of them. -Seals grow little by little every day. -The seal will come to the place you touched. ・ We can look at seal while listening to music (we can turn off from menu) ・ You can give your seal any name you like. You can change the name at any time. ・ Update the size in 1-second increments so that the size of the seal can be seen in real time. ・ When you start the app, you can see how much it has grown since the last time.
Screenshots
Verdict
The clearest difference is update cadence: Seal Pet at monthly against The Marimo's every 3 months. Seal Pet also leads on rating (4.6 vs 4.4) and ratings volume (192 vs 16). On price, review sentiment, 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.
Seal Pet holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Seal Pet has 192 ratings behind it against 16, so its average is the more settled of the two. Written reviews complicate that: 79% of The Marimo's written reviews are positive against 76% of Seal Pet's, so the app with the better star average is not the one people write more warmly about.
The Marimo ships an update every 3 months, Seal Pet monthly. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.
| Parameter | The Marimo | Seal Pet |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (16 ratings) | 4.6 (192 ratings) — better |
| Positive reviews | 78.9% of reviews — better | 76.2% of reviews |
| Number of ratings | 16 | 192 — better |
| Update frequency | Every 3 months | Monthly — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 45 MB |
| Age rating | 4+ | 9+ |
| Developer | Kosuke Ogawa | sio honda |
Customer experience
The Marimo
Seal Pet
In-app purchases
The Marimo
No in-app purchases
Seal Pet
No in-app purchases
