Tamagotchi is iconic, and not something a phone or watch app can replace. It is a thirty-year-old toy line with a specific physical form, a sound, and a cultural moment. Belly does not compete with that. Belly is what happens when you take the same core loop, a small pet you check on throughout the day, and rebuild it for the device most people now wear on their wrist: Apple Watch.
Why Apple Watch is the Right Surface for a Wrist Pet
The original Tamagotchi worked because it was always with you. You hooked it to a backpack, a belt loop, or a chain on your bag. You raised your wrist and pressed three buttons. The pet was glanceable in the most literal sense.
Apple Watch is the same form factor, except it is also the watch you already wear, with a display that lights up when you raise your wrist. A pet game on a phone misses this. The phone is the wrong size, requires a deliberate unlock and tap, and is too dense an interface for what should be a small, light interaction. The wrist is the right surface for this kind of pet.
Belly is built standalone for Apple Watch, with no iPhone companion app. The pet lives on your watch. That is on purpose.
Quick Comparison
| Feature | Belly (2026) | Tamagotchi (original 1996) |
|---|---|---|
| Form factor | Apple Watch app | Physical egg-shaped device |
| Where you keep it | On your wrist | Bag, belt loop, chain |
| Care input | Walking (Apple Health), feeding, playing | Three-button manual care |
| Permadeath | No | Yes |
| Customization | Hand-drawn cosmetics, scenes, auras, toys, food items | None |
| Social | Friends, leaderboard, visit | Limited (later models supported pairing) |
| Battery | Uses Apple Watch's built-in battery | Coin cell, replace every few months |
| Cost | Free | $15 to $25 retail (varies) |
| Cultural weight | New app from 2025 | 30 years of brand history |
What Belly Keeps from Tamagotchi
- Pixel art. Belly is a pixel pet, in the visual lineage of the original Tamagotchi LCD.
- Wrist-sized format. The pet is glanceable. You raise your wrist, you see your pet.
- Light-touch care. Short interactions woven into your day rather than long sessions.
- Care has consequences. If you neglect your pet over time, it shows.
What Belly Changes
- Steps as input. Apple Health does the work. You walk, your pet thrives.
- No permadeath. Missing a day does not kill the pet. There is no penalty for rest days.
- Deep customization. Hand-drawn cosmetics, scenes, auras, toys, and food items, far beyond what any 90s LCD device offered.
- Social. Add friends, see a leaderboard, visit each other's pets.
- Modern complications across rectangular, circular, and corner watch face families.
- Free. No purchase, no subscription, optional cosmetic IAPs only.
What Belly Cannot Replace
We are honest about this. A few things about Tamagotchi are not portable to an app, and never will be.
- The physical object. The egg shape, the lanyard, the satisfying button click.
- The cultural moment. Trading them in school. The lore. The merchandise.
- The brand. Bandai built thirty years of pet-care game design that an app cannot inherit.
If those are what you want, you want a Tamagotchi, not Belly. They sit alongside each other. Many Belly users grew up with Tamagotchis.
Which Should You Choose?
Choose Belly if you want:
- The Tamagotchi feeling on the watch you already wear
- Steps to count for something
- Deep customization and a wide content library
- A pet that does not die when you skip a day
- Social features (friends, leaderboard, visit)
- Free, with no required spending
Stick with Tamagotchi if you want:
- The physical object with the lanyard, the buttons, the egg shape
- Permadeath and the original consequences-of-care loop
- The brand, the lore, the toy-store experience
- To gift one to a kid (Belly works on Apple Watch Family Setup, but a Tamagotchi is its own thing)