Qubitchi
Entertainment
Free · Designed for iPhone. Not verified for macOS.
Qubitchi is a virtual pet that's actually alive — because it's a real qubit on an IBM quantum computer.
Most pets are made up. Qubitchi isn't. Adopt one and you're adopting a genuine quantum bit on real superconducting hardware, chilled to fifteen millikelvin — a hair above absolute zero. Its mood is its physics: when the qubit holds a clean quantum state, your pet is thriving. When noise creeps in and the qubit starts to forget — decoherence, the central problem of quantum computing — your pet grows drowsy, unwell, and eventually decoherent. Nothing is faked. Qubitchi is a window onto a real machine.
HOW IT WORKS
• Every reading comes from live IBM Quantum telemetry — coherence times (T1/T2), calibration, and queue depth.
• Health is judged against each qubit's own 30-day baseline, never an absolute scale. Every qubit is different, so a "good" chip at its own normal is just as healthy as a "great" one at its.
• Tap your egg to hatch it, then watch your pet grow from hatchling to adult over days.
WHAT YOU CAN DO
• Adopt any qubit on any available backend — each is its own pet, with its own age.
• Follow a 7-day coherence chart, like a paediatric growth chart for a quantum bit.
• Explore the neighbourhood — the other qubits sharing your pet's chip in IBM's heavy-hex layout.
• Read the diary — a running log of how your pet's mood has shifted.
• Earn badges for real milestones: holding a state past 100 microseconds, surviving full decoherence, bouncing back from a rough spell.
• Climb the Quantum League — live leaderboards ranking every qubit on the fleet by coherence, health, and stability.
• Browse your menagerie — every qubit you've ever adopted, in one place.
LEARN BY CARING
Decoherence is the hardest idea in quantum computing to feel in your gut. Qubitchi makes it personal: you come to understand what T2 means because your pet's life depends on it. No equations required — just attention.
PRIVATE BY DESIGN
Qubitchi collects nothing about you. It fetches public hardware data and keeps your adopted pets on your device. No accounts, no tracking, no ads.
Qubitchi is an independent project and is not affiliated with, or endorsed by, IBM.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Your qubit comes to the wrist.
Qubitchi is now on Apple Watch, showing the same pet you're watching on your iPhone — its mood, live, whenever you glance down. Swipe up and you'll find its badges too.
Every reading is real telemetry from IBM Quantum hardware, as ever.
The developer, David Starling, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- David Starling
- Size
- 3.7 MB
- Category
- Entertainment
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Dave Starling