Collect every nuclide, one day at a time.
Radionuclide Cards turns nuclear physics into a daily collecting game. Answer one question a day, and every correct answer unlocks a card from the 3,359 nuclides on the chart.
Download on the App Store For iPhone and iPad.How it works
One question a day, the same for every player on your level. Questions cover radioactivity, nuclear physics, radiation detection and the history of the field.
-
Answer the daily quiz
Get it right on the first try for two random radionuclide cards, or on your second try for one. Every answer comes with an explanation.
-
Build your collection
Each card shows decay type, half-life and main emission energies. Flip it over for spin, parity, Q-values and full emission tables.
-
Fill in the chart
Every card lights up its cell on a zoomable chart of nuclides, with the magic-number shell closures marked.
Made for curious minds
For physics students, radiation protection professionals, health physicists, or anyone curious about what the universe is made of.
- Three levels
- Start as a Beginner with the basics of atoms and radiation, then move up to Normal and Expert. Higher levels still mix in easier questions.
- Streak packs
- Keep a streak and first-try packs grow from 2 to 3, 4, then 5 cards. Streak freezes cover the days you miss.
- 42 medals
- Collection milestones from First Decay to Kilonuclide, plus bronze to platinum for every decay type.
- The chart in AR
- Place the whole chart on your table as a 3D city of nuclides, with column heights set by half-life.
- Explanations on device
- After answering, get a tutor-style explanation written by Apple Intelligence on your device. Requires a supported device.
No account, no ads, no tracking
The nuclear data is built into the app, and your progress stays in your own iCloud. Data comes from the IAEA Nuclear Data Section (ENSDF decay data and AME atomic masses).
Read the privacy policy