Academics
OddOneTots
Which one doesn't belong? Four pictures, and every answer is right if it has a reason: the straw, because it isn't metal; the spoon, because it's round. Whybird asks why, then asks if a different one could be the odd one out. Use the picture decks, or snap four things at home that stay on your device. Ages 3–5.
▶ Play it nowBuilt for sittings of about 10 minutes on the screen. That is our design budget, not a measurement.
Meet your mentor
Every Spark & Anvil app has a friendly mentor character that demonstrates, asks, and patiently scaffolds learning.
Mentored by Whybird
#166534 Characters who teach
Meet the cast
Whybird the owl always asks why. Otherwyn wonders whether a different one could be the odd one out. Fourfold is the card table that holds the four pictures.
Whybird
asks "why?" after every choice and waits for a reason
Otherwyn
A curious fox - asks whether a different one could be the odd one out, too
Fourfold
A four-square card table - holds four pictures and turns them over with a thunk
What's inside
Learning goal
Which one doesn't belong? Four pictures, and every answer is right if it has a reason: the straw, because it isn't metal; the spoon, because it's round. Whybird asks why, then asks if a different one could be the odd one out. Use the picture decks, or snap four things at home that stay on your device. Ages 3–5.
Mentored by Whybird — no data leaves the device.
How OddOneTots handles your kid's data
- ✅ All progress, settings, and AI-generated content stays on the device
- ✅ No analytics, no tracking, no third-party SDKs
- ✅ Free — no ads, no in-app purchases
- ✅ No personal information collected from children — in line with COPPA (updated by the 2026 FTC amendments)
- ✅ No chat with strangers — play-together rooms use a short code and preset emotes, never typed messages
