
Synergeion Build: Kids Logic
Curiosity & creative thinking
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Free
In-App Purchases
About
Synergeion Build. Grow your child's creativity through questions and inquiry.
A thinking game for ages 6-9. Instead of memorizing answers, your child learns to doubt what they take for granted, ask "why?", and check for themselves, side by side with a parent.
5 minutes a day: "Really?"
Doubt one everyday belief, predict what will happen, and when you can, check it at home. Your growth record tracks how often your predictions were right.
Weekends: Detective Play
Dig into one big question across five steps: observe, guess, test, note, and share. Capture your child's thinking with photos, drawings, or voice.
Imagine Play
"What if?", "These two are alike". Open up and connect ideas.
A record that grows
Your child's words and ideas gather in one place: play, heart notes, and "Really?" reasons, browsable by kind. Build a little each day and Naru the beaver finishes a boat.
Made to enjoy together
Background music and sound effects come along. Tap Naru and Neti to hear them, and find Naru & Neti videos in Settings.
Safe by design
All records stay on this device and are never sent anywhere.
Settings and purchases open only after a parent check (a multiplication gate).
Korean and English.
Free to start
Try it as much as you like, then unlock full access with a single one-time purchase. It's a one-time purchase, not a subscription.
One small doubt a day grows a child who thinks for themselves.
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What's New in Synergeion Build
1.1.3
August 8, 2026
Fixed a blank screen that could appear when the app first opened. Keeping records safe Photos are stored a new way, so records stay put as they pile up. Yesterday's photo no longer shows on today's activity.
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In-App Purchases
$7.99
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