# Synergeion Build: Kids Logic — Curiosity & creative thinking

> Curiosity & creative thinking (iPhone/iPad app by woosik choi.)

- Source: https://appshunter.io/ios/app/synergeion-build-kids-logic/id6777975502 (this page in markdown: same URL + `.md`)
- Developer: [woosik choi](https://appshunter.io/developer/1845521022)
- Category: Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 11 MB
- Languages: American English
- Released: 2026-06-16
- Data updated: 2026-08-14
- User reviews in markdown: https://appshunter.io/ios/app/synergeion-build-kids-logic/id6777975502/reviews.md

## What is Synergeion Build?

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.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full access | $7.99 | one-time |



## Version history (last 5 releases)

### 1.1.3 — 2026-08-08

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.

### 1.1.2 — 2026-08-05

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.

### 1.1.1 — 2026-07-26

change screenshots

### 1.1.0 — 2026-06-25

Now free to start - try it first, then unlock full access with a single one-time purchase.
Added background music and sound effects, tap Naru and Neti to hear them, and a link to Naru & Neti videos in Settings.

### 1.0 — 2026-06-17

No release notes.

## More apps by woosik choi

- [RoboTrail Coding Brain Trainer](https://appshunter.io/ios/app/robotrail-coding-brain-trainer/id6764465655)
- [Scientist Club: STEM Quiz](https://appshunter.io/ios/app/scientist-club-stem-quiz/id6771675434)
- [불안한개미 - 주식 시세 위젯](https://appshunter.io/ios/app/id6772662894)
- [Synergeion Wonder: Kids Play](https://appshunter.io/ios/app/synergeion-wonder-kids-play/id6774041352)
- [모두의 자격증: 자격증 시험 문제풀이](https://appshunter.io/ios/app/id6779944719)

All apps by woosik choi: https://appshunter.io/developer/1845521022

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-14.*