Number Island 2
Subtract, Number Line, Make 10
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Subtraction within 10, the 1-20 number line, making ten, carrying and borrowing - six islands, six hands-on ways to play. Bilingual voice, no ads, no fail. Ages 5-7.
The same little fox has grown up and sailed off to a brand-new archipelago! **Number Island 2** picks up right where the original left off — addition within 10 — and takes kids further into subtraction within 10, the 1–20 number line, making ten, and addition/subtraction with carrying and borrowing within 20.
**Six islands, six hands-on ways to play**
Every island introduces a brand-new gesture-based activity, turning abstract math into something kids can touch, drag, and manipulate:
- Island 1 — Story Addition: fruit and shells appear in two groups, then combine so kids can count the total
- Island 2 — Take Away: drag objects off-screen and count what's left to practice subtraction
- Island 3 — Number Line: hop the fox along a number line, connecting quantity to position
- Island 4 — Ten-Frame: fill a ten-frame grid with objects to practice "making a ten"
- Island 5 — Carry Bridge: move pieces from a second tray to fill the first, discovering how carrying works
- Island 6 — Borrow Cave: break a bundle of ten into loose pieces, discovering how borrowing works
**Try before you decide, honestly labeled**
All 10 levels of Island 1 (Story Addition) are open to everyone — enough to fully experience the core gameplay. When you finish Island 1 or want to unlock more, you'll see a single in-app purchase option that unlocks Islands 2 through 6, all at once. It's a one-time purchase, not a subscription — no ads, and no repeated purchase pop-ups.
**Designed for kids, with parents in mind**
- Bilingual (Mandarin Chinese and English) voice narration guides every step — kids can play without needing to read
- No failure states: wrong answers get a gentle nudge to try again, never a penalty or a dead end
- Every level's first completion earns a sticker, building toward a 60-sticker collection
- A parental gate (a two-digit multiplication problem) sits in front of the purchase screen to prevent accidental buys
- **We collect no personal data, show no ads, and use no third-party analytics or tracking** — parents can hand this over with confidence
Recommended ages: 5–7, bridging preschool and first-grade math.
Ratings & Reviews
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Stability update: fixes an issue that could prevent the app from opening on some devices. This version requires iOS 17 or later.
The developer, YUCHEN CHANG, 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
- YUCHEN CHANG
- Size
- 278.5 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Made for Ages 6–8
- In-App Purchases
Yes
- Unlock All Islands $3.99
- Copyright
- © 2026 Leo Chang