AppMarketSpy › Education › 19×19
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App info
- Developer
- JINGZHE JIANG
- Category
- Education
- Released
- Sep 25, 2026
- Version
- 1.2 (Oct 21, 2026)
- Price
- $2.99
- Size
- 5.0 MB
- Requires
- iOS 18.0
- Age rating
- 9+
- Languages
- English, Japanese, Korean, Simplified Chinese, Traditional Chinese
In-app purchases
noneCurrent prices, App Store US.
About 19×19
Build confidence with multiplication from 1 to 19 through short lessons, practice, and review. A 10-DAY LEARNING PLAN Learn 190 fact pairs, organized by calculation method across 10 lessons. Swapping the factors covers all 361 ordered combinations. Explore doubling, breaking numbers into tens and ones, and working back from 20. ASSESSMENT AND REVIEW Start with an optional 20-question assessment. Spaced review uses your answers to bring back facts that need practice, with mistakes and due facts taking priority. FORWARD AND REVERSE PRACTICE Find the product: 12 × 13 = □ Find the factors: 156 = □ × □ Choose either mode or mix them. Factors range from 1 to 19. Both factor orders are included, and reverse questions accept any valid factor pair within that range. YOUR PACE, YOUR TIMER The default is 5 seconds per question. Choose 3, 5, 6, or 10 seconds, or set a limit from 1 to 30 seconds.…
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