Mental Math Practice: 1x1
Quick Division & Arithmetic
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
What's 7 x 8? If you had to pause, this app is for you.
1x1 is a fast, focused way to sharpen your mental math. Practice multiplication tables, addition, subtraction, and division at your own pace. Pick your number range, start solving, and watch your speed improve day by day.
WHY 1x1 WORKS
• Covers all four operations: addition, subtraction, multiplication, and division
• Three difficulty levels: 1–10, 11–100, and 101–1,000
• Clean interface with zero distractions
• Quick sessions that fit into any schedule
• Built for every skill level, from 1st grade math facts to adult brain training
QUICK QUESTION WIDGET
Add the OneAndOne widget to your home screen and get a simple math question once per hour. It takes two seconds to answer and keeps your skills sharp without opening the app. Think of it as a mini math drill that runs in the background of your day.
FOR STUDENTS, PARENTS & LIFELONG LEARNERS
Whether you're helping your kid study multiplication tables for 3rd grade, brushing up on arithmetic for a GRE prep course, or just want to calculate tips faster at dinner, 1x1 has you covered. The app works great alongside school homework, tutoring sessions, or self-study.
Practice number facts, build speed, and gain confidence with every session. No ads interrupting your flow. No complicated menus. Just math.
HOW TO GET STARTED
1. Choose your operation (add, subtract, multiply, or divide)
2. Select a number range
3. Start solving and track your progress
Make mental math second nature. Download 1x1 and start your first math quiz today.
Ratings & Reviews
Bugfixes & small improvements.
The developer, Florian Schweizer, 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
- Florian Schweizer
- Size
- 30.1 MB
- Category
- Education
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and German
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro (Weekly) $2.99
- All Operators $2.99
- Pro (Yearly) $19.99
- Percent Operator $0.99
- Logarithm Operator $0.99
- Cosine Operator $0.99
- Sine Operator $0.99
- Numbers up to 1000 $0.99
- Division Operator $0.99
- Copyright
- © 2021 - 2026 Florian Schweizer