Mental Math Drills: Rank Test
Rank test, keypad, 4 choices
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
A drill app devoted to mental arithmetic.
Start with a rank test: up to 10 questions within a 2-minute limit. Your rank (1 to 10) appears on the home screen. It comes from your number of correct answers and your average time, and is an in-app guide only, not an official qualification.
TWO PRACTICE MODES
- Mental Math: addition, subtraction, multiplication and division. Levels 1-10.
- Glowing Number Sums: numbers light up one at a time; add them up and give the total (Levels 1-10). Higher levels show more digits, faster.
CHOOSE HOW TO ANSWER
- In the drills, type each answer on a numeric keypad or pick it from 4 choices. Your choice is remembered.
- The rank test is keypad only, so 4 choices never change your rank.
FEATURES
- Rank test: one question from each of Levels 1 to 10; no lives or coins are spent
- 60-second rounds; 10 correct answers clears a level
- Best score for each mode
- Daily bonus, daily missions and achievements
LIVES AND COINS
- A wrong answer costs a life; lives refill over time
- Refill hints and lives with coins; free users can also watch a rewarded video ad
IN-APP PURCHASES (all optional)
- Coin packs (consumable)
- Remove Ads (one-time purchase)
Every level can be played without buying anything.
Privacy Policy: https://apps.dhub-plus.com/apps/braintrainer/privacy/
Ratings & Reviews
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Improved how privacy choices are applied.
The developer, Iori WATANABE, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Iori WATANABE
- Size
- 8.2 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- 700 Coins $6.99
- 120 Coins $1.99
- Remove Ads $1.99
- Copyright
- © 2026 Iori Watanabe