Numerlo
Mental Math for Professionals
Only for iPhone
Free · In‑App Purchases · Designed for iPhone
iPhone
Were you great at maths in school?
Now Excel does the thinking for you.
Numerlo is a 60-second daily mental sprint for professionals who want to stay sharp.
People notice fast thinkers.
Splitting bills. Catching mistakes. Estimating percentages.
Mental math signals sharpness - instantly.
But calculators and spreadsheets slowly take that edge away.
Numerlo brings it back in just 60 seconds a day. Designed for professionals and math lovers who want to stay sharp.
How it works
Complete a 60-second mental math sprint.
Track your progress with the Numerlo Index.
Watch your speed and accuracy improve over time.
Short. Focused. Habit-forming.
Free version includes
• 8 daily games + 2 challenger games
• Numerlo Index progress tracking
• No ads - ever
Premium unlocks
• Unlimited daily games
• Unlimited practice mode
• Professional Challenges
Built for people who used to be “math people”
Accountants. Engineers. Finance. Consulting. Medicine.
Anyone who wants sharper thinking in a world of calculators.
Privacy first
No tracking.
No ads.
Your data stays on your device.
You can’t fake mental math.
Build the advantage.
Privacy: https://numerlo.app/docs/privacy.html
Terms: https://numerlo.app/docs/terms.html
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
• Added Challenger Mode for more competitive gameplay
• New profession-based speed comparisons
• Improved display of derivatives and integrals with proper math symbols
• Performance and UI improvements
The developer, Nanxi Li, 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
- Nanxi Li
- Size
- 51.9 MB
- Category
- Productivity
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Monthly Premium $2.99
- Annual Premium $25.99
- Copyright
- © 2026 Nanxi Li