Comparison

1s Speed Math vs Number Master

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

1s Speed Math

Test your mental math skills with this fast-paced game. You have only one second to select the correct answer to reach a high score and challenge your friends. It's a quick and engaging way to improve your arithmetic abilities.

Highlights
  • One-second answer time
  • High score tracking
  • Challenge friends
  • Improve arithmetic skills
  • Quick gameplay
Features
Read full description

Instructions: - You have only one second to choose correct answer - Reach high score - Beat your friends

About

Number Master

Features
Read full description

NUMBER MASTER: Brain Training - The Ultimate Number Master! Welcome to Number Master, the most comprehensive brain training game collection designed to sharpen your mindand enhance your logical thinking skills. With over 8 unique game modes, this app is the perfect mental gym to improve your mental math speed, concentration, and problem-solving abilities. Get ready to test your limits and have fun! *** Top Game Modes (The Core Experience) Each game in Number Master is focused on developing a specific mathematical or logic skill: 1. Battle Arena (Math Quiz): Answer rapid-fire Addition, Subtraction, Multiplication, and Division problems in just 5 seconds. Challenge your fast calculation skills and accuracy under time pressure. 2. Sudoku: Master Logic and deductive reasoning with Easy, Medium, and Hard difficulty levels. 3. Make 10: Combine 4 given numbers to reach a total of 10 using basic operations. Develop creative thinking and arithmetic combinations. 4. Connect Sums (Number Link): Connect cells that add up to the same target sum within a time limit. Enhances observation and quick mental math. 5. Order Nine: Tap the numbers from 1 to 9 (or 9 to 1) in correct sequential order. Tests speed, agility, and concentration. 6. Speed Math: Solve a stream of simple equations one after another, with only 1 second per problem. The ultimate speed test. 7. Number Rain: Quickly calculate and tap the correct answer as it falls from the sky. Improves multi-tasking concentration. 8. Number Tower, 2048, & Target Sum: Classic strategy and Puzzle games that require patience, forward-thinking, and deep strategic planning. *** Key Features for Optimal Brain Training * Diverse Puzzle Collection: From high-speed Logic challenges to deep Sudoku and 2048 strategy games. * Fibonacci Bonus System: Adds a layer of competitiveness and motivation for players who answer questions correctly in a row. * Highscore Tracking: Automatically saves your best scores for every single game mode. * Dark Mode Support: Protects your eyes and provides a comfortable gaming experience in low-light conditions. * Relaxing Background Music (BGM): Helps you stay focused and immersed during your Brain Trainingsessions. * Multilingual Support: Enjoy the game in your preferred language. Download Number Master: Brain Training today to challenge your mental capacity and become a true Math Master!

Screenshots

1s Speed Math4 screens
Number Master4 screens

Verdict

The call

The clearest difference is update cadence: Number Master at every 2 weeks against 1s Speed Math's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

1s Speed Math ships an update every 9 months, Number Master every 2 weeks. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.

Scorecard1 real difference · 8 level
1s Speed Math versus Number Master: the parameters behind the verdict, then further details
Parameter1s Speed MathNumber Master
PriceFreeFree
Rating2.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 9 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size14 MB63 MB
Age rating4+12+
DeveloperAtoappsNguyen Pham Tuan Hoang

In-app purchases

None

1s Speed Math

No in-app purchases

None

Number Master

No in-app purchases

Questions

Is 1s Speed Math free?
1s Speed Math is free to download, with no in-app purchases.
Is Number Master free?
Number Master is free to download, with no in-app purchases.
Do 1s Speed Math or Number Master have ads?
Neither 1s Speed Math nor Number Master shows ads.
Which is updated more often, 1s Speed Math or Number Master?
1s Speed Math ships an update every 9 months, and Number Master every 2 weeks. Most recently, 1s Speed Math was updated on October 9, 2026 and Number Master on October 14, 2026.

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