Comparison

Number Master vs Arrow Harbor Chain

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

Head to head
About

Number Master

Features
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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!

About

Arrow Harbor Chain

Features
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Arrows want to leave the harbor. When a head touches a tail of the same color, it inherits the path the arrow ahead took, and they leave together. That's the whole game in one line. And that one line produces 965 different puzzles. โ–  One rule, learned once Tap an arrow and its whole body slides toward the head. A body bent like a hook retraces the path it came along, and corners hold their spot until the tail passes through. Match colors and the path connects. That's everything you need to know. โ–  All 965, checked by machine Every one of the 600 campaign routes and 365 daily routes was machine-verified: each has a solution that finishes within its move limit, and that solution uses no hint, no undo, and no payment. Hints and undo are shortcuts for when you want to move faster, not requirements to pass. A stuck moment means there's a move you haven't spotted yet, not a moment that needs money. โ–  Nothing to lose on a failed attempt Restarting is always free. Undo comes with 3 free uses per route. Life caps at 5 and refills automatically, one every 30 minutes. โ–  600 campaign routes, 365 daily routes The campaign spans 20 harbors, 30 routes each. Boards widen and colors multiply as you go. Daily routes bring a fresh puzzle every day. The first five routes ease you into the rules, so take your time there. โ–  A quiet screen Cream and teal tones, a wooden harbor. No flashy effects, no countdown pressure. Spending a long time on one puzzle is exactly how this game is meant to be played. Interstitial ads don't appear during your first 10 routes. A one-time purchase removes interstitial ads for good; rewarded ads you choose to watch stay available.

Screenshots

Number Master4 screens
Arrow Harbor Chain4 screens

Verdict

The call

The clearest difference is in-app purchases: Number Master at none against Arrow Harbor Chain's 7. Number Master also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Arrow Harbor Chain's advantage is update cadence (weekly vs every 2 weeks). On price and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Arrow Harbor Chain sells 7 one-off in-app purchases. Number Master asks for nothing beyond the download.

UpkeepUpdate frequency

Number Master ships an update every 2 weeks, Arrow Harbor Chain weekly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard4 real differences ยท 3 level
Number Master versus Arrow Harbor Chain: the parameters behind the verdict, then further details
ParameterNumber MasterArrow Harbor Chain
PriceFreeFree
Positive reviewsโ€”100.0% of reviews
Update frequencyEvery 2 weeksWeekly โ€” better
AdsNo โ€” betterYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 โ€” better15.0
Further details โ€” not scored
Size63 MB304 MB
Age rating12+4+
DeveloperNguyen Pham Tuan HoangRECRE8BOX

In-app purchases

None

Number Master

No in-app purchases

7 purchases

Arrow Harbor Chain

One-time7
  • 500 Coins$0.99
  • Booster Pack$1.99
  • No Ads$2.99
Show 4 more
  • 1500 Coins$2.99
  • Starter Bundle$4.99
  • Growth Pass$4.99
  • 4000 Coins$6.99

Questions

Is Number Master free?
Number Master is free to download, with no in-app purchases.
Is Arrow Harbor Chain free?
Arrow Harbor Chain is free to download, with in-app purchases available.
Do Number Master or Arrow Harbor Chain have ads?
Arrow Harbor Chain shows ads; Number Master does not.
Which is updated more often, Number Master or Arrow Harbor Chain?
Number Master ships an update every 2 weeks, and Arrow Harbor Chain weekly. Most recently, Number Master was updated on October 30, 2026 and Arrow Harbor Chain on November 5, 2026.

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