Comparison

Subtraction Math Master vs Luck Sword

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

Head to head
About

Subtraction Math Master

Enhance your mental math skills with this game focused on 2-digit subtraction. It offers modes for quick challenges and unlimited practice, helping you reduce calculator reliance and boost cognitive function.

Highlights
  • Improve 2-digit mental subtraction
  • Timed challenges and unlimited practice modes
  • Track scores and statistics
  • Game Center Leaderboards & Achievements
  • Share scores with friends and family
  • Stylish and intuitive interface
Features
Read full description

* Improve 2 digit mental Subtraction ! * Keep your mind active through training and competition. * Boost daily productivity. Background: Everyday we come across situations where we need to do quick math operations and most of the time we just reach for the calculator and punch numbers. This game will help you rely less on that calculator and hopefully in time you will be proficient in mental 2 digit subtraction. Features: - Stylish and intuitive user interface - Subtract numbers from 10 to 99 as fast as possible - 2 modes: PLAY & WORK - STATISTICS: Track your best score, average score and total games played - Share scores with family and friends - Game Center Leaderboards & Achievements supported ** PLAY Solve subtraction questions as fast as you can in one minute to achieve a high score! Can you reach the coveted "S" rank? ** WORK (In-app purchase required) Unlimited training time will further prepare you for the 1 minute subtraction marathon. ** SHARE Share your results with friends and family through Facebook, Twitter, Sina Weibo, etc. Find out who among you is a Subtraction Master!

About

Luck Sword

Features
Read full description

Summon legendary swords and keep pushing your personal upgrade records. Luck Sword is a casual forge game about discovering swords, turning duplicates into progress, and crafting relics that make every new attempt stronger. Discover a sword through summoning, then begin upgrading it. Success raises its best record. Failure still leaves you with duplicates, shards, and protection options for the next attempt. Rebuild quickly to your previous best and challenge the levels beyond it. Features - Summon new swords with gold earned through play and complete your collection - Endless upgrades that let every sword keep setting higher records - Dismantle duplicate swords and use shards to improve success rates - Craft and level the Dimensional Lantern, Primordial Ember, and Immortal Echo relics - Convert fragments into tiered materials and protection tickets - Build combos and hit PERFECT timing in Hammer of Fate - Compete in platform weekly leaderboards and overall sword rankings - A fully rebuilt dark-fantasy forge interface - Simple play with local save data Summoning, probability, and ads Sword summoning uses in-game gold earned through play and is not a real-money product. Summoning and upgrade probabilities are available inside the game. Rewarded ads are optional, and the core game remains playable without watching ads. The game does not include cash rewards, cash-out mechanics, online gambling, paid gacha, or paid random boxes.

Screenshots

Subtraction Math Master4 screens
Luck Sword4 screens

Verdict

The call

The clearest difference is in-app purchases: Luck Sword at none against Subtraction Math Master's 1. Luck Sword also leads on update cadence (every 4 days vs every 18 months). Subtraction Math Master's advantage is ads (none vs shown) and iOS requirement (8.0 vs 15.0). 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. Subtraction Math Master sells 1 one-off in-app purchase. Luck Sword asks for nothing beyond the download.

UpkeepUpdate frequency

Subtraction Math Master ships an update every 18 months, Luck Sword every 4 days. The most recent releases landed on September 29, 2026 and October 7, 2026 respectively.

Scorecard4 real differences ยท 4 level
Subtraction Math Master versus Luck Sword: the parameters behind the verdict, then further details
ParameterSubtraction Math MasterLuck Sword
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 18 monthsEvery 4 days โ€” better
AdsNo โ€” betterYes
In-app purchasesYesNo โ€” better
MonetizationFree with in-app purchasesโ€”
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 โ€” better15.0
Further details โ€” not scored
Size4 MB240 MB
Age rating4+9+
DeveloperPeter LiBongwook Bin

In-app purchases

1 purchases

Subtraction Math Master

One-time1
  • WORK MODE$0.99
None

Luck Sword

No in-app purchases

Questions

Is Subtraction Math Master free?
Subtraction Math Master is free to download, with in-app purchases available.
Is Luck Sword free?
Luck Sword is free to download, with no in-app purchases.
Do Subtraction Math Master or Luck Sword have ads?
Luck Sword shows ads; Subtraction Math Master does not.
Which is updated more often, Subtraction Math Master or Luck Sword?
Subtraction Math Master ships an update every 18 months, and Luck Sword every 4 days. Most recently, Subtraction Math Master was updated on September 29, 2026 and Luck Sword on October 7, 2026.

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