Comparison

Challenge! Sudoku vs ReMolthar

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

Head to head
About

Challenge! Sudoku

Engage in classic Sudoku puzzles with a competitive edge. Challenge players globally and locally to achieve top rankings on leaderboards. Customize difficulty levels to suit your skill, from beginner to expert.

Highlights
  • Global ranking system
  • Compete with friends
  • Multiple difficulty levels
  • User-friendly interface
  • Record sharing
Features
Read full description

* Introduction Our Sudoku app offers a simple yet addictive classic puzzle. Compete with other users and aim for the top position on the Sudoku rankings. * Key Features Ranking System: Share Sudoku records with players worldwide and compete on the rankings. Various Difficulty Levels: Suitable for beginners to experts, with customizable difficulty settings. Compete with Friends: Share Sudoku records with friends and compete together. User-Friendly Interface: Enjoy playing Sudoku with an intuitive and easy-to-use interface. * How to Get Started Choose your preferred Sudoku difficulty. Solve Sudoku puzzles and achieve records. Compete with others to rank higher on the leaderboard! Use our Sudoku app to improve your skills and aspire to become the Sudoku champion of the world!

About

ReMolthar

Engage in a strategic card game where players collect pearl cards to activate character cards and earn points. The first to reach 12 points triggers a final round, with the highest score winning. Utilize unique character abilities and a diamond system to adjust card values and achieve victory.

Highlights
  • Collect Pearl and Character Cards
  • Activate characters for points
  • Diverse activation cost combinations
  • Utilize Diamond system for card adjustments
  • Unique character abilities
  • Real-time online multiplayer (2-5 players)
  • AI bot support
Features
Read full description

Welcome to ReMolthar. Collect pearls, awaken characters in your portal, and engage in an intense battle of wits toward 12 points. ■ Goal of the Game Collect Pearl Cards (1–8) and meet activation cost requirements to activate Character Cards and earn points. The first player to reach 12 points triggers the final round. After all players take one additional turn, the player with the highest score wins. ■ Turn Structure Each turn consists of 3 actions. For each action, choose one of the following: Take 1 Pearl Card from either the Pearl Deck or the open market Place 1 Character Card from either the Character Deck or open characters into your portal Activate a character in your portal using Pearl Cards from your hand (gain points) Refresh all 4 cards in the Pearl Market ■ Diverse Activation Costs Each character requires a unique pearl combination. Examples include: 2 / 3 / 4 of the same number 3 / 5 consecutive numbers Total sums of 7 / 10 / 20 3 even numbers 3 odd numbers Two pairs Pair + a set of 6 Specific combinations (e.g. 2,2,2 / 3,4,5 / 1,3,5,7) With over 30 different cost patterns, every game demands a new strategy. ■ Diamond System When activating a character, you may spend 1 Diamond to adjust the value of one Pearl Card by ±1. This can become the key to completing difficult combinations. ■ Unique Character Abilities Some characters trigger special abilities when activated: Blue: Passive/Persistent abilities Red: One-time/Instant abilities ■ Portals and Strategy Your portal can hold up to 2 characters. Higher-scoring characters require more difficult costs, so choosing characters that match your hand is essential for victory. ■ Multiplayer Features Real-time online matches for 2–5 players Invite friends via room code or invitation link Instantly match with random players in public rooms Support for Normal and Advanced AI bots Real-time voice chat during games Automatic reconnection within 60 seconds after disconnection Global rankings (win rate, high score, cumulative score) Real-time game log tracking ■ Additional Information Google or Apple account login required Supports Korean and English Internet connection required Game can start with 2 or more participants (including AI bots) Enter the world of ReMolthar now!

Screenshots

Challenge! Sudoku4 screens
ReMolthar4 screens

Verdict

The call

The clearest difference is device support: ReMolthar at 4 against Challenge! Sudoku's 2. Challenge! Sudoku's advantage is iOS requirement (12.0 vs 15.0). On price, review sentiment, update cadence and ads 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

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Challenge! Sudoku versus ReMolthar: the parameters behind the verdict, then further details
ParameterChallenge! SudokuReMolthar
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings2 — better—
Update frequencyEvery 2 daysEvery 2 days
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod, Mac — better
Requires iOS12.0 — better15.0
Further details — not scored
Size58 MB77 MB
Age rating4+17+
DeveloperkyulabsnTeko

Customer experience

Challenge! Sudoku

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

ReMolthar

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Challenge! Sudoku

No in-app purchases

None

ReMolthar

No in-app purchases

Questions

Is Challenge! Sudoku free?
Challenge! Sudoku is free to download, with no in-app purchases.
Is ReMolthar free?
ReMolthar is free to download, with no in-app purchases.
Do Challenge! Sudoku or ReMolthar have ads?
Neither Challenge! Sudoku nor ReMolthar shows ads.
Which is updated more often, Challenge! Sudoku or ReMolthar?
Challenge! Sudoku ships an update every 2 days, and ReMolthar every 2 days. Most recently, Challenge! Sudoku was updated on October 30, 2026 and ReMolthar on October 31, 2026.

Other comparisons