Comparison

Squid Sudoku vs @CalcMaster

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

Head to head
About

Squid Sudoku

Engage in classic number puzzles with multiple difficulty levels and daily challenges. Compete against friends or other players in exciting battles, or progress through a stage mode with numerous tasks. The app offers helpful tools like hints and auto-check to enhance your gameplay experience.

Highlights
  • Multiple difficulty levels
  • Daily challenges
  • Multiplayer battles
  • Stage mode with tasks
  • Hints and auto-check
  • Replay functionality
  • Customizable game skins
Features
Read full description

Squid Sudoku is a numbers puzzle. Simple, classic and easy to play are the features to lead you experience the fun of numbers game and become Sudoku Master! Power of observation and reasoning will be challenged in Squid Sudoku. Gameplay is simple enough but the arrangement of numbers varies dramatically, it is the reason why Squid Sudoku is so attractive, let’s enjoy it together! Fill with a number from 1-9 in the empty cells logically, according to randomly positioned numbers, and make sure each number is unduplicated in 9 rows, columns and blocks. You can not only enjoy Sudoku at any time, but also learn game solving skills by using Squid Sudoku. Features 1.There are five levels for different players, Beginner, Easy, Medium, Hard, Expert. No matter you are new or superior, you can easily find proper level for yourself here. 2.Daily Challenge. Join in Daily Challenge, let’s see how many players you can beat! 3.Exciting Battle games. You can auto-match players or invite friends to battle. 4.Challenge players. You can challenge players in Ranking by inviting him to start an exciting battle. 5.Stage Mode. There are five levels in Stage Mode, and fifty tasks in each level, let’s enjoy fun of stage breaking. 6.Hints, Notes, Auto-check, Highlight Duplicated Numbers and other functions are the reason why Squid Sudoku can be so easy! 7.Replay. Checking replays after games is helpful to know your game solving thought. In Squid Sudoku, you can... 1.Switch Sound Effects and Vibrate on/off 2.Switch Double Tap Note on/off 3.Switch Replay on/off 4.Switch Mistakes Limit on/off 5.Use Auto-Remove function to clear duplicated numbers of notes in each row, column and block after placing the one in empty cell. 6.Use Highlight Identical Numbers function to highlight the same digits, when you select a cell with a number. In Squid Sudoku, you can invite your friends to battle by Facebook Messenger and WhatsApp. As many as four kinds of game skins are available and you can choose Black to protect your eyes. Squid Sudoku with simple UI design in interface, clear layout and great user experience is available for Sudoku fans. It is not only a good method to spend time, but also a good a tool to make you better in thinking logically and have a great memory. Super mind twisting math puzzles and classic Sudoku games are here waiting for you! If you are a fan of Sudoku, you will love Squid Sudoku APP deeply. 【Squid Sudoku Membership subscription】 * Squid Sudoku membership will charge monthly or yearly depending on the plan purchased * There are 4 kinds of membership you can choose - Continuous monthly membership. $0.99 per month. Automatically renew for 1 month after expiration. Subscription can be cancelled at any time.Trial for 7 days. - Monthly Membership. Purchase one month membership for $1.99 - Seasonly Membership. Purchase three months membership for $4.99 - Yearly Membership. Purchase one year membership for $15.99 - Payment: After you confirm the membership purchase, the corresponding fee will be charge from your iTunes account. * Cancel auto-renewal: If auto renewal is no longer needed, please turn off automatic renewal in iTunes/Apple ID setting management at least 24 hours before the end of the current subscription period. * Auto-Renewal: The membership fee will be charged from your iTunes account according to your renewal plan within 24 hours before the end of the current subscription period. Privacy Policy: https://sudoku.argzz.com/agreements/privacy.html Terms of Service: https://sudoku.argzz.com/agreements/agreements.html If you have any thoughts or questions and want to tell us, please send to lijinling@ti-ding.com. We will be so glad to hear from you, thanks a lot!

About

@CalcMaster

Features
Read full description

@CalcMaster turns quick mental math into a daily puzzle habit. Each day you’ll face a hidden equation: guess numbers and operators, get color‑coded feedback on what’s correct, and use logic (not luck) to solve it before you run out of tries. Build a streak by coming back every day, tracking your progress on the calendar, and watching your best streak grow as you rack up points. Whether you’ve got 30 seconds or 10 minutes, it’s a fast, satisfying way to sharpen your math instincts. Play solo or with friends: add people you know, compare scores on a live leaderboard, send and accept friend requests, and browse profiles and stats to see who’s really the sharpest. Earn points as you play and spend them in the shop on new profile emojis and backgrounds to show off your style while you climb the ranks. Sign in with Game Center to submit your total points and best streak to global leaderboards and unlock achievements as you hit new milestones; games played, win streaks, total wins, and lifetime points. @CalcMaster also works offline, saving games locally and syncing them automatically the next time you’re online, so your streak and stats stay up to date wherever you play.

Screenshots

Squid Sudoku4 screens
@CalcMaster4 screens

Verdict

The call

The clearest difference is in-app purchases: @CalcMaster at none against Squid Sudoku's 4. @CalcMaster also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement 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. Squid Sudoku sells 4 in-app purchases, starting at $0.99 per month. @CalcMaster asks for nothing beyond the download.

UpkeepUpdate frequency

Squid Sudoku ships an update every 3 weeks, @CalcMaster every 10 days. Both last shipped on October 7, 2026.

Scorecard2 real differences · 8 level
Squid Sudoku versus @CalcMaster: the parameters behind the verdict, then further details
ParameterSquid Sudoku@CalcMaster
PriceFreeFree
Rating4.4 (13 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings13 — better—
Update frequencyEvery 3 weeksEvery 10 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.6 — better16.6
Further details — not scored
Size91 MB58 MB
Age rating12+12+
DeveloperShanghai Tiding Information Technology Co., Ltd.David Kelen

In-app purchases

4 purchases

Squid Sudoku

Subscriptions1
  • Consecutive Monthly$0.991 Month
One-time3
  • Monthly Pro$1.99
  • Quarterly Pro$4.99
  • Yearly Pro$15.99
None

@CalcMaster

No in-app purchases

Questions

Is Squid Sudoku free?
Squid Sudoku is free to download, with in-app purchases available.
Is @CalcMaster free?
@CalcMaster is free to download, with no in-app purchases.
Do Squid Sudoku or @CalcMaster have ads?
Squid Sudoku shows ads; @CalcMaster does not.
Which is updated more often, Squid Sudoku or @CalcMaster?
Squid Sudoku ships an update every 3 weeks, and @CalcMaster every 10 days. Most recently, Squid Sudoku was updated on October 7, 2026 and @CalcMaster on October 7, 2026.

Other comparisons