Comparison

Linear Equations Calculator vs Sudoku Solver Realtime Camera

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

Head to head
About

Linear Equations Calculator

This educational app solves linear equations with detailed step-by-step solutions and visual plots. It supports various input methods, including points and slopes, and saves all calculations in a history log for easy access and sharing.

Highlights
  • Step-by-step linear equation solving
  • Graphical plotting of results
  • Calculation history log
  • Supports various input methods (points, slope)
  • Decimal and fraction input support
  • Solution sharing functionality
Features
Read full description

Get your homework done instantly. Prepare for exams without stress. Free, complete step-by-step solutions. Enter your values and compute linear equations from slope, intercept, or two points – including graphical visualization. HOW IT WORKS Enter your values in the appropriate fields and get started. You’ll receive the solution instantly and can share it with friends or classmates. YOUR PERSONAL DATA We don’t need it. Only anonymized data is collected, for example: - which features are used - how many solutions are generated This helps us improve. No conclusions can be drawn about you. COSTS Everything is free to use. 24/7 access to your solutions. All solution steps are always fully shown. If you need many solutions in a short time, various purchase options are available. EXTRAS - Overview of input options - Curated learning videos - Feedback for incorrect inputs - Manage your own solutions - Introduction to the app CONTACT Questions and feedback via Discord or directly in the app review.

About

Sudoku Solver Realtime Camera

Instantly solve Sudoku puzzles using your device's camera or by selecting a photo. It identifies invalid boards, provides hints, and checks your final solution. Supports various Sudoku sizes and offers different solving modes.

Highlights
  • Real-time camera solving
  • Photo import solving
  • Error checking for invalid boards
  • Hinting for next move
  • Supports 9x9 and 4x4 boards
  • Handwritten number recognition
Features
Read full description

Scan, solve, and now play Sudoku in one app. PLAY SUDOKU • Choose from 155 built-in Easy, Hard, and Expert puzzles. • Turn a Sudoku scanned with the camera or selected from Photos into a playable board. • Resume games, track completion, and remove saved scanned puzzles from your library. • Use Undo, Redo, Notes, Smart Notes, and cell highlighting. • Detect both immediate row/column/box conflicts and moves that leave the puzzle with no valid solution. • Ask for a Hint that selects a strong next cell. Optional explainable hints describe why the cell was chosen. • Review player statistics, solving times, streaks, and hint-free wins. HINT CREDITS A fresh installation includes 3 Hint credits for Sudoku gameplay. Each revealed Hint uses one credit. Watch a rewarded ad to earn 3 more Hint credits, or upgrade to PRO for unlimited hints. CAMERA & PICTURE SOLVER Point the camera at a printed or handwritten Sudoku board to recognize and solve it in real time, or choose an image from Photos. Correct recognized digits before solving, enlarge the detected board with pinch gestures, save scanned puzzles to history, and reopen them later. The solver supports 9×9 and 4×4 boards and can: • Solve the full puzzle. • Reveal one cell. • Identify the most useful cell to solve next. • Show possible numbers as pencil marks. • Flag conflicting, unsolvable, and completed boards. • Display focused and clear board views. • Provide live framing, lighting, and steadiness guidance. CAMERA/PICTURE SESSION CREDITS AND PRO A fresh installation includes 5 session credits. One credit covers a camera session until you return to the menu, or one selected picture, and is used only after the first successful solution or hint. Earn another session credit with a rewarded ad, or use PRO for unlimited solving. PRO is available as Weekly and Annual auto-renewing subscriptions or a one-time Lifetime purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel subscriptions in your Apple Account settings. Privacy Policy: https://whitewhalesoft.com/apps/sudokusolverrealtimecamera/privacy.html Terms & Conditions: https://whitewhalesoft.com/apps/sudokusolverrealtimecamera/terms.html Questions or suggestions: zhaoxiaojian@hotmail.com

Screenshots

Linear Equations Calculator4 screens
Sudoku Solver Realtime Camera4 screens

Verdict

The call

The clearest difference is review sentiment: Linear Equations Calculator at 75% against Sudoku Solver Realtime Camera's 19%. Linear Equations Calculator also leads on rating (4.1 vs 3.4) and ads (none vs shown). On price, ratings volume, in-app purchases and monetization model 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. Linear Equations Calculator sells 8 one-off in-app purchases and Sudoku Solver Realtime Camera sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Linear Equations Calculator holds the better App Store score, 4.1 against 3.4. Both are backed by a comparable volume of ratings — 28 and 43 respectively. Written reviews point the same way: 75% of Linear Equations Calculator's written reviews are positive against 19% of Sudoku Solver Realtime Camera's.

UpkeepUpdate frequency

Linear Equations Calculator ships an update every 3 weeks, Sudoku Solver Realtime Camera every 2 months. The most recent releases landed on September 14, 2026 and September 24, 2026 respectively.

Scorecard5 real differences · 5 level
Linear Equations Calculator versus Sudoku Solver Realtime Camera: the parameters behind the verdict, then further details
ParameterLinear Equations CalculatorSudoku Solver Realtime Camera
PriceFreeFree
Rating4.1 (28 ratings) — better3.4 (43 ratings)
Positive reviews75.0% of reviews — better19.0% of reviews
Number of ratings2843 — better
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size179 MB33 MB
Age rating4+4+
DeveloperGlindemann, Sennoun, Langer GbR小健 赵

Customer experience

Linear Equations Calculator

All ratings28 ratings
Positive78.6%
Neutral0.0%
Negative21.4%
Written reviews16 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Sudoku Solver Realtime Camera

All ratings43 ratings
Positive58.1%
Neutral2.3%
Negative39.5%
Written reviews21 reviews
Positive19.0%
Neutral0.0%
Negative81.0%

In-app purchases

8 purchases

Linear Equations Calculator

One-time8
  • +30 User Tokens$0.29
  • +1 Convenience Token / 6h, max. +2$0.59
  • +2 Convenience Tokens / 6h, max. +4$0.99
Show 5 more
  • +150 User Tokens$0.99
  • +300 User Tokens$1.49
  • +4 Convenience Tokens / 6h, max. +8$1.59
  • Remove Ads$1.99
  • Lifetime Access$1.99
4 purchases

Sudoku Solver Realtime Camera

Subscriptions3
  • Weekly Premium Subscription3 Days trial$1.997 Days
  • Monthly Premium Subscription3 Days trial$3.991 Month
  • Annual Premium Subscription3 Days trial$17.991 Year
One-time1
  • Remove ads.$39.99

Questions

Is Linear Equations Calculator free?
Linear Equations Calculator is free to download, with in-app purchases available.
Is Sudoku Solver Realtime Camera free?
Sudoku Solver Realtime Camera is free to download, with in-app purchases available.
Which has better reviews, Linear Equations Calculator or Sudoku Solver Realtime Camera?
Linear Equations Calculator is rated higher. Linear Equations Calculator averages 4.1 out of 5 from 28 ratings, while Sudoku Solver Realtime Camera averages 3.4 from 43 ratings.
Do Linear Equations Calculator or Sudoku Solver Realtime Camera have ads?
Sudoku Solver Realtime Camera shows ads; Linear Equations Calculator does not.
Which is updated more often, Linear Equations Calculator or Sudoku Solver Realtime Camera?
Linear Equations Calculator ships an update every 3 weeks, and Sudoku Solver Realtime Camera every 2 months. Most recently, Linear Equations Calculator was updated on September 14, 2026 and Sudoku Solver Realtime Camera on September 24, 2026.

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