Comparison

Sudoku Solver AI vs 21Moves | Cube Puzzle Solver

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

Head to head
About

Sudoku Solver AI

This app uses AI and text recognition to solve Sudoku puzzles from photos, screenshots, or manual input. Get hints, play, share, or print your puzzles. An in-app purchase removes ads.

Highlights
  • AI-powered Sudoku solving
  • Camera and screenshot import
  • Manual input mode
  • Get hints for cells
  • Play, share, and print puzzles
  • User guide included
Features
Read full description

Sudoku Solver AI is an app that you can solve any Sudoku by Import Sudoku using Text Recognizer Technology. You can solve Sudoku by three mode. ◆ Camera mode you have to take photo of Sudoku by App then crop & verify character. ◆ Screenshot mode you have to bring screenshot from gallery by App then crop & verify character. ◆ Manual Mode you have to type each character of Sudoku one by one. You can solve entire sudoku or tap on cell get hint You can also Play, Share & Print Sudoku App Also have user guide for App Functions. Popup Keypad for Smart Typing. App contains light ads remove ads buy In App Purchase.

About

21Moves | Cube Puzzle Solver

This app helps you solve your Rubik's Cube with visual, step-by-step instructions. It offers a quick solver, a cube scanner to analyze your current puzzle state, and even identifies missing or misplaced pieces. Become a puzzle-solving pro and improve your concentration and speed.

Highlights
  • 3D cube scanning
  • Visual step-by-step instructions
  • Quick cube solving
  • Cube fixer for missing/misplaced pieces
  • Puzzle skill building
  • Manual input for custom combinations
Read full description

Stuck on how to solve your Rubik's Cube? 21Moves has your back. Solve your magic cube in under 3-minutes with visual step-by-step instructions to help you become a puzzle solving pro. 21Moves provides you with a visual guide on how to solve your cube in under, you guessed it, 21 moves! Dive into the easiest, most efficient way to solve one of the most popular puzzles enjoyed by millions. Join over 3 million cubers who have used 21Moves to develop top problem-solving and pattern recognition skills. Save hours of frustration with simple instructions guiding you to solve your cube in a matter of minutes. Improve your concentration and speed over time to show off your Rubik’s cube solving skills to the world. Getting started with 21Moves is simple. Simply scan a 3D model of your cube and get step-by-step directions on how to solve it. You get a personalized guide for solving your magic cube no matter its current state. 21Moves also recommends fixes for your cube if a piece is missing or placed incorrectly. Download the ultimate Rubik’s cube solver and get easy to follow visual instructions that are sure to turn you into a magic cube master. 21MOVES FEATURES CUBE SCANNER - Getting started on your magic cube solution is easy with in-app scanning tools - Simply perform a 3D scan of your current cube using your camera and get started - 21Moves provides simple and clear instructions on how to approach your cube - You can also manually input your existing cube on 21Moves blank template for custom combinations QUICK CUBE SOLVER - 21Moves provides you with detailed instructions to solve your cube in just a few minutes - Test your problem solving skills as you reorganize your magic cube in under 21 moves - Easily reset a cube to solve it again - Avoid the hours of frustration that come with manually learning to solve a cube thanks to 21Moves CUBE FIXER - Solve puzzles and maintain your cube by identifying missing pieces or misplaced blocks - Fix your cube in minutes and get back to solving PUZZLE SKILL BUILDING - Become a problem-solving pro as you learn the ins and outs of solving different Rubik’s cube formats - Identify patterns after resolving puzzles to make it easier to tackle the next one - Memorize solutions and increase your speed as you progress through different combinations See what users are saying: • "My cube was pretty messed up yet this app managed to solve it in just 20 moves”. • "OMG It actually works! I thought it would be a gimmick… I’m SHOCKED! Thank you so much!” • "My cube was pretty messed up yet this app managed to solve it in just 20 moves”. • "It fixes ur Rubik’s cube in less than two minutes”. • "[...] I’ve tried this app and guess what happened it worked I always doubted on all these other fake rubiks apps solvers but this specific app is the best one”. • "[...] Simple, elegant, and user friendly for quite literally any age. Plus it makes you feel like a genius!” ------------ Questions or feedback? We read every single email and review. Get five-star customer service directly from the developer at nico@opitas.io or at https://bit.ly/3hoFQkN. Disclaimer: All company names (Rubik’s Brand Ltd) are trademarks or registered trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Sudoku Solver AI4 screens
21Moves | Cube Puzzle Solver4 screens

Verdict

The call

The clearest difference is rating: 21Moves | Cube Puzzle Solver at 4.7 against Sudoku Solver AI's 3.0. 21Moves | Cube Puzzle Solver also leads on ads (none vs shown) and ratings volume (60K vs 2). On price, update cadence, 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. Sudoku Solver AI sells 4 in-app purchases, starting at $4.99 per month and 21Moves | Cube Puzzle Solver sells 10 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

21Moves | Cube Puzzle Solver holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: 21Moves | Cube Puzzle Solver has 60K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of Sudoku Solver AI's written reviews are positive against 70% of 21Moves | Cube Puzzle Solver's.

UpkeepUpdate frequency

Sudoku Solver AI ships an update fortnightly, 21Moves | Cube Puzzle Solver weekly. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Sudoku Solver AI versus 21Moves | Cube Puzzle Solver: the parameters behind the verdict, then further details
ParameterSudoku Solver AI21Moves | Cube Puzzle Solver
PriceFreeFree
Rating3.0 (2 ratings)4.7 (60K ratings) — better
Positive reviews50.0% of reviews69.6% of reviews — better
Number of ratings260K — better
Update frequencyFortnightlyWeekly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.614.0 — better
Further details — not scored
Size84 MB157 MB
Age rating4+4+
DeveloperMohit SingiOpitas Inc.

Customer experience

Sudoku Solver AI

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

21Moves | Cube Puzzle Solver

All ratings59,570 ratings
Positive93.0%
Neutral1.6%
Negative5.4%
Written reviews723 reviews
Positive69.6%
Neutral5.0%
Negative25.4%

Bugs and requests

Sudoku Solver AI

Not enough reviews yet to summarise bugs or requests.

21Moves | Cube Puzzle Solver

Reported bugs

3 issues
  • Scanning issues due to lighting conditions
  • App crashing or freezing after first use
  • Inaccurate cube representation on screen

Requested features

3 requests
  • Support for different cube sizes (2x2, 4x4, etc.)
  • Option to skip tutorial
  • Ability to solve cube without payment

In-app purchases

4 purchases

Sudoku Solver AI

Subscriptions3
  • 1 Month$4.991 Month
  • 1 Year$7.991 Year
  • 6 Month$7.996 Months
One-time1
  • Life Time Pro$9.99
10 purchases

21Moves | Cube Puzzle Solver

Subscriptions8
  • Unlimited Access$1.991 Month
  • Unlimited Access$3.991 Month
  • Unlimited Access2 variants$4.991 Year
Show 5 more
  • Unlimited Access$7.991 Year
  • Unlimited Access$9.991 Year
  • Unlimited Access$14.991 Year
  • Unlimited Access$19.991 Year
  • Unlimited Access$24.991 Year
One-time2
  • Unlimited Access$29.99
  • Unlimited Access$74.99

Questions

Is Sudoku Solver AI free?
Sudoku Solver AI is free to download, with in-app purchases available.
Is 21Moves | Cube Puzzle Solver free?
21Moves | Cube Puzzle Solver is free to download, with in-app purchases available.
Which has better reviews, Sudoku Solver AI or 21Moves | Cube Puzzle Solver?
21Moves | Cube Puzzle Solver is rated higher. Sudoku Solver AI averages 3.0 out of 5 from 2 ratings, while 21Moves | Cube Puzzle Solver averages 4.7 from 60K ratings.
Do Sudoku Solver AI or 21Moves | Cube Puzzle Solver have ads?
Sudoku Solver AI shows ads; 21Moves | Cube Puzzle Solver does not.
Which is updated more often, Sudoku Solver AI or 21Moves | Cube Puzzle Solver?
Sudoku Solver AI ships an update fortnightly, and 21Moves | Cube Puzzle Solver weekly. Most recently, Sudoku Solver AI was updated on October 29, 2026 and 21Moves | Cube Puzzle Solver on October 31, 2026.

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