Comparison

MoleCube 3D vs OpenCube

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

Head to head
About

MoleCube 3D

This app combines the logic of Sudoku with the spatial challenge of a Rubik's Cube. Arrange colored spheres on each side of a 3D cube so that each side displays all nine colors. Offers realistic graphics and intuitive swipe controls for an engaging puzzle experience.

Highlights
  • 3D realistic graphics
  • Intuitive swipe controls
  • Undo last action
  • Tilt to change perspective
  • Two 3D styles (spherical/square)
  • Zoom and brightness adjustment
  • Two cube sizes (3x3x3, 2x2x2)
Features
Read full description

# What is MoleCube? "MoleCube = Sudoku puzzle + Rubik's Cube", roughly. MoleCube (also called Nine-Color Cube, Ball Sudoku Cube), combines the logic of "Sudoku + Rubik’s cube". Each of the cube’s six sides is comprised of a 3x3 grid of colored spheres. To solve the Molecube, arrange the spheres so that each side contains all nine colors. # How to Play This app presents the cube in 3D with a smooth sliding operation, and you can change the perspective by tilting the phone, just like playing a real Rubik's cube. Swipe across the cube to rotate one layer, and swipe across the blank area to rotate the whole cube. To start playing the game, click the scramble button and the stopwatch will start. # The Goal of Game Molecube is composed of 9 different colors of spheres distributed over 6 sides of a cube. Instead of arranging the colors by side like in a Rubik’s Cube, your goal is to have one piece of every color represented on each side. It’s a problem that’s easier to describe than to solve. This hybrid puzzle blends the spatial challenge of a Rubik’s Cube with the logical test of a Sudoku puzzle. In the same way that a Sudoku puzzle requires you to place nine unique single-digit numbers on each line of a grid, Molecube requires you to line up one of each color on each side of a cube. # FEATURES - 3D realistic graphics makes you feel playing with real cube. - Swipe the cube with your finger to rotate the layer of cube. Swipe through the blank area to rotate the cube. - You can also tap the Undo button to undo the last action. - Tilt the phone horizontally or vertically to change the viewing angle of the Rubik's Cube. - Two 3D styles: spherical or square (you can change the style at any time during the game). - Zoom in/out the scene; change the scene brightness. - Two visual effect qualities can be selected: * high VFX for realistic 3D graphics while low VFX for power-savings. - Keyboard is provided as well. - Two sizes of molecube: 3x3x3 and 2x2x2 2x2x2 molecube is much easier for beginners. # MoleCube v.s. Rubik's Cube - What is the difference between a Molecube and a Rubik's Cube? Their goal configurations are different: the Molecube wants one ball of each color on each face, while the Rubik's cube wants each face to be all the same color. There are nine colors on the Molecube, but only six on the Rubik's cube. The Sudoku Cube is similar to the MoleCube in that the objective of the Sudoku Cube is to arrange it such that each face contains each number (1 to 9) exactly once. - Is MoleCube harder than a Rubik’s cube? Molecube isn’t meant to be harder or easier, just a different type of challenge. That being said, it does have significantly fewer possible permutations than a 3x3 Rubik’s Cube. It also has 80 possible solutions instead of the traditional 1. Suggestions or questions? Feel free to email: zhaoxiaojian@hotmail.com

About

OpenCube

This app uses your phone's camera to scan and solve various twisty puzzles. It provides step-by-step solutions, learning methods, and a competition timer. Offline functionality ensures privacy and accessibility.

Highlights
  • Camera-based cube scanning
  • Step-by-step 3D solutions
  • Multiple learning methods (Beginner, CFOP, Roux)
  • Competition-style timer
  • Support for 2x2, 4x4, 5x5, Pyraminx, Megaminx
  • Offline functionality
Features
Read full description

Solve your cube and understand every turn. OpenCube is an offline cube solver, learning guide and speedcubing timer. Scan each face with your camera or enter stickers by hand, review the colors and follow an animated 3D solution. SCAN AND SOLVE Review and correct stickers before solving. Solutions are checked against the entered state. Follow turns on a draggable 3D cube, a flat net or a notation list. Camera results depend on lighting and the puzzle; manual correction is always available. LEARN AND PRACTICE Start with the free 3×3 Beginner course. Explore CFOP and Roux with animated examples, explanations and interactive algorithm practice. Try moves on a virtual cube. There are also 2×2 courses and lessons for larger cubes, Pyraminx, Megaminx, one-handed solving and blindfolded techniques. TIME YOUR SOLVES Hold to start, use optional 15-second inspection, apply +2 or DNF penalties and track ao5, ao12 and your best time. Scrambles suit the selected puzzle: random-state for 2×2, 3×3 and Pyraminx, random-move for 4×4 and 5×5, and Pochmann for Megaminx. FREE AND PRO 2×2 and 3×3 solving and timing, the complete 3×3 Beginner course and 2×2 courses are free. Try the first stages of CFOP, Roux and other courses. OpenCube Pro is a single purchase with no subscription. It adds 4×4, 5×5, Pyraminx and Megaminx solving and timing; the remaining advanced course stages; CFOP and Roux method solutions; full history and all-time statistics; case-specific and saved practice scrambles; and alternate color schemes. The purchase price appears in your store's currency. Purchases are managed separately by each store. OFFLINE AND PRIVATE No account, ads or analytics. Puzzle processing and your solve history stay on your device. Purchases and review requests use your platform's store services. Available in English, Arabic, Turkish, French, Spanish and German.

Screenshots

MoleCube 3D4 screens
OpenCube4 screens

Verdict

The call

The clearest difference is rating: OpenCube at 5.0 against MoleCube 3D's 3.7. MoleCube 3D's advantage is in-app purchases (none vs 1) and update cadence (every 5 days vs every 2 weeks). On price, ratings volume, ads and device support 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. OpenCube sells 1 one-off in-app purchase. MoleCube 3D asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OpenCube holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 4 respectively.

UpkeepUpdate frequency

MoleCube 3D ships an update every 5 days, OpenCube every 2 weeks. The most recent releases landed on October 21, 2026 and October 26, 2026 respectively.

Scorecard5 real differences · 5 level
MoleCube 3D versus OpenCube: the parameters behind the verdict, then further details
ParameterMoleCube 3DOpenCube
PriceFreeFree
Rating3.7 (3 ratings)5.0 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings34 — better
Update frequencyEvery 5 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better26.0
Further details — not scored
Size13 MB8 MB
Age rating+44+
Developer小健 赵Meral Software LLC

Customer experience

MoleCube 3D

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

OpenCube

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

MoleCube 3D

No in-app purchases

1 purchases

OpenCube

One-time1
  • OpenCube Pro$1.99

Questions

Is MoleCube 3D free?
MoleCube 3D is free to download, with no in-app purchases.
Is OpenCube free?
OpenCube is free to download, with in-app purchases available.
Which has better reviews, MoleCube 3D or OpenCube?
OpenCube is rated higher. MoleCube 3D averages 3.7 out of 5 from 3 ratings, while OpenCube averages 5.0 from 4 ratings.
Do MoleCube 3D or OpenCube have ads?
Neither MoleCube 3D nor OpenCube shows ads.
Which is updated more often, MoleCube 3D or OpenCube?
MoleCube 3D ships an update every 5 days, and OpenCube every 2 weeks. Most recently, MoleCube 3D was updated on October 21, 2026 and OpenCube on October 26, 2026.

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