Comparison

kubic vs QB

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

Head to head
About

kubic

This optical illusion puzzle game challenges players to construct impossible structures inspired by M.C. Escher's art. With a clean design and minimalistic graphics, it offers over 60 mind-bending puzzles across various geometric and spatial themes. Features include layer locking, zoom, and an in-game hint system to aid progression.

Highlights
  • Optical illusion puzzles
  • M.C. Escher inspired designs
  • Geometric and impossible objects
  • Layer locking and manipulation
  • Zoom and view controls
  • In-game hint system
  • Progress syncing via iCloud
Features
Read full description

***** #1 Puzzle Game in over 20 Countries! ***** ***** "This quirky puzzle game bends the limits of space and reality to make you create structures that, in theory, should be impossible to replicate." - Pocket Gamer 8/10 ***** ***** "As soothing as it is challenging, this grown-up puzzler opened our minds. Time flew by as we recreated sculpture after sculpture in increasingly difficult configurations. The game’s 3D graphics invite focus and sharpen problem-solving skills, making it an entertaining brain-builder. M.C. Escher would be impressed by the twisty, physics-defying structures." - App Store Notes ***** kubic is a unique optical illusion puzzle game based on M.C. Escher's art, impossible objects and other geometric designs. The object is to construct the goal configuration from a number of pieces. Presented in a simple, clean design and minimalistic art, kubic is a premium game with over 60 escher-esque puzzles. When you click on a piece, it pops to the front-most layer, and may overlap other pieces. When you combine the pieces, they do not merge. If there are extra pieces, you may hide them behind the others. You can also lock layers and drag pieces without changing their layer order. You can also use two finger pinch to zoom in and out and drag the view for a better control. If you are stuck on a puzzle you can simply skip it and re-visit at a later time. Rest assured, all puzzles can be solved but beware, some puzzles are hard! Just take your time...Tip: It helps to plan ahead and build figures from back to front. If you truly get stuck, there is a in-game hint system. You can use it to get started or even get the whole puzzle solved. Levels divided in 6 groups: • Ocean - "2D" Shapes are basically two-dimensional arrangements. • Desert - "3D" Shapes appear to be three-dimensional, but remember to think in two dimensions. • Mountain - "Convex/Concave" These optical illusions are inspired by Escher's famous "Convex and Concave" lithograph. • Sky - "Up/Down" These optical illusions are inspired by the Penrose Triangle featured in Escher's lithograph "Waterfall”. • Escher - Based on letter designs that spell out MC ESCHER. • Print - Based on the printable magazine version of Convex-Concave puzzles. Kubic is localized and supports 12 languages including English, French, German, Italian, Japanese, Korean, Chinese (simplified), Chinese (traditional), Portuguese, Russian, Spanish, and Turkish Game supports iCloud for progress syncing between devices. Convex Concave puzzles from the Heaven and Earth game are included with permission. The puzzles were designed by Scott Kim, Puzzlemaster (scottkim.com), and the Heaven & Earth team. Enjoy!

About

QB

Navigate a challenging labyrinth as a cube, solving puzzles with innovative, direction-dependent mechanics. Discover new cube types, each with unique properties, as you progress through over 80 levels. Master strategic thinking to earn stars and unlock a demanding Challenge Mode.

Highlights
  • Labyrinth puzzle in isometric 3D
  • Innovative, direction-dependent gameplay
  • Over 10 colored cubes with individual mechanics
  • 80 levels unlocked via stars
  • Challenge Mode
  • iCloud synchronization
Features
Read full description

„Nominated for Best Mobile Game at German Computergames Award 2018" „Nominated for Best Mobile Game at German Developer Award 2018" **** Immerse yourself in the challenging world of QB - A Cube's Tale, a labyrinth puzzle game featuring innovative gameplay that will put your strategic thinking to the test. **** FREEMIUN The first 20 levels of QB - a cube's tale are now free to play. If you enjoy the game feel free to buy the full version and puzzle throw 80+ tricky levels. ---- In QB - a cube's tale, you roll through a total of 80 levels to reach each of the final black cubes. Over the course of the game, new cubes are introduced, each with their own mechanic, which make your journey more difficult. The trick of these colored cubes is: It depends on which direction you enter them. For example, one destroys the field in which you are moving. And before you know it, the goal is unattainable and the level starts again. But do not worry, you can play each level as many times as you like. For example, to find the perfect way, because then up to 3 stars are waiting for you as a reward. With the collected stars new levels are unlocked. So you can skip a level if you have been particularly successful in another. If you have collected at least 190 stars, it gets tricky: Because then you can enter the "Challenge Mode", where you have to solve a number of levels with just a single attempt. Here, your skills in 4 stages with 4 levels of difficulty will be put to the test.   Of course, your progress will be saved in the iCloud so you can continue playing on all your devices. Features: • Labyrinth puzzle in isometric 3D • innovative, direction-dependent gameplay • more than 10 colored cubes with individual mechanics • 80 levels that can be unlocked via collected stars • Challenge Mode • iCloud synchronization QB - a cube's tale is only compatible with devices that have iOS 9 or higher.

Screenshots

kubic4 screens
QB4 screens

Verdict

The call

The clearest difference is review sentiment: QB at 91% against kubic's 36%. QB also leads on ads (none vs shown) and rating (4.8 vs 4.4). On price, ratings volume, update cadence and in-app purchases 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. kubic sells 5 one-off in-app purchases and QB sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

QB holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 245 and 293 respectively. Written reviews point the same way: 36% of kubic's written reviews are positive against 91% of QB's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 18, 2026 and October 12, 2026 respectively.

Scorecard4 real differences · 6 level
kubic versus QB: the parameters behind the verdict, then further details
ParameterkubicQB
PriceFreeFree
Rating4.4 (245 ratings)4.8 (293 ratings) — better
Positive reviews36.4% of reviews91.3% of reviews — better
Number of ratings245293 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.011.0 — better
Further details — not scored
Size383 MB96 MB
Age rating4+4+
DeveloperPixel Envision Ltd.Stephan Goebel

Customer experience

kubic

All ratings245 ratings
Positive82.9%
Neutral6.5%
Negative10.6%
Written reviews33 reviews
Positive36.4%
Neutral15.2%
Negative48.5%

QB

All ratings293 ratings
Positive96.9%
Neutral1.7%
Negative1.4%
Written reviews69 reviews
Positive91.3%
Neutral2.9%
Negative5.8%

User reviews

kubic

From 245 App Store ratings

What we love

  • 💡 Original and clever puzzles
  • 🧠 Mind-bending challenges
  • 👍 Fun and engaging gameplay
  • ✨ Well-realized game concept
  • 🤔 Puzzles make you think

Room to improve

  • 😠 Frustrating tile placement
  • 📉 Steep difficulty curve
  • 💸 Excessive and intrusive ads
  • 😩 Stressful user experience
  • ⚠️ Ads interrupt gameplay

QB

From 293 App Store ratings

What we love

  • 🧩 Excellent puzzle design and level progression
  • 🎨 Minimalist, elegant visual design
  • 😌 Relaxing and stress-relieving gameplay
  • ⚡ Smooth, responsive controls and performance
  • 🎯 No time pressure or racing mechanics

Room to improve

  • 🐛 Game freezes after completing levels
  • 🔐 Purchase verification lost after progress reset
  • 🚫 Levels locked despite full version purchase
  • 📵 Unresponsive developer support
  • 🎮 Inconsistent swipe control sensitivity

Bugs and requests

kubic

Reported bugs

5 issues
  • Tiles not sticking correctly
  • App won't launch offline
  • App won't load/crashes on launch
  • In-app purchase attempts forced
  • Bug with in-app purchase activation

Requested features

5 requests
  • Fix tile placement issues
  • Improve difficulty curve
  • Option to rotate puzzles
  • Option to lock in pieces
  • Dark mode for night play

QB

Reported bugs

8 issues
  • Game stuck at level 30, cannot progress to level 31
  • Levels remain locked after purchasing full version
  • Challenge levels malfunction after resetting progress
  • Game freezes on level completion with inactive play button
  • Crash on Made with Unity splash screen
Show 3 more
  • Progress reset causes purchase verification loss
  • Swipe controls overshoot or miss single-square movements
  • Unresponsive developer communication regarding issues

Requested features

8 requests
  • Undo/last move button
  • Additional levels beyond 80
  • Landscape mode for tablets
  • Level editor or custom level creation
  • Move counter visibility after earning stars
Show 3 more
  • Control sensitivity adjustment
  • Better developer support/contact options
  • More free levels in demo version

In-app purchases

5 purchases

kubic

One-time5
  • 10 Hints$0.99
  • No Ads$1.99
  • 25 Hints$1.99
Show 2 more
  • 50 Hints$2.99
  • 100 Hints$3.99
1 purchases

QB

One-time1
  • Unlock Full Game$3.99

Questions

Is kubic free?
kubic is free to download, with in-app purchases available.
Is QB free?
QB is free to download, with in-app purchases available.
Which has better reviews, kubic or QB?
QB is rated higher. kubic averages 4.4 out of 5 from 245 ratings, while QB averages 4.8 from 293 ratings.
Do kubic or QB have ads?
kubic shows ads; QB does not.
Which is updated more often, kubic or QB?
kubic ships an update every 2 months, and QB every 2 months. Most recently, kubic was updated on October 18, 2026 and QB on October 12, 2026.

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