Comparison

kubic vs What's inside the box?

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

What's inside the box?

Engage in a series of challenging puzzles to uncover the contents of various boxes. Utilize hints to overcome difficult levels and unlock additional features for an enhanced experience.

Highlights
  • Solve 100+ puzzles
  • Discover box contents
  • Use hint system
  • Premium unlock available
  • Skip level option
Features
Read full description

What's inside the box? A lot of puzzles! Can you solve all 100 and discover what's in the box? Need hints? Use the hint button at the bottom in each level. There are 2 hints for each level. With the premium unlock in-app you will not get ads before the hints and you will get a skip level button after asking the 2 hints in each level. (note: with the premium unlock the skip button will appear AFTER asking the 2 hints in each level) Enjoy! @BartBonte

Screenshots

kubic4 screens
What's inside the box?4 screens

Verdict

The call

kubic and What's inside the box? both sit at 4.4 stars, but that hides the real split: 78% of What's inside the box?'s written reviews are positive against 36% of kubic's. On price, rating, ratings volume and update cadence 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 What's inside the box? 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

On the App Store both sit at effectively the same score — 4.4 for kubic against 4.3 for What's inside the box?. Both are backed by a comparable volume of ratings — 245 and 111 respectively. Written reviews are what separate them: 36% of kubic's written reviews are positive against 78% of What's inside the box?'s.

UpkeepUpdate frequency

kubic ships an update every 2 months, What's inside the box? every 3 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard1 real difference · 9 level
kubic versus What's inside the box?: the parameters behind the verdict, then further details
ParameterkubicWhat's inside the box?
PriceFreeFree
Rating4.4 (245 ratings) — better4.3 (111 ratings)
Positive reviews36.4% of reviews77.7% of reviews — better
Number of ratings245 — better111
Update frequencyEvery 2 months — betterEvery 3 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size383 MB23 MB
Age rating4+12+
DeveloperPixel Envision Ltd.Bart BONTE

Customer experience

kubic

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

What's inside the box?

All ratings111 ratings
Positive80.2%
Neutral7.2%
Negative12.6%
Written reviews112 reviews
Positive77.7%
Neutral12.5%
Negative9.8%

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

What's inside the box?

From 111 App Store ratings

What we love

  • 🧩 Excellent puzzle design with logical solutions
  • 💡 Innovative and creative puzzle mechanics
  • 🎯 Well-balanced difficulty progression
  • 🏆 100 unique levels with variety
  • 👨‍💻 High-quality work from respected developer Bart Bonte

Room to improve

  • 🐛 Progress resets when switching apps or reopening
  • 😤 Certain levels are frustratingly difficult or poorly designed
  • 🔄 Some levels are repetitive or duplicated
  • ❓ Vague hints that don't adequately help stuck players
  • ⏸️ No pause functionality mid-level

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

What's inside the box?

Reported bugs

7 issues
  • Progress lost when switching apps or reopening application
  • Level 43 button unresponsive after pressing question mark
  • Level 7 layer movement not functioning correctly
  • Level 45 resets progress to level 21
  • Screen rendering issues making portions unviewable
Show 2 more
  • Hints not unlocking next level despite correct solution
  • Multiple levels appearing identical or too similar (52/72, 81/88)

Requested features

6 requests
  • Skip button for difficult levels
  • Pause functionality during gameplay
  • Improved hint system with clearer guidance
  • Additional levels beyond 100
  • Better progress save system
Show 1 more
  • Sequel or expansion content

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

What's inside the box?

One-time1
  • premium unlock$2.49

Questions

Is kubic free?
kubic is free to download, with in-app purchases available.
Is What's inside the box? free?
What's inside the box? is free to download, with in-app purchases available.
Which has better reviews, kubic or What's inside the box??
kubic is rated higher. kubic averages 4.4 out of 5 from 245 ratings, while What's inside the box? averages 4.3 from 111 ratings.
Do kubic or What's inside the box? have ads?
Both kubic and What's inside the box? show ads.
Which is updated more often, kubic or What's inside the box??
kubic ships an update every 2 months, and What's inside the box? every 3 months. Most recently, kubic was updated on October 23, 2026 and What's inside the box? on October 24, 2026.

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