Comparison

kubic vs Griddie Islands

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

Griddie Islands

Place quirky beings on tiny islands to attract fleas that produce money. Merge beings to discover higher levels and increase production in this lively idle merger game. Explore over 50 unique levels.

Highlights
  • Place beings on islands
  • Fleas produce money
  • Merge beings to level up
  • Discover 50+ levels
  • Idle production mechanics
Features
Read full description

Welcome to the world of Griddies! A world where tiny islands are inhabited by even tinier fleas and quirky beings called Griddies! Place griddies on the islands and watch as the fleas start to jump around in excitement and produce money! Use it to buy more griddies to attract more fleas. Same-level Griddies can also be merged into higher level ones, and the higher the level the more they produce! Merge every Griddie to discover the 50+ levels, each with its own look and personality. Merge, level up, and try to keep the islands filled in this lively idle merger!

Screenshots

kubic4 screens
Griddie Islands4 screens

Verdict

The call

The clearest difference is review sentiment: Griddie Islands at 68% against kubic's 39%. Griddie Islands also leads on rating (4.7 vs 4.4) and ratings volume (1.1K vs 245). On price, update cadence, ads 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 Griddie Islands sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Griddie Islands holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 245 and 1.1K respectively. Written reviews point the same way: 39% of kubic's written reviews are positive against 68% of Griddie Islands's.

UpkeepUpdate frequency

kubic ships an update every 2 months, Griddie Islands monthly. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

Scorecard3 real differences · 7 level
kubic versus Griddie Islands: the parameters behind the verdict, then further details
ParameterkubicGriddie Islands
PriceFreeFree
Rating4.4 (245 ratings)4.7 (1.1K ratings) — better
Positive reviews38.9% of reviews68.2% of reviews — better
Number of ratings2451.1K — better
Update frequencyEvery 2 monthsMonthly — better
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 MB179 MB
Age rating4+4+
DeveloperPixel Envision Ltd.Pomelo Games

Customer experience

kubic

All ratings245 ratings
Positive82.9%
Neutral6.5%
Negative10.6%
Written reviews36 reviews
Positive38.9%
Neutral16.7%
Negative44.4%

Griddie Islands

All ratings1,101 ratings
Positive95.3%
Neutral2.3%
Negative2.5%
Written reviews129 reviews
Positive68.2%
Neutral10.1%
Negative21.7%

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

Griddie Islands

From 1.1K App Store ratings

What we love

  • 💫 Charming and clever design
  • 🎨 Unique and fun Griddie designs
  • 👍 Simple and easy to pick up
  • 🕰️ Relaxing and addictive gameplay
  • 💰 No excessive monetization

Room to improve

  • 🐢 Slow progression after early levels
  • 🔁 Repetitive Griddie designs after level 50
  • 🔋 High battery consumption
  • 🔍 Difficulty merging Griddies
  • 📺 Inconsistent ad rewards

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

Griddie Islands

Reported bugs

3 issues
  • Screen going black when placing Griddies
  • Inventory getting stuck with no way to clear
  • Inconsistent in-app purchase functionality

Requested features

5 requests
  • More islands and Griddie designs
  • Prestige system or other progression mechanics
  • Option to sell or discard unwanted Griddies
  • Ability to rotate Griddies
  • In-game notes or planning tools

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
6 purchases

Griddie Islands

One-time6
  • Cubes 10 pack2 variants$0.99
  • Cubes 60 pack2 variants$4.99
  • Cubes 200 pack$9.99
Show 3 more
  • Cubes 600 pack$19.99
  • Cubes 2100 pack$49.99
  • Cubes 5800 pack$99.99

Questions

Is kubic free?
kubic is free to download, with in-app purchases available.
Is Griddie Islands free?
Griddie Islands is free to download, with in-app purchases available.
Which has better reviews, kubic or Griddie Islands?
Griddie Islands is rated higher. kubic averages 4.4 out of 5 from 245 ratings, while Griddie Islands averages 4.7 from 1.1K ratings.
Do kubic or Griddie Islands have ads?
Both kubic and Griddie Islands show ads.
Which is updated more often, kubic or Griddie Islands?
kubic ships an update every 2 months, and Griddie Islands monthly. Most recently, kubic was updated on November 2, 2026 and Griddie Islands on November 6, 2026.

Other comparisons