Comparison

Hidden Blocks vs Number Stack

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

Head to head
About

Hidden Blocks

Features
Read full description

How many blocks? Look again. Some blocks are in plain sight. Others hide behind the stack. HIDDEN BLOCKS is a 3D block-counting logic puzzle where the real challenge is figuring out what you can't see. Study the stack, picture the hidden layers, and choose your answer. Simple to understand. Surprisingly tricky to solve. ▣ TWO MODES. TWO WAYS TO THINK. ● Count All Blocks Work out the total number of blocks, including the ones hidden from view. Every layer counts. ● Find Hidden Blocks Count only the blocks you can't see. Look beyond the visible faces and imagine what completes the stack. ▣ SMALL STACKS. BIG AHA MOMENTS. Start with simple shapes and progress to trickier, multi-layer structures. Use spatial reasoning to work out each answer. That satisfying moment when the whole stack makes sense? That's the fun. ▣ A FRESH PUZZLE EVERY DAY Daily Blocks gives you a new challenge each day. Take on the same daily puzzle as other players and see how your solve time compares. ▣ JUST FEEL LIKE A PUZZLE? Practice serves up a random puzzle each time. No stars, records, or rankings. Warm up before a stage or enjoy another little challenge. ▣ HOW FAR CAN YOU GO? Solve within the time limit, earn stars, and keep moving through the stages. Compare your stage progress with players around the world on the global leaderboard. ▣ A NOTEBOOK FULL OF PERSONALITY Warm paper, blue-ink answer marks, and three playful block companions give each challenge a little character. Clean puzzle layouts keep the focus on the blocks, while the Cubie trio brings the celebrations. Enjoy logic puzzles, visual brain teasers, or number challenges? Discover a different kind of block puzzle: count the stack and imagine what lies out of sight. ▣ WHERE THE IDEA CAME FROM Counting stacked unit cubes is a classic spatial reasoning exercise found in math curricula around the world — Common Core in the US, Singapore Math, the UK National Curriculum, and more. It trains the same 3D thinking that engineers, architects, and pilots use every day. HIDDEN BLOCKS takes that proven concept off the classroom page and turns it into a competitive daily brain game. There's more to every stack than meets the eye. #brain_training #spatial_reasoning #block_puzzle #logic_game #unit_cubes #3D_thinking #IQ #math_puzzle #puzzle_game #brain_game #hidden_blocks #casual_game #mind_game #focus #cube #counting #visual_puzzle #logic_puzzle #mental_training #block_counting

About

Number Stack

A relaxing puzzle game where you merge hexagonal number blocks to create larger numbers and clear the board. Plan your placements strategically to manage space and achieve satisfying merge chains.

Highlights
  • Merge hexa numbers
  • Clear the board
  • Build bigger numbers
  • Stack with a plan
  • Hexagon block puzzle
  • Satisfying merge chains
  • Use power-ups
Features
Read full description

A relaxing number puzzle where you merge hexa blocks, build bigger numbers, and clear the board. Number Stack - Clear Hexa combines number matching, stacking, and merging on a colorful hexagon board. Match equal numbers, create bigger blocks, and plan your placements to keep the board clear. MERGE HEXA NUMBERS Place number blocks on the board and look for matching values. When equal numbers meet, they merge into a bigger number. Keep useful numbers close, create new combinations, and look for opportunities to make one move lead into the next. The bigger your numbers become, the more carefully you need to manage the space around them. CLEAR THE BOARD Your goal is simple: clear the blocks and keep the board under control. Every placement changes the board. A move that creates a merge now can also affect the space you need for your next block, so think ahead before committing to a placement. A well-planned merge can open space and give you another chance to continue the stack. BUILD BIGGER NUMBERS Start with smaller values and combine them into larger ones. Watch your numbers grow as matching blocks merge. Look for efficient combinations instead of making every possible merge immediately. Sometimes the best move is the one that keeps more options open. STACK WITH A PLAN Every block takes up valuable space. As the stack grows, placement becomes more important. Keep useful numbers together, avoid blocking future combinations, and leave room for the next blocks. The puzzle is easy to learn, but finding the cleanest sequence of moves takes planning. HEXAGON BLOCK PUZZLE The hexa board gives the number puzzle a distinctive way to arrange and connect blocks. Colorful hexagon tiles make numbers easy to read while keeping the board clean and focused on the puzzle. SATISFYING MERGE CHAINS One good match can create another opportunity. Set up your numbers carefully and watch a successful merge open space for the next move. Chain reactions turn a simple number match into a satisfying sequence. CLEAR EVERY LEVEL Progress through levels and solve new boards as the challenge grows. Each board asks you to manage your space, find useful matches, and decide where the next number should go. Take your time and make each placement count. USE POWER-UPS When the board becomes difficult, power-ups can help you create new opportunities. Use them when a crowded position is blocking your next merge or when you need to open space and regain control of the board. EASY TO LEARN, HARDER TO MASTER The core rules are simple: Match numbers. Merge blocks. Build bigger numbers. Clear the board. The challenge comes from planning ahead and managing the space on your hexa board. Number Stack - Clear Hexa is designed for quick puzzle sessions, but the growing stack gives you plenty of reasons to think about your next move. WHY PLAY NUMBER STACK - CLEAR HEXA? • Number merge puzzle gameplay • Hexagon number blocks • Match and merge equal numbers • Build bigger number blocks • Clear-the-board objectives • Strategic stacking and placement • Satisfying merge chains • Helpful power-ups • Level-based progression • Simple, easy-to-learn controls • Relaxing casual puzzle experience If you enjoy number puzzles, merge games, hexa block puzzles, block puzzles, brain games, or 2048-style number progression, try Number Stack - Clear Hexa. Merge the numbers. Manage the stack. Clear the board.

Screenshots

Hidden Blocks4 screens
Number Stack4 screens

Verdict

The call

The clearest difference is in-app purchases: Number Stack at none against Hidden Blocks's 8. Number Stack also leads on update cadence (every 2 days vs weekly). On price, ads, device support and iOS requirement 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. Hidden Blocks sells 8 one-off in-app purchases. Number Stack asks for nothing beyond the download.

UpkeepUpdate frequency

Hidden Blocks ships an update weekly, Number Stack every 2 days. The most recent releases landed on October 17, 2026 and October 15, 2026 respectively.

Scorecard2 real differences · 8 level
Hidden Blocks versus Number Stack: the parameters behind the verdict, then further details
ParameterHidden BlocksNumber Stack
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyWeeklyEvery 2 days — better
AdsYesYes
In-app purchasesYesNo — better
Monetization—Ad-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size89 MB58 MB
Age rating4+4+
DeveloperLogan LandSOUCEAN

In-app purchases

8 purchases

Hidden Blocks

One-time8
  • 10 Gems$0.99
  • 20 Gems$1.99
  • Unlimited Play · 3 Hours$2.99
Show 5 more
  • 50 Gems$4.99
  • Unlimited Play · 24 Hours$6.99
  • 125 Gems$9.99
  • 250 Gems$19.99
  • 700 Gems$49.99
None

Number Stack

No in-app purchases

Questions

Is Hidden Blocks free?
Hidden Blocks is free to download, with in-app purchases available.
Is Number Stack free?
Number Stack is free to download, with no in-app purchases.
Do Hidden Blocks or Number Stack have ads?
Both Hidden Blocks and Number Stack show ads.
Which is updated more often, Hidden Blocks or Number Stack?
Hidden Blocks ships an update weekly, and Number Stack every 2 days. Most recently, Hidden Blocks was updated on October 17, 2026 and Number Stack on October 15, 2026.

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