Comparison

Number Join vs Nonograms Katana

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

Head to head
About

Number Join

A logic puzzle game where you fill in missing numbers sequentially. Solve puzzles by connecting numbers horizontally, vertically, or diagonally across various difficulty levels. Features include hints, auto-save, and time tracking.

Highlights
  • Fill missing numbers sequentially
  • Horizontal, vertical, and diagonal connections
  • 5 difficulty levels
  • Over 500 levels
  • Check function for wrong numbers
  • Auto-save unfinished levels
  • Record best completion times
Features
Read full description

This game is a logic puzzle with simple rules. Your aim is to fill in the missing numbers, in sequential order, going horizontally, vertically, or diagonally. **** Features **** # Content - 5 difficulty levels - more than 500 levels # Features - "Check" function can highlight wrong numbers - option to enable automatically highlight wrong numbers - Auto-save the process of unfinished levels - Record best completion time for each level # Challenge - Game Center Achievements - Try to complete as many levels as possible

About

Nonograms Katana

Engage in logic puzzles where you fill cells based on numerical clues to reveal hidden pictures. This app offers a vast collection of puzzles, tools for marking cells, and options to create and share your own challenges.

Highlights
  • 1001 nonogram puzzles
  • Create and share custom puzzles
  • Black-and-white and colored puzzles
  • Puzzles sorted by size
  • Hints and undo/redo functionality
  • Cloud save and achievements
Features
Read full description

Nonograms Katana: Sharpen your mind! Nonograms, also known as Hanjie, Griddlers, Picross, Japanese Crosswords, Japanese Puzzles, Pic-a-Pix, "Paint by numbers" and other names, are picture logic puzzles in which cells in a grid must be colored or left blank according to numbers at the side of the grid to reveal a hidden picture. The numbers are a form of discrete tomography that measures how many unbroken lines of filled-in squares there are in any given row or column. For example, a clue of "4 8 3" would mean there are sets of four, eight, and three filled squares, in that order, with at least one blank square between successive groups. To solve a puzzle, one needs to determine which cells will be boxes and which will be empty. Determining which cells are to be left empty (called spaces) is as important as determining which to fill (called boxes). Later in the solving process, the spaces help determine where a clue (continuing block of boxes and a number in the legend) may spread. Solvers usually use a dot or a cross to mark cells they are certain are spaces. It is also important never to guess. Only cells that can be determined by logic should be filled. If guessing, a single error can spread over the entire field and completely ruin the solution. Features: - 1001 nonograms - All puzzles are free - All puzzles tested by computer program and have unique solution - Black-and-white and colored - Nonograms sorted by groups from 5x5 to 50x50 - Download puzzles sent by other users - Create and share your own puzzles - 15 free hints per puzzle - Use crosses, dots and other symbols to mark cells - Auto cross out numbers - Auto fill trivial and completed lines - Auto save; if you stuck you can try another puzzle and come back later - Zoom and smooth scrolling - Lock and zoom number bars - Lock current puzzle state, check assumptions - Customize background - Optional cursor for accurate picking - Undo and redo - Share result pictures - Save game progress to the cloud - Achievements and leaderboards - Screen rotation - Suitable for phones and tablets VIP Features: - No Ads - View Answer - 5 extra hints per puzzle The Guild Expansion: Welcome to the Adventurers Guild! By solving puzzles, you will get loot and experience. You will have weapons that allow you to deal with puzzles much faster. You will be able to complete quests and receive a reward. You will have to rebuild the settlement and collect the lost mosaic piece by piece. The Dungeon Expansion: Game in a game in a game. Isometric turn-based RPG. What adventurer doesn't dream of exploring a dungeon? site: https://nonograms-katana.com facebook: https://www.facebook.com/Nonograms.Katana

Screenshots

Number Join4 screens
Nonograms Katana4 screens

Verdict

The call

The clearest difference is rating: Nonograms Katana at 4.8 against Number Join's 4.2. Nonograms Katana also leads on ads (none vs shown) and ratings volume (6.8K vs 59). On price, review sentiment, 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. Number Join sells 1 one-off in-app purchase and Nonograms Katana sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Nonograms Katana holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Nonograms Katana has 6.8K ratings behind it against 59, so its average is the more settled of the two. Written reviews complicate that: 89% of Number Join's written reviews are positive against 83% of Nonograms Katana's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Number Join ships an update every 5 months, Nonograms Katana every 3 months. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

Scorecard3 real differences · 7 level
Number Join versus Nonograms Katana: the parameters behind the verdict, then further details
ParameterNumber JoinNonograms Katana
PriceFreeFree
Rating4.2 (59 ratings)4.8 (6.8K ratings) — better
Positive reviews88.9% of reviews — better82.9% of reviews
Number of ratings596.8K — better
Update frequencyEvery 5 monthsEvery 3 months — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better14.0
Further details — not scored
Size8 MB27 MB
Age rating4+12+
DeveloperStanley LamUcdevs Interaction DOO

Customer experience

Number Join

All ratings57 ratings
Positive86.0%
Neutral5.3%
Negative8.8%
Written reviews27 reviews
Positive88.9%
Neutral0.0%
Negative11.1%

Nonograms Katana

All ratings6,245 ratings
Positive97.2%
Neutral1.7%
Negative1.1%
Written reviews339 reviews
Positive82.9%
Neutral5.3%
Negative11.8%

Bugs and requests

Number Join

Not enough reviews yet to summarise bugs or requests.

Nonograms Katana

Reported bugs

5 issues
  • Puzzle progress not saving
  • Puzzle images not loading
  • Freezing/crashing on larger puzzles
  • Ads not playing properly
  • Compatibility issues with newer iOS versions

Requested features

7 requests
  • Dark mode option
  • Ability to rearrange/move puzzle pieces
  • Difficulty ratings for puzzles
  • Automatic line/row completion
  • Ability to follow/subscribe to users
Show 2 more
  • Notification system for new puzzles
  • Diagonal line drawing tool

In-app purchases

1 purchases

Number Join

One-time1
  • Upgrade to Full Version$0.99
3 purchases

Nonograms Katana

One-time3
  • 80 Hints$0.99
  • 200 Hints$1.99
  • VIP version$2.99

Questions

Is Number Join free?
Number Join is free to download, with in-app purchases available.
Is Nonograms Katana free?
Nonograms Katana is free to download, with in-app purchases available.
Which has better reviews, Number Join or Nonograms Katana?
Nonograms Katana is rated higher. Number Join averages 4.2 out of 5 from 59 ratings, while Nonograms Katana averages 4.8 from 6.8K ratings.
Do Number Join or Nonograms Katana have ads?
Number Join shows ads; Nonograms Katana does not.
Which is updated more often, Number Join or Nonograms Katana?
Number Join ships an update every 5 months, and Nonograms Katana every 3 months. Most recently, Number Join was updated on October 23, 2026 and Nonograms Katana on October 29, 2026.

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