Comparison

Nonograms Katana vs Rulo

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

Head to head
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

About

Rulo

A math puzzle game designed to enhance your thinking skills by analyzing number relationships in grids. Solve puzzles by hiding numbers to match row and column sums, aiming to become a Master.

Highlights
  • Number grid puzzles
  • Analyze number relationships
  • Improve thinking ability
  • Master level challenges
  • Row and column sum matching
Features
Read full description

Rulo is a simple math puzzle game that helps you improve your thinking skills. You will significantly improve your thinking ability based on analyzing the relationship between objects. Upgrade yourself to the Master to see the change. How to play: You will see circles with random numbers appear in 4x4 or 5x5 grids. The number in the square is the Sum of the corresponding row or column. Based on the sum and the numbers in the row or column, hide the inappropriate numbers. To that end, the sum of the circles is retained by the number in the square of that row or column. Notice the relationship between the sum and the numbers in the row and column. Have fun!

Screenshots

Nonograms Katana4 screens
Rulo4 screens

Verdict

The call

The clearest difference is ratings volume: Nonograms Katana at 6.8K against Rulo's 7. Rulo's advantage is iOS requirement (11.0 vs 14.0). On price, rating, 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. Nonograms Katana sells 3 one-off in-app purchases and Rulo 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 — 4.8 for Nonograms Katana against 4.9 for Rulo. That said, the two scores are not equally well evidenced: Nonograms Katana has 6.8K ratings behind it against 7, so its average is the more settled of the two.

Scorecard2 real differences · 8 level
Nonograms Katana versus Rulo: the parameters behind the verdict, then further details
ParameterNonograms KatanaRulo
PriceFreeFree
Rating4.8 (6.8K ratings)4.9 (7 ratings) — better
Positive reviews82.9% of reviews—
Number of ratings6.8K — better7
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.011.0 — better
Further details — not scored
Size27 MB67 MB
Age rating12+4+
DeveloperUcdevs Interaction DOOTA MINH QUANG

Customer experience

Nonograms Katana

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

Rulo

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and 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

Rulo

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Nonograms Katana

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

Rulo

One-time1
  • 5 Hints$1.99

Questions

Is Nonograms Katana free?
Nonograms Katana is free to download, with in-app purchases available.
Is Rulo free?
Rulo is free to download, with in-app purchases available.
Which has better reviews, Nonograms Katana or Rulo?
Rulo is rated higher. Nonograms Katana averages 4.8 out of 5 from 6.8K ratings, while Rulo averages 4.9 from 7 ratings.
Do Nonograms Katana or Rulo have ads?
Neither Nonograms Katana nor Rulo shows ads.

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