Comparison

Slitherlink vs Akari Puzzle

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

Head to head
About

Slitherlink

Solve logic puzzles by drawing a single loop around clues on a grid. Connect dots to form a continuous line, with no crossings or branches. Offers endless fun and intellectual challenge for puzzle enthusiasts.

Highlights
  • Draw a single continuous loop
  • Surround numbered clues
  • Pure logic, no math required
  • Weekly bonus puzzles
  • Multiple difficulty levels
  • Auto complete clues
  • Highlight link segment
Features
Read full description

Surround each clue with lines to form one single loop! Each puzzle consists of a rectangular lattice of dots with some clues in various places. The object is to connect the dots surrounding each clue so that the number of lines equals the value of the clue and the lines around all clues form one continuous loop with no crossings or branches. Empty squares may be surrounded by any number of lines. Slitherlink are addictive loop-forming puzzles which were invented in Japan. Using pure logic and requiring no math to solve, these fascinating puzzles offer endless fun and intellectual entertainment to puzzle fans of all skills and ages. The game features 2-finger tapping for quick zoom, auto complete clues setting and a link segment highlighting option to help to avoid creating separate loops. To help see the puzzle progress, graphic previews in the puzzle list show the progress of all puzzles in a volume as they are being solved. A Gallery view option provides these previews in a larger format. For more fun, Slitherlink contains no ads and includes a Weekly Bonus section providing an extra free puzzle each week. PUZZLE FEATURES • 200 free Slitherlink puzzles • Extra bonus puzzle published free each week • Multiple difficulty levels from very easy to extremely hard • Grid sizes up to 16x22 • Puzzle library continuously updates with new content • Manually selected, top quality puzzles • Unique solution for each puzzle • Hours of intellectual challenge and fun • Sharpens logic and improves cognitive skills GAMING FEATURES • No ads • Unlimited check puzzle • Unlimited Undo and Redo • Auto complete clues • Highlight link segment • Quick zoom using 2-finger tap • Concurrently playing and saving multiple puzzles • Puzzle filtering, sorting and archiving options • Dark Mode support • Graphic previews showing puzzles progress as they are being solved • Portrait and landscape screen support (iPad only) • Track puzzle solving times • Backup & restore puzzle progress to iCloud ABOUT Slitherlink have also become popular under other names such as Fences, Loop the Loop, Loopy, Suriza, Dotty Dilemma and Number Line. Similar to Sudoku, Kakuro and Hashi, the puzzles are solved using logic alone. All puzzles in this app are produced by Conceptis Ltd. - the leading supplier of logic puzzles to printed and electronic gaming media all over the world. On average, more than 20 million Conceptis puzzles are solved each day in newspapers, magazines, books and online as well as on smartphones and tablets across the world. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.conceptispuzzles.com/index.aspx?uri=info/doc/220

About

Akari Puzzle

A logic puzzle game where players place lightbulbs to illuminate all cells without any bulbs shining on each other. Follow simple rules to solve increasingly complex grid challenges.

Highlights
  • Place lightbulbs to illuminate cells
  • No lightbulbs shine on each other
  • Numbers in black cells indicate adjacent bulbs
  • Simple, logical gameplay
  • Grid-based challenges
Features
Read full description

Akari puzzle is a kind of pencil puzzle where all cells are lit-up by placing lightbulbs and no lightbulbs shine on each other. Rule is very simple. 1. Lightbulbs shine every cell vertically and horizontally until they reach a black cell or the boundary. 2. Numbers in some black cells denote the number of lightbulbs in adjacent cells. 3. Lightbulbs themselves are not lit by other lightbulbs.

Screenshots

Slitherlink4 screens
Akari Puzzle3 screens

Verdict

The call

The clearest difference is in-app purchases: Akari Puzzle at none against Slitherlink's 13. Akari Puzzle also leads on iOS requirement (12.0 vs 15.6). Slitherlink's advantage is ads (none vs shown) and update cadence (every 4 months vs every 29 months). On price, rating and device support 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. Slitherlink sells 13 one-off in-app purchases. Akari Puzzle asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Akari Puzzle holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Slitherlink has 461 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Slitherlink ships an update every 4 months, Akari Puzzle every 29 months. The most recent releases landed on October 26, 2026 and October 6, 2026 respectively.

Scorecard6 real differences · 4 level
Slitherlink versus Akari Puzzle: the parameters behind the verdict, then further details
ParameterSlitherlinkAkari Puzzle
PriceFreeFree
Rating4.8 (461 ratings)5.0 (1 ratings) — better
Positive reviews89.5% of reviews—
Number of ratings461 — better1
Update frequencyEvery 4 months — betterEvery 29 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size7 MB25 MB
Age rating4+4+
DeveloperConceptis Ltd.Yuki Fujimoto

Customer experience

Slitherlink

All ratings457 ratings
Positive96.5%
Neutral2.2%
Negative1.3%
Written reviews171 reviews
Positive89.5%
Neutral7.6%
Negative2.9%

Akari Puzzle

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Slitherlink

Reported bugs

3 issues
  • App not loading properly for some users
  • Freezing issues on login screen
  • Incompatibility with older devices

Requested features

5 requests
  • Add a dark mode option
  • Implement coloring/marking tools for loop segments
  • Provide more free puzzle content
  • Reduce pricing for puzzle packs
  • Add a rewind/undo feature to go back to previous puzzle states

Akari Puzzle

Not enough reviews yet to summarise bugs or requests.

In-app purchases

13 purchases

Slitherlink

One-time13
  • Medium Snacks 1$0.99
  • Easy Variety 1$1.99
  • Easy Variety - Large 1$1.99
Show 10 more
  • Medium Variety 1$1.99
  • Medium Variety - Large 1$1.99
  • Hard Variety 1$1.99
  • Easy Variety 2$1.99
  • Medium Variety 2$1.99
  • Hard Variety 2$1.99
  • Big & Easy 1$1.99
  • Big & Medium 1$1.99
  • Hard Variety - Large 1$1.99
  • Big & Tough 1$1.99
None

Akari Puzzle

No in-app purchases

Questions

Is Slitherlink free?
Slitherlink is free to download, with in-app purchases available.
Is Akari Puzzle free?
Akari Puzzle is free to download, with no in-app purchases.
Which has better reviews, Slitherlink or Akari Puzzle?
Akari Puzzle is rated higher. Slitherlink averages 4.8 out of 5 from 461 ratings, while Akari Puzzle averages 5.0 from 1 ratings.
Do Slitherlink or Akari Puzzle have ads?
Akari Puzzle shows ads; Slitherlink does not.
Which is updated more often, Slitherlink or Akari Puzzle?
Slitherlink ships an update every 4 months, and Akari Puzzle every 29 months. Most recently, Slitherlink was updated on October 26, 2026 and Akari Puzzle on October 6, 2026.

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