Comparison

Slitherlink vs Flow Link

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

Flow Link

Features
Read full description

The flow puzzles you've played before... were they ever actually hard? Flow Link is built for people who want real puzzles — and this update is our biggest leap yet. 【 ENIGMA MODE — difficulty beyond the limits of this genre 】 For people who truly love solving: • No hints, no solve button — not even the endpoint glow when you drag. Junk-filling is blocked too. Just you and pure logic. • Color Switchers: the two dots you connect aren't the same color anymore. • Ghost Dots: some colors show extra dots, but only two of them connect. Find the decoy. • Portals, Rotors, and boards that mix several mechanics at once. • No linear gates — pick a mechanic, start on any level you like. Beat one and you've earned the right to brag. ※ Enigma access: included with VIP and Ad-Free, or watch one ad per session. 【 FREE PICK — play whatever you feel like 】 A library of levels from every mode, organized by mechanic and board size. No unlock order. ※ Same access as Enigma mode. 【 THE MAIN JOURNEY — free, with zero interstitial ads 】 Pick the style that fits you, across 22,000+ total levels: • Kids: small boards, bright colors, fun for the whole family. • Normal: a relaxed climb through a world map of 6,000+ levels. • Time Attack: the same puzzles, half the time. • Extreme: massive two-floor boards with portals, bombs, keys and arrows — the game physically blocks junk-filling as you drag, and every level is machine-verified to have exactly one solution. No interstitial ads pop up between levels, anywhere on the journey. (Optional rewarded ads exist for bonus rewards — watching one is always your choice.) Ready to find out where you rank? Download and prove it. Flow Link VIP is an optional auto-renewable subscription. VIP Pass Monthly: THB 149 per month Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings after purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://kaisoftthailand.com/privacy

Screenshots

Slitherlink4 screens
Flow Link4 screens

Verdict

The call

The clearest difference is ads: Slitherlink at none against Flow Link's shown. Flow Link's advantage is update cadence (every 2 weeks vs every 4 months). On price, in-app purchases, 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. Slitherlink sells 13 one-off in-app purchases and Flow Link sells 9 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Slitherlink ships an update every 4 months, Flow Link every 2 weeks. The most recent releases landed on October 15, 2026 and September 28, 2026 respectively.

Scorecard2 real differences · 8 level
Slitherlink versus Flow Link: the parameters behind the verdict, then further details
ParameterSlitherlinkFlow Link
PriceFreeFree
Rating4.8 (457 ratings) — better—
Positive reviews89.5% of reviews—
Number of ratings457 — better—
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size7 MB120 MB
Age rating4+4+
DeveloperConceptis Ltd.KAI SOFT COMPANY LIMITED

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

Flow Link

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
9 purchases

Flow Link

Subscriptions1
  • สิทธิ์ VIP รายเดือน$3.991 Month
One-time8
  • ปิดโฆษณา 1 วัน$0.99
  • ปิดโฆษณา 3 วัน$0.99
  • แพ็กเหรียญเล็ก$0.99
Show 5 more
  • ปิดโฆษณา 7 วัน$1.99
  • แพ็กเหรียญกลาง$1.99
  • แพ็กเหรียญใหญ่$4.99
  • แพ็กเหรียญยักษ์$9.99
  • สิทธิ์ Lifetime VIP ตลอดชีพ$12.99

Questions

Is Slitherlink free?
Slitherlink is free to download, with in-app purchases available.
Is Flow Link free?
Flow Link is free to download, with in-app purchases available.
Do Slitherlink or Flow Link have ads?
Flow Link shows ads; Slitherlink does not.
Which is updated more often, Slitherlink or Flow Link?
Slitherlink ships an update every 4 months, and Flow Link every 2 weeks. Most recently, Slitherlink was updated on October 15, 2026 and Flow Link on September 28, 2026.

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