Slitherlink vs SixNumbers
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- 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
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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
SixNumbers
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SixNumbers is a modern, beautifully designed take on the classic numbers puzzle (think the 24 Game, or Countdown's numbers round). Combine the numbers on screen using addition, subtraction, multiplication and division to land exactly on the target number. Every move is a choice, every round a fresh puzzle. HOW TO PLAY Tap a number tile, then an operator, then a second tile — the two merge into one result. Keep merging to close in on the target. Negative results and inexact division aren't allowed, and you must make at least one move each round. 8 MODES FOR EVERY MOOD • Easy — a gentle warm-up with small numbers • Medium — balanced difficulty with all four operations • Hard — fewer small numbers, more strategy • Interesting — an unusual challenge using only prime numbers • Strange — subtraction and division only, odd numbers • Genius — a true test of skill with numbers up to three digits • Classic — the number set you know from classic TV numbers rounds • Modern — a smooth, balanced pace Each mode offers 4 difficulty levels to choose from. SCORING & STARS Earn points for accuracy, speed, and efficient solving; collect 1 to 5 stars each round. Stuck? Watch a rewarded ad to earn an undo. DAILY MISSIONS & REWARDS Three fresh missions every day. Complete all three for a bonus, and finish all seven days of the week for a big weekly reward. GLOBAL LEADERBOARD Register with a free nickname — no email or password needed — and see where you rank worldwide and in your country, per mode and overall. TURKISH & ENGLISH The app automatically opens in Turkish or English based on your device language. With its warm, handmade paper-textured look, SixNumbers is equally at home as a quick five-minute break or a deep strategic challenge for puzzle lovers.
Screenshots
Verdict
The clearest difference is in-app purchases: SixNumbers at none against Slitherlink's 13. SixNumbers also leads on iOS requirement (13.0 vs 15.6). On price, ads 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
Both are free to download. Slitherlink sells 13 one-off in-app purchases. SixNumbers asks for nothing beyond the download.
| Parameter | Slitherlink | SixNumbers |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (461 ratings) — better | — |
| Positive reviews | 89.5% of reviews | — |
| Number of ratings | 461 — better | — |
| Update frequency | Every 4 months | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 26 MB |
| Age rating | 4+ | 12+ |
| Developer | Conceptis Ltd. | AHMET MERT TURAN |
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
SixNumbers
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Slitherlink
- Medium Snacks 1$0.99
- Easy Variety 1$1.99
- Easy Variety - Large 1$1.99
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- 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
SixNumbers
No in-app purchases









