Loops: Slitherlink Puzzles

Relaxing logic game · Offline

Free · In‑App Purchases

Now built for iPhone Duo: open it flat and the board fills the screen, bend it like a book and every puzzle gets a page of its own. Close the loop. Loops is Slitherlink — the classic logic puzzle from Japan — built for iPhone and iPad with eight hand-made styles and an original soundtrack of calm music. No ads, no subscription: start free, unlock everything with one purchase. HOW IT WORKS Draw a single loop along the dotted grid. Each number tells you how many of its sides the loop uses. The loop never crosses itself and never branches. That’s the whole rulebook: every puzzle has exactly one solution, and you reach it by logic, not by guessing. NEW IN LOOPS • Pentagons — a fifth shape: 250 puzzles on the Cairo tiling, an irregular lattice that makes familiar patterns feel new. • Eight hand-made styles, each a world of its own with its own paper, ink, sounds and music — washi and vermilion, brush strokes on rice paper, sepia parchment, pure ink, newsprint with blue pencil, Czech folk indigo, sage atelier and carbon with gold. • An original soundtrack of 33 calm pieces — piano, koto, shakuhachi and temple bowls, and music written for each style, from lute and jazz piano to cimbalom and cello. Every style also draws with its own sound: a brush on rice paper, a quill on parchment, a pencil on newsprint, needle and thread on linen. • The Dojo — 14 interactive lessons, from your first zero to master-level reasoning. Watch the rule, then find the move yourself on a real board. • Ranks — climb from 10 kyu to 7 dan. Harder puzzles, clean solves and new shapes are worth more. • Hints that catch mistakes — if a line of yours is wrong, the hint shows you where before anything else. • Widgets for your Home and Lock Screen — today’s puzzle and your streak at a glance. WHAT’S INSIDE • 1,250 puzzles, each with exactly one solution, in five shapes — squares, hexagons, triangles, diamonds and pentagons — and five difficulties, from a five-minute warm-up to Master. • A new daily puzzle, with streaks that forgive one missed day, a gentle reminder and a daily leaderboard. • Draw by dragging. One finger is the pen; hold an edge or switch the pen to mark a cross. Pinch to zoom on the big boards. • Zen mode hides the clock and every button. Just you and the loop. • Your collection: every loop you close stays in the gallery, with badges for streaks, clean solves and Master levels. • Undo and redo, smart crosses, pen colors, sound and haptics, detailed statistics — and iCloud sync between your iPhone and iPad. FREE TO START Download Loops and play 29 career puzzles — squares, hexagons and a first taste of pentagons — 3 daily puzzles, the whole Dojo and two styles. Hints, ranks, zen mode, widgets and the collection are included. No ads, ever. THE FULL GAME — ONE PURCHASE Unlock everything once: all 1,250 puzzles in five shapes, the daily puzzle every day plus the whole archive, all eight styles and every shape we add in the future. No subscription, no ads, no tricks — yours for good, and restorable on all your devices. MADE IN PRAGUE BY ONE PERSON Loops is an independent game, designed and built by a single developer in Prague who loves logic puzzles. No team, no ad networks, no tracking — a puzzle game made the way good puzzle games used to be made. If you enjoy sudoku, nonograms, kakuro or a quiet ten minutes with a pencil, you will feel at home.

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Ratings & Reviews

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Loops 2.1.1 — built for iPhone Duo. • Open it flat: the board fills the screen, with every control in one rail by your thumb. • Bend it like a book: the puzzle on the left page, a notebook on the right — your time, best and average, and hints as notes in the margin. • Bend it like a laptop: the clock and notes stand up to be read; the board and every control lie under your fingers. • Home, Career, the Dojo and every menu open into two pages. • Close it, bend it, open it — the puzzle carries on exactly where it was. • Fixes: a rare crash in one Dojo lesson, safer iCloud syncing of your history, and a smoother finish when the loop closes. Thank you for playing. A short review helps a one-person studio more than anything.

Version 2.1.1

The developer, DAVID GREBEN, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
DAVID GREBEN
Size
106.2 MB
Category
Puzzle
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
Languages
English and 14 more
  • English, Czech, Dutch, French, German, Italian, Japanese, Korean, Polish, Portuguese, Simplified Chinese, Spanish, Traditional Chinese, Ukrainian, Vietnamese
Age Rating
4+
In-App Purchases
Yes
  • Loops Premium (intro) $5.99
  • Loops Premium $9.99
  • Learn More
Copyright
© 2026 David Greben
  • Developer Website
  • Privacy Policy

    • More by DAVID GREBEN

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