Comparison

Deduce vs Loops

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

Head to head
About

Deduce

This word game challenges players to guess a hidden mystery word using logic and vocabulary skills. It offers adjustable difficulty levels, tracks progress with statistics, and provides definitions for learned words. Players can also share games and earn achievements.

Highlights
  • Guess hidden mystery words
  • Logic and vocabulary challenges
  • Adjustable difficulty levels
  • Game statistics and progress tracking
  • Mystery word definitions
  • Save and share games
  • Game Center integration and achievements
Features
Currently charting
Read full description

Deduce is a fun way to learn and visualize the process of logical deduction. It’s a uniquely challenging game combining logic, vocabulary, and spelling skills (with a small element of luck) played with words. Your goal is to discover a hidden mystery word with as few guesses as possible. Deduce acts as an assistant who enforces the rules, provides hints, keeps track of your progress, collects statistics, manages saved games, and (for Game Center users) awards achievements. Reviewers have said: "One of my favorite games", "Other games get installed-played-uninstalled, but this one stays", "Challenging and addictive", "Very original and lots of fun", "I'm completely hooked", "Hope I can stop playing it soon!" Features: 1. Many thousands of possible games (more than 20,000) 2. Comfort level - Deduce can be as easy or challenging as you like, with optional features to assist your thinking. Play with easier 5 letter words or more difficult 6 letter words. NEVER ANY ADS TO DISTRACT YOU! 3. Game Center integration. Statistical results, scores, and saved games are associated with the active Game Center player. If you are not logged into Game Center, you may supply your own player name for separate game tracking, or play anonymously. If you use Game Center, scores are reported to Classic, Novice, and Puzzle leaderboards. A Champions leaderboard ranks the overall quality of your play over time. Achievements may be earned based on the quality and persistence of your game play. As you earn Deduce achievements discover 50 19th century literary giants of the western world, who were also masters with words. A portrait medallion, with a biography link, is awarded for each achievement -- collect them all! 3. Mystery Word definitions. When you finish a game of Deduce, a definition of the mystery word is provided. Increase your vocabulary as you play more games. Definitions come from’s Apple’s downloadable dictionaries or Wiktionary, whichever is available. 4. Game records. Save your games automatically or selectively. Create beautifully formatted PDFs of your games for sharing or printing. 5. Preferences. Use the Settings App to specify global options for Deduce, such as autosave (which automatically saves a limited or unlimited number of your completed games). 6. Easy sharing with friends or other devices. Find a game really challenging? You can challenge friends to find the same mystery word by sharing a Deduce game number via Airdrop, Messages, or email. Deduce also plays well on a shared device. Each family member can play using their own name or Game Center account with separate saved games, statistics, and (for Game Center users) achievements. 7. A polished user experience with improved marking and simpler game play. Use letter dials or a keyboard to enter your guesses. On an iPhone, enlarge guess list for easier manipulation. Reorder your guesses to see more potential patterns. Having trouble thinking of words? Use the Suggest button! Need advice about your game play? Tap on Sherlock for tips and encouragement. And check out the help info to learn about letter frequencies and common suffixes. 8. Select your favorite photo as a backdrop for playing Deduce, or use one of our two built-in backdrops.

About

Loops

Engage in a daily loop logic puzzle game that sharpens your mind. Enjoy a beautifully crafted, ad-free experience with multiple difficulty levels and offline play. Unlock all content with a single purchase.

Highlights
  • Daily new logic puzzles
  • Five difficulty tiers
  • Hints that teach techniques
  • Ad-free and distraction-free
  • Offline play, no account needed
  • One-time purchase for full unlock
Read full description

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.

Screenshots

Deduce4 screens
Loops4 screens

Verdict

The call

The clearest difference is price: Loops at Free against Deduce's $2.99. Loops also leads on update cadence (every 2 days vs every 4 months) and review sentiment (100% vs 88%). Deduce's advantage is in-app purchases (none vs 2) and chart position (#120 vs unranked). On ads, 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

Loops is free to download; Deduce costs $2.99 up front. Loops sells 2 one-off in-app purchases. Deduce asks for nothing beyond the download.

UpkeepUpdate frequency

Deduce ships an update every 4 months, Loops every 2 days. The most recent releases landed on October 27, 2026 and October 23, 2026 respectively.

Scorecard6 real differences · 5 level
Deduce versus Loops: the parameters behind the verdict, then further details
ParameterDeduceLoops
Price$2.99Free — better
Rating4.7 (3 ratings) — better—
Positive reviews88.5% of reviews100.0% of reviews — better
Number of ratings3 — better—
Update frequencyEvery 4 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#120 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size46 MB101 MB
Age rating4+4+
DeveloperObviously GenuineDAVID GREBEN

Customer experience

Deduce

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews26 reviews
Positive88.5%
Neutral0.0%
Negative11.5%

Loops

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Deduce

No in-app purchases

2 purchases

Loops

One-time2
  • Loops Premium (intro)$5.99
  • Loops Premium$9.99

Questions

Is Deduce free?
Deduce costs $2.99, with no in-app purchases.
Is Loops free?
Loops is free to download, with in-app purchases available.
Do Deduce or Loops have ads?
Neither Deduce nor Loops shows ads.
Which is updated more often, Deduce or Loops?
Deduce ships an update every 4 months, and Loops every 2 days. Most recently, Deduce was updated on October 27, 2026 and Loops on October 23, 2026.

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