Comparison

Within Reason Logic Puzzles vs Logic Islands

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

Head to head
About

Within Reason Logic Puzzles

Engage your mind with logic grid puzzles inspired by Lewis Carroll. This app offers an intuitive drag-and-drop interface to solve mysteries by connecting facts. It also includes trivia-based puzzles requiring general knowledge.

Highlights
  • Logic grid puzzles
  • Drag and drop interface
  • Trivia-based puzzles
  • Daily new puzzles
  • Compete with friends
  • World knowledge challenges
Features
Read full description

Logic puzzles, originally created by Lewis Carroll. Now with a much better interface. No need to check tiny boxes! Drag and drop facts to establish the relationships. With just a few pieces of information, solve the mystery. And, just for fun, some trivia thrown in as well. We include a whole class of puzzles requiring knowledge of the world around us to help find the solution. Do you know all of your state capitals? How about the names of bones in your body? Challenge yourself and compete against friends. 3 new puzzles every day, free for everyone! Terms of Use: https://bridgementor.app/BridgeMentorTermsOfUse.pdf

About

Logic Islands

Engage in handcrafted deduction puzzles that go beyond typical logic games. Explore islands with unique rules, solve daily challenges, and master complex reasoning skills. This game offers a deep intellectual challenge for puzzle enthusiasts.

Highlights
  • Original deduction puzzles
  • Island-based logic challenges
  • Daily new puzzles
  • Leaderboards and streaks
  • Step-by-step hints and explanations
  • Learn propositional logic
Read full description

Logic Islands is a world of handcrafted deduction puzzles, built by a mathematician and a neuroscientist for people who like a real problem. Not logic grids. Not another Sudoku clone. Not pattern-matching dressed up as a brain game. These are original deduction puzzles in the tradition of Raymond Smullyan's knights and knaves logical puzzles: islanders who can only tell the truth or only lie, and your job is to work out who is who from what they say. From there it gets stranger. You reason about what characters know, what they could have said, what the truth would have to be, and what questions you must ask. Every puzzle is made by hand by a mathematician who has spent over a decade inventing them. No AI, not now, not ever. Each one was tested on hundreds of real people and refined until it was exactly hard enough, the progression exactly right. All explanations are handwritten too. Ten islands, each with its own logic You begin on the island of truth-tellers and liars. Beyond it lie nine more, each with its own residents, its own rules, and its own way of bending the truth. Enter a gallery of deceit, weigh the reliability of up to eight witnesses to a single crime, and learn to ask the right questions of the right people, in the right order. The rules are taught through play, the difficulty climbs toward the genuinely mind-bending, and new islands keep arriving. A fresh trio every day Three new puzzles land each morning, separate from the island puzzles: a warmup, a challenge, and a master. Small enough to fit in a coffee break, but stimulating enough to stay with you all day. Keep your streak alive and climb the weekly and all-time leaderboards against everyone solving the same set. Help at every step, never just the answer Being stuck is part of it, but you are never stranded. Professor Logic gives a targeted nudge when you want one and a refresher on the idea in play. Once you solve a puzzle, he walks you through exactly why the answer holds. You come away understanding how to reason your way through even the most complicated problems. Real reasoning, in the shape of a game The skills here are the genuine article: the deductive reasoning used in mathematics and proof, relied on by anyone who has to think clearly under pressure, and tested on the LSAT and GRE. Propositional logic, knights and knaves, strategic questioning, reasoning about what others know, possibility and necessity, and more exotic logics. You'll learn to read AND, OR, XOR, IF-THEN, NOT, and a great deal more, as fluently as you read English. You will not feel like you are studying. You will just get sharper. Who it's for Puzzle solvers who have run out of things that truly challenge them. People who want more depth from their games. Anyone who loves paradoxes, proofs, or that satisfying moment when one detail forces every other piece into place. People who like a good argument and take pride in thinking things through. Mathematical, philosophical, and computing minds. Anyone preparing for the LSAT or GRE, or just looking to improve their logical reasoning skills. And anyone who misses the feeling of working something out entirely on their own, and wants to protect that. Logic Islands is free to download. You get the first island and your first five days of daily trios free, no account required, no ads. When you want the rest, Logic Islands Pro opens every island, every daily puzzle, and every island still to come, plus personal analytics. Think again. Questions, feedback: hello@logicislands.com Report a bug: support@logicislands.com. Press: press@logicislands.com. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the period. Manage in your Apple ID settings. Restore Purchases is available in the profile settings. Terms of Use: https://logicislands.com/terms Privacy Policy: https://logicislands.com/privacy FOLLOW US: https://x.com/LogicIslandsApp

Screenshots

Within Reason Logic Puzzles4 screens
Logic Islands4 screens

Verdict

The call

The clearest difference is review sentiment: Logic Islands at 100% against Within Reason Logic Puzzles's 50%. Logic Islands also leads on rating (5.0 vs 3.6) and update cadence (every 11 days vs every 2 months). On price, ratings volume, ads and in-app purchases 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. Within Reason Logic Puzzles sells 2 in-app purchases, starting at $2.99 per month and Logic Islands sells 3 in-app purchases, starting at $9.00 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Logic Islands holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 14 and 16 respectively. Written reviews point the same way: 50% of Within Reason Logic Puzzles's written reviews are positive against 100% of Logic Islands's.

UpkeepUpdate frequency

Within Reason Logic Puzzles ships an update every 2 months, Logic Islands every 11 days. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
Within Reason Logic Puzzles versus Logic Islands: the parameters behind the verdict, then further details
ParameterWithin Reason Logic PuzzlesLogic Islands
PriceFreeFree
Rating3.6 (14 ratings)5.0 (16 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings1416 — better
Update frequencyEvery 2 monthsEvery 11 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.415.1 — better
Further details — not scored
Size11 MB203 MB
Age rating4+9+
DeveloperEamonn and Ian llcLogic Islands

Customer experience

Within Reason Logic Puzzles

All ratings14 ratings
Positive64.3%
Neutral0.0%
Negative35.7%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Logic Islands

All ratings13 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Within Reason Logic Puzzles

Subscriptions2
  • Monthly Subscription$2.991 Month
  • Annual Subscription$19.991 Year
3 purchases

Logic Islands

Subscriptions2
  • Logic Islands Pro Monthly$9.001 Month
  • Logic Islands Pro Yearly$60.001 Year
One-time1
  • Logic Islands Pro Lifetime$99.00

Questions

Is Within Reason Logic Puzzles free?
Within Reason Logic Puzzles is free to download, with in-app purchases available.
Is Logic Islands free?
Logic Islands is free to download, with in-app purchases available.
Which has better reviews, Within Reason Logic Puzzles or Logic Islands?
Logic Islands is rated higher. Within Reason Logic Puzzles averages 3.6 out of 5 from 14 ratings, while Logic Islands averages 5.0 from 16 ratings.
Do Within Reason Logic Puzzles or Logic Islands have ads?
Neither Within Reason Logic Puzzles nor Logic Islands shows ads.
Which is updated more often, Within Reason Logic Puzzles or Logic Islands?
Within Reason Logic Puzzles ships an update every 2 months, and Logic Islands every 11 days. Most recently, Within Reason Logic Puzzles was updated on October 24, 2026 and Logic Islands on October 24, 2026.

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