Comparison

Logic Grid Puzzles vs Hellfish Parallels

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

Head to head
About

Logic Grid Puzzles

Engage your mind with a collection of unique logic grid puzzles. Progress from beginner to master with increasing difficulty and multiple grid sizes. Utilize smart hints, auto-X, and multi-level undo to enhance your puzzle-solving experience.

Highlights
  • 100 unique logic puzzles
  • Increasing difficulty levels
  • Multiple puzzle sizes
  • Unlimited smart hints
  • Auto-X for faster entry
  • Multi-level undo
  • Error checking
Features
Read full description

Learn and enjoy Logic Puzzles with 100 unique puzzles of increasing difficulty and multiple sizes. Decode written clues & fill in the grid to solve each puzzle. Work your way up from from beginner to master! Use the unlimited Smart Hints to see exactly which clue applies to the current board and why. Start with small 3×4 puzzles and challenge yourself with huge 4×7 cell puzzles. Smart Hints examine your solution so far and explain how to fill in another cell by referencing your current board position and telling you what clue to use next (internet access required). Other features include Auto-X for faster entry and multi-level Undo. These make it easier and quicker to focus on the logic! If you're completely stuck, you have the ability to check the grid for errors. There are never any ads or nags or gimmicks. The app supports iOS iCloud sync and accessibility features, including VoiceOver, Larger Text and Dark Mode. If you run out of puzzles there are multiple "100 packs" of new puzzles available for purchase. These are in the same size & quantity as the original free puzzles: 30 each of 3×4 & 30 3×5, and 10 each of 4×4, 4×5, 4×6 & 4×7. Alternatively, you can purchase an Unlimited Puzzles monthly subscription for $4.99 USD per month (or similar for your country). Subscription payment will be charged to your iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal at the same price as the initial month within 24-hours prior to the end of the current period. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase or using the “Manage Subscriptions” link. There is no free trial. Logic Grid Puzzles’ privacy and terms of use policies: https://eggheadgames.com/legal Email: support@eggheadgames.com Facebook: https://www.facebook.com/EggheadGames Web: https://eggheadgames.com The puzzles are licensed from the popular Puzzle Baron websites.

About

Hellfish Parallels

Features
Read full description

Dive into brain-bending fun with Hellfish Connections! Play endless 4×4 word puzzles—complete with cryptic “Hellfish:” themes, sneaky metaphorical categories, and surprise fill-in-the-blank challenges. Perfect for word nerds and puzzle pros alike, every round is a fresh twist on the classic mystery category game!

Screenshots

Logic Grid Puzzles4 screens
Hellfish Parallels2 screens

Verdict

The call

The clearest difference is in-app purchases: Hellfish Parallels at none against Logic Grid Puzzles's 11. Hellfish Parallels also leads on update cadence (every 5 days vs every 2 weeks). Logic Grid Puzzles's advantage is chart position (#147 vs unranked) and iOS requirement (15.0 vs 18.4). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Logic Grid Puzzles sells 10 in-app purchases, starting at $4.99 per month. Hellfish Parallels asks for nothing beyond the download.

UpkeepUpdate frequency

Logic Grid Puzzles ships an update every 2 weeks, Hellfish Parallels every 5 days. The most recent releases landed on September 27, 2026 and September 8, 2026 respectively.

Scorecard4 real differences · 7 level
Logic Grid Puzzles versus Hellfish Parallels: the parameters behind the verdict, then further details
ParameterLogic Grid PuzzlesHellfish Parallels
PriceFreeFree
Rating4.8 (39K ratings) — better—
Positive reviews85.4% of reviews—
Number of ratings39K — better—
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#147 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.4
Further details — not scored
Size21 MB17 MB
Age rating4+12+
DeveloperEgghead Games LLCWolfe John Maykut

Bugs and requests

Logic Grid Puzzles

Reported bugs

2 issues
  • Puzzle grid freezing/scaling issues on smaller screens
  • Incorrect puzzle solutions or clues

Requested features

4 requests
  • Option to show timer and 'expert' time for each puzzle
  • Ability to mark 'maybe' options in the grid
  • Customizable grid display (e.g. color-coded rows/columns)
  • Puzzle pack options sorted by difficulty level

Hellfish Parallels

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Logic Grid Puzzles

Subscriptions1
  • Unlimited Puzzles Per Month$4.991 Month
One-time9
  • Vol 1, Smart Logic Puzzles$2.99
  • Vol 2, Smart Logic Puzzles$2.99
  • Vol 3, Smart Logic Puzzles$2.99
Show 6 more
  • Vol 4, Smart Logic Puzzles$2.99
  • Vol 5, Smart Logic Puzzles$2.99
  • Vol 6, Smart Logic Puzzles$2.99
  • Vol 7, Smart Logic Puzzles$2.99
  • Vol 8, Smart Logic Puzzles$2.99
  • Vol 9, Smart Logic Puzzles$2.99
None

Hellfish Parallels

No in-app purchases

Questions

Is Logic Grid Puzzles free?
Logic Grid Puzzles is free to download, with in-app purchases available.
Is Hellfish Parallels free?
Hellfish Parallels is free to download, with no in-app purchases.
Do Logic Grid Puzzles or Hellfish Parallels have ads?
Neither Logic Grid Puzzles nor Hellfish Parallels shows ads.
Which is updated more often, Logic Grid Puzzles or Hellfish Parallels?
Logic Grid Puzzles ships an update every 2 weeks, and Hellfish Parallels every 5 days. Most recently, Logic Grid Puzzles was updated on September 27, 2026 and Hellfish Parallels on September 8, 2026.

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