Logic Grid Puzzles vs Do [Not] Forget
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- 100 unique logic puzzles
- Increasing difficulty levels
- Multiple puzzle sizes
- Unlimited smart hints
- Auto-X for faster entry
- Multi-level undo
- Error checking
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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.
Do [Not] Forget
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DNF is a retro-styled memory game rendered on a glowing CRT phosphor screen. Each trial, a pattern of cells lights up on a 5x5 grid.Study it. Then recreate it from memory. Sounds simple — until the patterns grow larger and the display time shrinks.
Screenshots
Verdict
The clearest difference is in-app purchases: Do [Not] Forget at none against Logic Grid Puzzles's 11. Do [Not] Forget also leads on update cadence (every 3 days vs every 2 weeks). Logic Grid Puzzles's advantage is chart position (#126 vs unranked). On price, 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
Both are free to download. Logic Grid Puzzles sells 10 in-app purchases, starting at $4.99 per month. Do [Not] Forget asks for nothing beyond the download.
Logic Grid Puzzles ships an update every 2 weeks, Do [Not] Forget every 3 days. The most recent releases landed on October 3, 2026 and September 13, 2026 respectively.
| Parameter | Logic Grid Puzzles | Do [Not] Forget |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (39K ratings) — better | — |
| Positive reviews | 85.4% of reviews | — |
| Number of ratings | 39K — better | — |
| Update frequency | Every 2 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #126 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 21 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Egghead Games LLC | Ilias Rafailidis |
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
Do [Not] Forget
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Logic Grid Puzzles
- Unlimited Puzzles Per Month$4.991 Month
- Vol 1, Smart Logic Puzzles$2.99
- Vol 2, Smart Logic Puzzles$2.99
- Vol 3, Smart Logic Puzzles$2.99
Show 6 moreShow fewer
- 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
Do [Not] Forget
No in-app purchases
Questions
Is Logic Grid Puzzles free?
Is Do [Not] Forget free?
Do Logic Grid Puzzles or Do [Not] Forget have ads?
Which is updated more often, Logic Grid Puzzles or Do [Not] Forget?
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