Difference pairs vs Sort'n Fill
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Difference pairs
Engage in a challenging mistake-finding game with 250 unique puzzles. This app offers a difficult yet fun experience for those seeking a mental workout. It has achieved significant popularity, ranking highly in the iPad game charts.
- 250 challenging puzzles
- Mistake finding game
- Difficult gameplay
- Free to play
- High chart ranking
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The Hardest Mistake in the App Store 250 questions in total It is a fun free mistake finding game. Please download and enjoy. This application has become 3rd overall in iPad division of Japanese app store. Thank you very much.
Sort'n Fill
Engage in a simple yet fun puzzle game where you sort and organize various objects into their designated boxes. This app offers a mentally stimulating experience with clean graphics and smooth animations, perfect for those who enjoy organizing challenges.
- Object sorting and filling
- Clean graphics
- Smooth animations
- Brain training puzzles
- Diverse object types
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As Simple as it can be! Sort'n fill the corrects objects into the specified boxes! If you like Sorting and Organizing then you'll love Sort'n Fill! Key Features: - Clean and Neat Graphics - Nice Animations - Brain Training - Various Type Of Objects
Screenshots
Verdict
The clearest difference is review sentiment: Difference pairs at 94% against Sort'n Fill's 29%. Difference pairs also leads on in-app purchases (none vs 13). Sort'n Fill's advantage is update cadence (fortnightly vs every 4 months) and ratings volume (10K vs 4). On price, ads, monetization model 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
Both are free to download. Sort'n Fill sells 13 one-off in-app purchases. Difference pairs asks for nothing beyond the download.
Sort'n Fill holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Sort'n Fill has 10K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 94% of Difference pairs's written reviews are positive against 29% of Sort'n Fill's, so the app with the better star average is not the one people write more warmly about.
Difference pairs ships an update every 4 months, Sort'n Fill fortnightly. The most recent releases landed on October 18, 2026 and October 19, 2026 respectively.
| Parameter | Difference pairs | Sort'n Fill |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (4 ratings) | 4.6 (10K ratings) — better |
| Positive reviews | 94.4% of reviews — better | 29.3% of reviews |
| Number of ratings | 4 | 10K — better |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 53 MB | 249 MB |
| Age rating | 4+ | 4+ |
| Developer | koikoi.biz | Zplay (Beijing) Info. Tech. Co.,Ltd. |
Customer experience
Difference pairs
Sort'n Fill
Bugs and requests
Difference pairs
Not enough reviews yet to summarise bugs or requests.
Sort'n Fill
Reported bugs
2 issues- Missing items on the board
- Ads still showing up after paying for ad-free version
Requested features
3 requests- More variety of items to sort
- Ability to turn off certain pop-ups
- Better instructions and explanations
In-app purchases
Difference pairs
No in-app purchases
Sort'n Fill
- Starter Pack$1.99
- Coin Pack 1$1.99
- Special Pack$1.99
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- Remove Ads$2.99
- Super Move$2.99
- Unlimited Sale$3.99
- Coin Pack 2$9.99
- Battle Pass$11.99
- Beginner Pack$11.99
- Coin Pack 3$17.99
- Coin Pack 4$34.99
- Coin Pack 5$69.99
- Coin Pack 6$119.99
Questions
Is Difference pairs free?
Is Sort'n Fill free?
Which has better reviews, Difference pairs or Sort'n Fill?
Do Difference pairs or Sort'n Fill have ads?
Which is updated more often, Difference pairs or Sort'n Fill?
Other comparisons
