Sky Castle vs GridSwan (Nonogram Puzzles)
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Sky Castle
Embark on a puzzle-solving adventure to reach a heavenly castle. Enjoy hundreds of logic puzzles with beautiful scenery and a convenient interface. Features include hints, auto-save, and one-handed mode for on-the-go play.
- Hundreds of puzzle games
- Color dot design
- Detailed puzzle logic check
- Auto-save functionality
- Multiple difficulty levels
- Convenient touch interface
- One-handed mode
Read full descriptionHide full description
Complete your journey to the amazing Castle of Heaven by solving the puzzle. A fantastic journey to find the castle in the sky you first saw when you were young. See the beautiful scenery of the sea, mountains and valleys on your journey to the castle. Solve the puzzles and complete the journey to your wonderful destination. *Special features* - Hundreds of puzzle games are available. - Great color dot design to match the map’s themes. - Detailed puzzle logic check. - Auto-save for puzzles in play. - Various level of difficulty (5x5, 10x10, 15x15, 20x20) - Convenient interface using touch & pad simultaneously. - Various plays available through single map and big map. - Hint function. - Provides a variety of functions for user convenience (auto answer check, Undo / Redo) - Zoom-in, zoom-out and move function using two fingers. - One-handed mode support for using in public/crowded places. License confirmation file BGM--- Zen Yoga - Music by Manuel Ochoa / Melody Loops Dreamy Dreamland - Music by AG Music / Melody Loops Just A Little Hope - Music by AG Music / Melody Loops
GridSwan (Nonogram Puzzles)
Solve logic puzzles by filling in cells based on number clues to reveal hidden images. Explore various puzzle types, including black & white, colored, and triangle grids. Design and share your own puzzles with others.
- Thousands of puzzles with updates
- Supports standard, colored, triangle, and multi griddlers
- Advanced UI controls for easy solving
- Design and share custom puzzles
- Backup and restore solutions
Read full descriptionHide full description
GridSwan is a powerful nonogram puzzle app for solving logic puzzles, also known as griddlers, hanjie, picross, Japanese crosswords, kare karalamaca, cryptopics, or pic-a-pix. Use number clues to reveal hidden pixel-art images on the grid. Enjoy thousands of free nonogram puzzles, multiple puzzle types, smart solving tools, and regularly added new puzzles. FEATURES: • Thousands of free nonogram puzzles • New puzzles added regularly • Standard black-and-white, colored, triangle, and multi puzzles • Smooth controls for large and complex puzzles: Zoom, scroll, multi-cell selection, undo, and redo • Checkpoints to try different solving paths and backtrack when needed • Cloud backup and restore across devices • Create your own puzzles by drawing, importing images, or generating them from text with AI • Share your puzzles with friends or publish them for other players NOTES: • Please use the Feedback menu to report problems so we can receive your device details and help you better. • Number clues are only there to help you. They are not part of the actual puzzle solution. • To publish your own puzzles, share them and choose Publish. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.puzzlehouseapps.com/privacy_policies/gridswan
Screenshots
Verdict
The clearest difference is review sentiment: Sky Castle at 83% against GridSwan (Nonogram Puzzles)'s 35%. Sky Castle also leads on rating (4.9 vs 4.4) and iOS requirement (11.0 vs 17.0). GridSwan (Nonogram Puzzles)'s advantage is update cadence (every 4 days vs every 3 months) and ratings volume (134 vs 27). On price, ads, in-app purchases and monetization model 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. Sky Castle sells 1 one-off in-app purchase and GridSwan (Nonogram Puzzles) sells 11 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.
Sky Castle holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 27 and 134 respectively. Written reviews point the same way: 83% of Sky Castle's written reviews are positive against 35% of GridSwan (Nonogram Puzzles)'s.
Sky Castle ships an update every 3 months, GridSwan (Nonogram Puzzles) every 4 days. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.
| Parameter | Sky Castle | GridSwan (Nonogram Puzzles) |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (27 ratings) — better | 4.4 (134 ratings) |
| Positive reviews | 82.8% of reviews — better | 34.8% of reviews |
| Number of ratings | 27 | 134 — better |
| Update frequency | Every 3 months | Every 4 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 110 MB | 217 MB |
| Age rating | 4+ | 9+ |
| Developer | KWANG YEOUL YOO | ALI YILDIZ-PUZZLEHOUSEAPPS |
Customer experience
Sky Castle
GridSwan (Nonogram Puzzles)
Bugs and requests
Sky Castle
Reported bugs
11 issues- Crashes frequently
- Progress not saved on crashes
- Puzzles not completing after filling
- Buttons not working correctly (e.g., 'tweezer' bug)
- Occasional duplicate solutions/ambiguous puzzles
Show 6 moreShow fewer
- Ads still appear after paying for ad-free
- App closes unexpectedly
- Bug where filling a square disappears
- Bug where clicking wrong spot doesn't show error
- Bug where hearts disappear without action
- Bug with 7th level 'tweezer'
Requested features
8 requests- More levels/content
- Account linking (Facebook/Google) for progress sync
- Option to reset progress
- Improve button placement for larger puzzles
- Better translation for instructions
Show 3 moreShow fewer
- Add more puzzles to the list
- Make screen larger or puzzles smaller
- Add a back button
GridSwan (Nonogram Puzzles)
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sky Castle
- remove ad$2.99
GridSwan (Nonogram Puzzles)
- 1 Month$7.991 Month
- 6 Months$33.996 Months
- 1 Year$59.991 Year
- 5 Images$1.29
- Enable Checkpoint$1.49
- 10 Tips$1.99
Show 5 moreShow fewer
- 25 Images$3.99
- 50 Tips$7.99
- 50 Images$8.99
- 100 images$9.99
- 100 Tips$11.99
Questions
Is Sky Castle free?
Is GridSwan (Nonogram Puzzles) free?
Which has better reviews, Sky Castle or GridSwan (Nonogram Puzzles)?
Do Sky Castle or GridSwan (Nonogram Puzzles) have ads?
Which is updated more often, Sky Castle or GridSwan (Nonogram Puzzles)?
Other comparisons















