Link! vs KaijiSoji
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Link!
Connect identical numbers by drawing paths that fill the entire grid without crossing. Solve over 1800 puzzles across six difficulty levels. Undo moves or clear the board to explore different solutions.
- Connect identical numbers
- Fill the entire grid
- Paths cannot cross
- 1800+ puzzles
- Six difficulty levels
- Undo moves
- Clear board
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Connect matching numbers with paths and fill the whole grid. How to play • Connect each pair of matching numbers. • Paths cannot cross or branch. • Fill every cell to complete the puzzle. • Tap a number to clear its path. Choose from six difficulty levels and 1800 puzzles. Undo a move or clear the board whenever you want to try another route. Your completed puzzles are saved on your device. This software includes work distributed under the Apache License 2.0. https://www.apache.org/licenses/LICENSE-2.0
KaijiSoji
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Kaiji-Soji is a wordplay game that explores how humans and AI understand written characters by breaking and creating kanji. By interacting with characters that appear in everyday life, you can experience the structure of kanji and the subtle differences between human perception and AI-based recognition. ■ Collect Kanji Point your camera at kanji found on street signs, books, or handwritten notes. Recognized characters appear in the in-game plaza, turning familiar text from daily life into objects of play. ■ Kaiji (Deconstruction) Gradually erase strokes from collected kanji using your finger. After each change, a character recognition AI evaluates whether the kanji is still readable. How much can a character be distorted before it stops being recognized? What visual cues does AI rely on, and how does that differ from human intuition? You can experience these differences directly through play. ■ Soji (Creation) Create a new single kanji that represents the meaning of a given two-character word. By balancing shape, radicals, and structure, you test whether your creation successfully conveys meaning to others. Fewer strokes result in higher scores, encouraging simplicity and clarity. ■ Records and Growth Your results are saved as scores, and flowers bloom in the plaza as you play. The plaza itself becomes a visual record of your exploration of characters and meaning. Optimized for iPad: enjoy a comfortable experience on a larger screen.
Screenshots
Verdict
The clearest difference is ads: KaijiSoji at none against Link!'s shown. On price, update cadence, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.
| Parameter | Link! | KaijiSoji |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (24 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 24 — better | — |
| Update frequency | Every 4 months | Every 4 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 9 MB | 361 MB |
| Age rating | 4+ | 4+ |
| Developer | Shogo Yoshida | Toshiro Otsuka |
In-app purchases
Link!
No in-app purchases
KaijiSoji
No in-app purchases









