# Paper Corners: Shakashaka — Calm geometric logic puzzles

> Calm geometric logic puzzles (iPhone/iPad app by Neeraj Aggarwal.)

- Source: https://appshunter.io/ios/app/paper-corners-shakashaka/id6815373665 (this page in markdown: same URL + `.md`)
- Developer: [Neeraj Aggarwal](https://appshunter.io/developer/1877631231)
- Category: Games, Casual, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: American English, Arabic, Bangla, Catalan, Croatian, Czech, Danish, Dutch, Finnish, Canadian French and 34 more
- Released: 2026-09-28
- Data updated: 2026-10-04

## What is Paper Corners?

Paper Corners is a Shakashaka logic puzzle: place black triangles in a grid until every white region forms a rectangle. Some rectangles sit straight; others tilt at 45 degrees. The numbered squares tell you how many neighboring squares need triangles.

Solve 90 original pages in nine chapters. Start with small boards, then work through larger pages up to 8 × 8. Choose a page by difficulty or follow the chapters in order.

A short introduction teaches the rules. Four optional technique lessons let you practice triangle clues, white squares, and rectangle edges. If you get stuck, a hint marks a cell and explains the deduction. Undo and redo let you revisit any move.

Play a daily page or choose an earlier date from the daily archive. An unfinished daily page stays available after midnight.

Keep your finished pages in a composition library, with the white rectangles traced in indigo. Mark favorites, share an image, export printable sheets, or send a playable page link to a friend.

Play offline on iPhone and iPad, without timers, lives, scores, ads, or purchases. The paper-and-ink design supports light and dark appearance, larger text, VoiceOver, Reduce Motion, and Increase Contrast.

Paper Corners is independent of Nikoli.

## Is Paper Corners safe?

Not enough ratings yet to assess Paper Corners.

## Is Paper Corners legit?

Paper Corners: Shakashaka appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Paper Corners is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 1.2 — 2026-10-02

- Adds 40 pages across four new chapters, bringing the collection to 90 pages.
- Adds four short technique lessons for triangle clues, white squares, and straight and tilted rectangles.
- Adds a daily archive and a difficulty picker for the collection.
- Adds favorites, printable sheets, and playable page links to your finished compositions.
- Improves board response, saved progress recovery, and light and dark appearance.

### 1.1 — 2026-09-30

- Adds 46 languages
- Fixes the completion sheet appearing after undoing a solve or leaving the page
- Performance & reliability improvements

### 1.0 — 2026-09-29

No release notes.

## More apps by Neeraj Aggarwal

- [LocoPoko: Poker Chip Tracker](https://appshunter.io/ios/app/locopoko-poker-chip-tracker/id6759246398)
- [Mahjong Mind: Learn & Play](https://appshunter.io/ios/app/mahjong-mind-learn-and-play/id6776985264)
- [Double Down: Blackjack Trainer](https://appshunter.io/ios/app/double-down-blackjack-trainer/id6777006186)
- [Tether Tantrum](https://appshunter.io/ios/app/tether-tantrum/id6777026828)
- [Pass Party: One-Phone Games](https://appshunter.io/ios/app/pass-party-one-phone-games/id6778178204)
- [Trail Scout: Hiking Permits](https://appshunter.io/ios/app/trail-scout-hiking-permits/id6801327000)

All apps by Neeraj Aggarwal: https://appshunter.io/developer/1877631231

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-04.*