# NaCross - 壁紙糊付け最適化 — クロスのロスを最小化する現場ツール

> クロスのロスを最小化する現場ツール (iPhone/iPad app by Kouichi Yamaguchi.)

- Source: https://appshunter.io/ios/app/nacross/id6772396303 (this page in markdown: same URL + `.md`)
- Developer: [Kouichi Yamaguchi](https://appshunter.io/developer/1819294170)
- Category: Business, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 15.1 · 30 MB
- Languages: American English
- Released: 2026-07-31
- Data updated: 2026-08-18
- User reviews in markdown: https://appshunter.io/ios/app/nacross/id6772396303/reviews.md

## What is NaCross?

NaCross is a wallpaper (cross) installation optimization tool for professionals.
Just enter cut dimensions and quantities to automatically calculate the optimal roll allocation that minimizes waste.
[Features]

Loss minimization calculation
Automatically calculates optimal allocation using the FFD (First Fit Decreasing) algorithm.
Multiple rolls supported
Set multiple rolls with individual length, head loss, and tail loss per roll. Automatically allocates to the next roll when 50m is exceeded.
Recommended order quantity
Automatically calculates recommended order quantity rounded up to 0.5m increments.
Flexible unit selection
Supports m, cm, and mm units.
Numpad input
Large numpad designed for on-site smartphone use.


## Version history (last 3 releases)

### 1.2 — 2026-08-15

Review work areas without leaving the calculation screen
• A tab strip for your saved work areas now appears below the site name field. Tap a tab to expand that work area and review it right where you are — whatever you are currently entering is never overwritten.
• The Edit button in the top right of an expanded card loads that work area into the input form, so you can keep working without changing screens.
• The expanded tab is highlighted in dark blue, so you can always tell which work area you are looking at.

Clearer navigation
• The back button at the top of the calculation screen is now a single full-width blue "← Site list" button, making it easier to tap.
• When you open a work area for editing, a "← Back to work area list" button now also appears below the Save button.
• The "Go to work area list" button now appears whenever the site name matches a saved site, and your current input is preserved.

Other improvements
• The default unit of length is now cm instead of mm.

### 1.1 — 2026-08-05

Small bug fixed.

### 1.0 — 2026-07-30

No release notes.

## More apps by Kouichi Yamaguchi

- [Escape Game - Base](https://appshunter.io/ios/app/escape-game-base/id6746975093)
- [Escape Mystery Bar](https://appshunter.io/ios/app/escape-mystery-bar/id6747636489)
- [QR Code Scanner & Generators :](https://appshunter.io/ios/app/qr-code-scanner-and-generators/id6747636748)
- [Puzzle Escape: Hospital](https://appshunter.io/ios/app/puzzle-escape-hospital/id6751545140)
- [Escape Game - Hotel](https://appshunter.io/ios/app/escape-game-hotel/id6752825541)
- [Escape Game -Three Little Pigs](https://appshunter.io/ios/app/escape-game-three-little-pigs/id6755348852)

All apps by Kouichi Yamaguchi: https://appshunter.io/developer/1819294170

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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 2026-08-18.*