# Just an Offline Toolbox — offline tools & Ash QR

> offline tools & Ash QR (iPhone/iPad app by Ziwen Fu.)

- Source: https://appshunter.io/ios/app/just-an-offline-toolbox/id6791867275 (this page in markdown: same URL + `.md`)
- Developer: [Ziwen Fu](https://appshunter.io/developer/1884082230)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 17 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-07-29
- Data updated: 2026-08-02
- User reviews in markdown: https://appshunter.io/ios/app/just-an-offline-toolbox/id6791867275/reviews.md

## What is Just an Offline Toolbox?

Just an Offline Toolbox brings everyday text, developer, image, PDF, conversion, and QR utilities into one app. Its core features work offline, and your inputs, files, and results are processed on your device.

  Everyday tools include:

  • Unit Converter — 31 categories, 234 units, and 100 calculators for power, cooling, data center, and everyday use
  • 2FA Authenticator — generate TOTP codes locally from a Base32 secret or otpauth URI
  • QR Code Generator — turn text or URLs into QR codes and save or share a PNG
  • JSON Formatter — beautify, minify, validate, or convert JSON to CSV or YAML
  • Image and PDF utilities — compress, crop, resize, convert, merge, and split
  • Text and developer utilities — encoders, hashes, regex, timestamps, Cron, UUIDs, and more

  Available tools may vary depending on the selected language. Switching languages never uploads your data.

  Ash QR enables one-time encrypted message sharing through QR codes. The recipient creates an inbox QR that expires after 24 hours. The sender imports it, enters up to 900 bytes of text, and generates an encrypted QR code. After successful verification, the recipient device destroys the one-time
  private key before showing the plaintext.

  Privacy by design:

  • No registration or sign-in
  • No ads or analytics
  • No cloud history
  • Inputs, files, and results are never uploaded to developer-operated servers

  The app requests camera access only when you choose to scan a QR code. If you save or share a QR image, the app or share destination you choose handles it.


## Version history (last 1 release)

### 1.0 — 2026-07-29

No release notes.

## More apps by Ziwen Fu

- [Maoyami Light - Selfie Light](https://appshunter.io/ios/app/maoyami-light-selfie-light/id6760356093)

All apps by Ziwen Fu: https://appshunter.io/developer/1884082230

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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 2026-08-02.*