# Duet — Offline File Transfer — Private QR transfer, no cloud

> Private QR transfer, no cloud (iPhone/iPad app by MICHAL DOMINIK GIZA.)

- Source: https://appshunter.io/ios/app/duet-offline-file-transfer/id6779235365 (this page in markdown: same URL + `.md`)
- Developer: [MICHAL DOMINIK GIZA](https://appshunter.io/developer/1823987250)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 17+
- Requires: iOS 15.0 · 36 MB
- Languages: American English
- Released: 2026-06-16
- Data updated: 2026-08-18
- User reviews in markdown: https://appshunter.io/ios/app/duet-offline-file-transfer/id6779235365/reviews.md

## What is Duet?

Duet sends what matters from one phone to another — and gets out of your way.

Pick a file, a contact, a Wi-Fi password, a 2FA setup code, or any text. The
sender shows a QR code; the receiver scans it. For larger files, the two phones
connect directly over your local network. Everything is end-to-end encrypted,
and nothing ever touches a server.

No account. No sign-up. No ads. No tracking. No cloud.

WHY DUET
• Reliable by design — built to finish the transfer, every time.
• Truly private — your data goes phone-to-phone, never through us. We can't see
  it because it never reaches us.
• Zero clutter — no ads, no upsells, no “create an account” wall.

WHAT YOU CAN SEND
• Files of any kind — documents, photos, videos, archives. Streamed directly,
  so size isn't a problem.
• Wi-Fi credentials — share your network without reading the password aloud.
• Contacts — send a contact card that drops straight into the other phone.
• 2FA / authenticator setup codes — move your TOTP seeds to a new phone.
• Plain text and links.

HOW IT WORKS
• Small items travel in a single QR code — scan and done, no network needed.
• Larger items use animated QR or a direct local-network link between the two
  phones. Your data stays on your local network; it never goes to the cloud.
• Every transfer is encrypted end-to-end. For the local-network mode, both
  phones show a quick visual match-check first, so you know there's no one in
  the middle.

PRIVACY YOU CAN VERIFY
• Data Not Collected. No analytics SDKs, no ad SDKs, no trackers.
• No internet connection is used to move your data.
• Transfer contents are never written to permanent storage.

Duet is free, and it stays free. No subscriptions, no “pro” paywall on the core
transfer.


## Version history (last 3 releases)

### 1.2 — 2026-06-18

What's new in 1.2
• Share to Duet — send a photo or file straight from Photos, Files or any app: tap Share, pick Duet.
• Files first — the Send screen now leads with file & folder sharing.
• A smoother finish screen and better large-text support.
Still end-to-end encrypted. No account, no tracking, no cloud.

### 1.1 — 2026-06-16

Minor improvements and optimization

### 1.0 — 2026-06-16

No release notes.

## More apps by MICHAL DOMINIK GIZA

- [Satellite Tracker / Radar](https://appshunter.io/ios/app/satellite-tracker-radar/id6754342861)
- [Słowik – Twoje Słowo Dnia](https://appshunter.io/ios/app/sowik-twoje-sowo-dnia/id6758209185)
- [RevailLab: AI Music Detector](https://appshunter.io/ios/app/revaillab-ai-music-detector/id6762625295)
- [Cat App — Street Cat Feeding](https://appshunter.io/ios/app/cat-app-street-cat-feeding/id6779990103)
- [PlantDex: Detect Plants](https://appshunter.io/ios/app/plantdex-detect-plants/id6782409306)

All apps by MICHAL DOMINIK GIZA: https://appshunter.io/developer/1823987250

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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.*