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Built for Duo

Bionic Tape

Turns your iPhone into a cassette deck that plays your music with reels and keys.

HMZ craftsmanship GmbH · Music & Audio · $2.99

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iPhone screenshots

Bionic Tape — iPhone screenshots 1
Bionic Tape — iPhone screenshots 2

How it uses iPhone Duo

BUILT FOR THE IPHONE DUO

What’s New

Version 1.1.3 ·

• Uses less battery: paused in the background, the tape sound engine goes to sleep • All keys now visibly press down, even on a quick tap • Longer volume wheel on the Duo cover display • The «Insert a tape first» hint clears itself once a tape is in • Pressing PLAY several times no longer starts a tape twice

App Store descriptionWritten by the developer.

Unfold, pick a tape, fold, listen. Bionic Tape turns your iPhone into a cassette deck. Unfolded, your playlists and albums sit on the shelf as cassettes, each in its case with cover art. Tap, and the tape slides into the deck. Fold the phone, and the tape rolls on the cover screen: reels spin, the tape hisses, the keys click. WHAT'S INSIDE • Fold instead of tap: the hinge decides whether you pick tapes or listen. Folding starts playback. • Keys you can press: real 3D keys with travel, click and haptics. PLAY latches while the tape is running. • Volume you can feel: a knob with an LED ring, a thumb wheel or a touch pad, depending on device and skin. 16 detents, each one clicks. • SHUFFLE: a slide switch plays your tapes in random order. • OUT: send the music to smart speakers, Bluetooth speakers or headphones. • Window: look through the window at the cassette with its handwritten label and the current song. The tape pack shows how much of the tape is left. • Tent mode: stand your iPhone up as a tent and the cassette becomes the show, with your playlist's cover art as the label. Tap to play/pause, swipe for the next track. • Full screen: tap the cassette and only the tape remains. • Seven skins: Translucent in see-through turquoise, 1983 in the style of 80s office computers, Sport in bold 80s yellow, Classic retro blue, Bionic OS, Cyberpunk and HMZ.swiss. • TAPE FX: hiss and clicks can be switched off. MUSIC • Apple Music: your playlists and albums as cassettes. Requires an Apple Music subscription. • Your own music: MP3, FLAC, AAC, ALAC, WAV and AIFF from the Files app, every album a cassette. Plays offline and in the background, with lock screen controls. • Demo tapes: work right away, no account needed. • Spotify and more services follow as free updates. BUILT FOR THE IPHONE DUO Made for unfolding and folding. On iPhones without a hinge, a button switches between shelf and player. NO TRACKING No ads, no analytics, no account with us. Buy once, no subscription. A project from the HMZ workshop, Zurich. Feedback welcome: hmz.swiss/en/walkman

Bionic Tape on iPhone Duo: FAQ

Is Bionic Tape optimized for iPhone Duo?

Yes. Bionic Tape is Built for Duo: it uses the fold, Split View or the outer display. Verified on October 25, 2026 (App Store text).

What does Bionic Tape look like on iPhone Duo?

BUILT FOR THE IPHONE DUO

How much does Bionic Tape cost?

Bionic Tape costs $2.99 on the App Store.

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