Reetle SmartInk I turns your iPhone into a dual-screen tool

Memet Deniz Yucekaya

November 28, 2025

The Reetle SmartInk I is an affordable e-ink accessory designed for iPhone users who want more than just a main display. This smart add-on sticks to the back of your phone and delivers useful features like reading, memo-taking, and real-time content display all without draining your main battery.

Reetle SmartInk I snaps on like a case, no wires needed

Installing the Reetle SmartInk I is simple. It attaches like a regular phone case and connects via Wi-Fi or Bluetooth through the companion app. It works with iPhone 14 through 17 models, requiring no cables or special ports. That makes it easy to remove or swap between devices.

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Adds e-reader and memo features

The 3.97-inch e-ink screen on the Reetle SmartInk I runs at 480 × 800 resolution. While small, it’s ideal for reading in bright light and doesn’t strain your eyes. You can display books, QR codes, boarding passes, and to-do lists.

A key feature is its built-in voice memo button. Tap once to record, and AI will transcribe and summarize the note ideal for fast thoughts or reminders on the go.

Here’s what the Reetle SmartInk I offers:

• 3.97-inch e-ink screen (480×800 px)
• Works with iPhone 14, 15, 16, and 17
• Wireless connection via Bluetooth or Wi-Fi
• Displays books, travel info, QR codes
• Built-in voice recording with AI transcription
• 300 mAh battery with 10-hour use
• Wireless charger included

Reetle SmartInk I enters crowdfunding phase

The Reetle SmartInk I is currently live on Kickstarter with prices starting at $120. Shipping is expected to begin in February 2026. Since this is Reetle’s first campaign, backers should be aware of typical crowdfunding risks like shipping delays or spec changes.

Even so, the Reetle SmartInk I offers a unique way to bring low-power functionality to your phone without cluttering the main screen. It’s a second screen that knows its role.