# e-chain

> NFC e-paper keychain maker

Canonical page: [https://chrome-stats.com/d/id6767170808](https://chrome-stats.com/d/id6767170808)

## Overview

- **ID:** `id6767170808`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Luigi Greco
- **Category:** Utilities
- **Version:** 1.1
- **Last updated:** 2026-05-26
- **First published:** 2026-05-26
- **Size:** 4.33 MB
- **Data as of:** 2026-09-25
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/e-chain/id6767170808)
- **Website:** [https://sites.google.com/view/e-chain/](https://sites.google.com/view/e-chain/)
- **Privacy policy:** [https://sites.google.com/view/e-chain/privacy-policy](https://sites.google.com/view/e-chain/privacy-policy)

## Description

e-chain helps you design and write artwork to supported NFC-powered e-paper keychain displays.

Choose your Waveshare 1.54-inch panel, add a photo or text, tune brightness, contrast, saturation, exposure, sharpness, dithering, and panel colors, then send the finished image by holding your iPhone near the NFC tag.

Features:
- Supports Waveshare 1.54-inch NFC-powered e-paper B and G panels
- Photo import with live e-paper preview
- Text overlays with repeat and spacing controls
- Three-color and four-color panel palettes
- Dithering and direct color modes
- Local saved drafts and recent images
- NFC write progress with clear status updates

## Rankings

- #2,199,436 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6767170808)