# BLEnd Switch — DIY Bluetooth door trigger

> DIY Bluetooth door trigger (iPhone/iPad app by SommLogic LLC.)

- Source: https://appshunter.io/ios/app/blend-switch/id6802088410 (this page in markdown: same URL + `.md`)
- Developer: [SommLogic LLC](https://appshunter.io/developer/6795322362)
- Category: Utilities, Lifestyle
- Price: $1.99
- Age rating: 4+
- Requires: iOS 15.1 · 40 MB
- Languages: American English
- Released: 2026-09-07
- Data updated: 2026-09-18

## What is BLEnd Switch?

Open a door from your phone over Bluetooth Low Energy — no Wi-Fi, no hub, no subscription.

BLEnd Switch is a simple trigger for a winery production door, a cellar door, a garage door, a gate, or any relay-controlled opener. When you are nearby, swipe to trigger. The app finds your device by its advertised BLE name, connects, writes the configured trigger byte to a GATT characteristic, and disconnects.

WHY BLUETOOTH, NOT WI-FI
Your phone talks straight to the controller over BLE. If your Wi-Fi is down, or the door is somewhere with no Wi-Fi coverage at all — a remote production building, a barn, the far end of a vineyard — BLEnd Switch still works. You can still add Wi-Fi via ESPHome and Home Assistant for automations or remote monitoring; it's just not required for the trigger itself.

ONE SWIPE, NOT A SETTINGS MAZE
Configure the advertised BLE name and GATT UUIDs once in Settings. After that it's a single deliberate swipe, every time — no accidental pocket triggers, no Bluetooth pairing, and nothing to fiddle with.

BUILD YOUR OWN CONTROLLER
The reference build is a Seeed XIAO ESP32-C3 and a relay module, flashed with ESPHome. The relay performs a brief momentary short across the two low-voltage wires that already run to the wall button — the same electrical event as a button press. It is not intended to bypass the opener's existing safety systems. Other BLE-capable microcontrollers can work when they expose matching GATT values.

The full reference ESPHome YAML is built into the app's About screen, with a Share button so you can send it straight into your own config. A build guide with photos is linked from the same screen.

NOTHING LEAVES YOUR DEVICE
No accounts, no sign-up, no analytics, no ads, no tracking. Your device name and BLE settings are stored only on your phone.

FOR ELECTRONICS HOBBYISTS
Building the reference controller involves soldering and low-voltage wiring into an existing door opener's control circuit. Do this only if you're comfortable with DIY electronics — never wire into mains or high voltage, and if you're not sure, hire a qualified installer.

Operate a door only when you can confirm the area is clear. The reference BLE command is nearby convenience control, not a cryptographic access-control system.

Made by SommLogic.

—

ESP32, ESP32-C3, Seeed Studio, XIAO, ESPHome, and Home Assistant are trademarks of their respective owners. BLEnd Switch and SommLogic LLC are not affiliated with, sponsored by, or endorsed by any of them — the names are used only to describe compatible, off-the-shelf hardware and open-source software.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://sommlogic.com/privacy.html

## Chart rankings

- #198 in Top Paid · Utilities (US App Store)


## Version history (last 2 releases)

### 1.0.1 — 2026-09-17

Swipe to trigger: the door button is now a slide-to-confirm control, so a stray tap in your pocket or bag can't open the door. VoiceOver users can still activate it with a double-tap. Refreshed Home artwork and updated in-app help text.

### 1.0 — 2026-09-08

No release notes.

## More apps by SommLogic LLC

- [Wine 101 Quiz](https://appshunter.io/ios/app/wine-101-quiz/id6795322360)
- [Cork & Chat](https://appshunter.io/ios/app/cork-and-chat/id6796092459)

All apps by SommLogic LLC: https://appshunter.io/developer/6795322362

---

*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 2026-09-18.*