# Fernando K — Communicate to ESP32-ESP8266

> Communicate to ESP32-ESP8266 (iPhone/iPad app by Fernando A. M. Koyanagi Tecnologia.)

- Source: https://appshunter.io/ios/app/fernando-k/id1449589064 (this page in markdown: same URL + `.md`)
- Developer: [Fernando A. M. Koyanagi Tecnologia](https://appshunter.io/developer/626158971)
- Category: Utilities, Education
- Price: Free
- Age rating: 4+
- Requires: iOS 9.0 · 12 MB
- Languages: English
- Released: 2019-01-20
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/fernando-k/id1449589064/reviews.md

## What is Fernando K?

Application to communicate with ESP32 and ESP8266.

Have multiple custom connections listed, you can create, change status, and delete connection. You can connection with Wi-fi socket and Firebase Realtime database.
Add custom buttons, containing title, code, screen position, button color, and text color. Possible to change and delete already created buttons.
Add custom sliders, containing title, min value, max value, screen position, color, and marker color. Possible to change and delete already created sliders.
Save your connections, sliders, pagination and buttons in the device memory so you do not have to create them all the time.
Create multiple screens to put different components.
You can create button backups online, and you can create, search, and change the backup.

*To communication works the microcontroller ESP and the device running the APP must be connected on the same wi-fi  and have to programmer the ESP before the connection to have a communication, the both having the same host and port in connection socket.


## Version history (last 1 release)

### 1.4 — 2019-04-30

Firebase connection
Firebase Log
Plot Graphic

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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 2026-05-19.*