# Phone App

Published articles for Phone App.

This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles.

## FunFitLand Brings Live Heart Rate Tracking Into VR With New Phone App

DevFeed: [FunFitLand Brings Live Heart Rate Tracking Into VR With New Phone App](<https://devfeed.tech/articles/funfitland-brings-live-heart-rate-tracking-into-vr-with-new-phone-app-17275.md>)

Original publisher: [Read original article](<https://www.uploadvr.com/funfitland-brings-live-heart-rate-tracking-into-vr-with-new-phone-app/>)

Author: Craig Storm

Published: 2026-09-08T02:00:00Z

Content type: news

Language: en

Sources: [UploadVR](<https://devfeed.tech/sources/uploadvr.md>)

Topics: [App](<https://devfeed.tech/topics/app.md>), [data](<https://devfeed.tech/topics/data.md>), [Android](<https://devfeed.tech/topics/android.md>), [iOS](<https://devfeed.tech/topics/ios.md>), [Mobile](<https://devfeed.tech/topics/mobile.md>), [Bluetooth](<https://devfeed.tech/topics/bluetooth.md>), [Meta](<https://devfeed.tech/topics/meta.md>), [Server](<https://devfeed.tech/topics/server.md>)

Tags: [android](<https://devfeed.tech/tags/android.md>), [app](<https://devfeed.tech/tags/app.md>), [apple](<https://devfeed.tech/tags/apple.md>), [bluetooth](<https://devfeed.tech/tags/bluetooth.md>), [compatibility](<https://devfeed.tech/tags/compatibility.md>), [fitness](<https://devfeed.tech/tags/fitness.md>), [meta](<https://devfeed.tech/tags/meta.md>), [phone-app](<https://devfeed.tech/tags/phone-app.md>), [servers](<https://devfeed.tech/tags/servers.md>), [smartphone](<https://devfeed.tech/tags/smartphone.md>), [testing](<https://devfeed.tech/tags/testing.md>), [vision](<https://devfeed.tech/tags/vision.md>)

### AI overview

FunFitLand's new iOS and Android companion app connects compatible wearables to VR workouts on Meta Quest and Apple Vision Pro, displaying live heart rate data and recording workout metrics.

### Source excerpt

FunFitLand's new smartphone app brings live heart rate data from compatible wearables directly into your VR workouts on Quest and Apple Vision Pro.

## How I Gave the Claude App Access to My Self-Hosted Second Brain

DevFeed: [How I Gave the Claude App Access to My Self-Hosted Second Brain](<https://devfeed.tech/articles/how-i-gave-the-claude-app-access-to-my-self-hosted-second-brain-25173.md>)

Original publisher: [Read original article](<https://www.ivanmorgillo.com/2026/06/13/claude-app-self-hosted-second-brain/>)

Author: Ivan Morgillo

Published: 2026-06-13T06:45:00Z

Content type: tutorial

Language: en

Sources: [Ivan Morgillo](<https://devfeed.tech/sources/ivan-morgillo.md>)

Topics: [Claude](<https://devfeed.tech/topics/claude.md>), [Model Context Protocol](<https://devfeed.tech/topics/model-context-protocol.md>), [Self-hosted](<https://devfeed.tech/topics/self-hosted.md>), [OAuth](<https://devfeed.tech/topics/oauth.md>), [tailscale](<https://devfeed.tech/topics/tailscale.md>), [Qdrant](<https://devfeed.tech/topics/qdrant.md>)

Tags: [claude](<https://devfeed.tech/tags/claude.md>), [mcp](<https://devfeed.tech/tags/mcp.md>), [oauth](<https://devfeed.tech/tags/oauth.md>), [phone-app](<https://devfeed.tech/tags/phone-app.md>), [self-hosted](<https://devfeed.tech/tags/self-hosted.md>), [solar](<https://devfeed.tech/tags/solar.md>), [tailscale](<https://devfeed.tech/tags/tailscale.md>)

### AI overview

The author describes extending a self-hosted memory service to the Claude app through a remote MCP server. The design keeps the data at home while exposing an HTTPS endpoint through Tailscale Funnel and protecting it with OAuth 2.1, including PKCE and refresh tokens; Qdrant is also part of the setup.

### Source excerpt

I gave the Claude phone app access to my self-hosted memory -- a remote MCP server over Tailscale Funnel, OAuth and Qdrant, running on a solar-powered PC at home.

## Introducing the ESP RainMaker Phone App Development Kit

DevFeed: [Introducing the ESP RainMaker Phone App Development Kit](<https://devfeed.tech/articles/introducing-the-esp-rainmaker-phone-app-development-kit-13740.md>)

Original publisher: [Read original article](<https://developer.espressif.com/blog/2025/12/esp-rainmaker-phone-app-dev-kit/>)

Author: John Lee

Published: 2025-12-02T00:00:00Z

Content type: release

Language: en

Sources: [Blog on Developer Portal](<https://devfeed.tech/sources/blog-on-developer-portal.md>)

Topics: [Esp Rainmaker](<https://devfeed.tech/topics/esp-rainmaker.md>), [SDK](<https://devfeed.tech/topics/sdk.md>), [React Native](<https://devfeed.tech/topics/react-native.md>), [Mobile](<https://devfeed.tech/topics/mobile.md>), [TypeScript](<https://devfeed.tech/topics/typescript.md>), [cross-platform](<https://devfeed.tech/topics/cross-platform.md>), [Espressif](<https://devfeed.tech/topics/espressif.md>), [Cloud](<https://devfeed.tech/topics/cloud.md>)

Tags: [blog](<https://devfeed.tech/tags/blog.md>), [cloud](<https://devfeed.tech/tags/cloud.md>), [cross-platform](<https://devfeed.tech/tags/cross-platform.md>), [esp-rainmaker](<https://devfeed.tech/tags/esp-rainmaker.md>), [espressif](<https://devfeed.tech/tags/espressif.md>), [mobile](<https://devfeed.tech/tags/mobile.md>), [phone-app](<https://devfeed.tech/tags/phone-app.md>), [rainmaker](<https://devfeed.tech/tags/rainmaker.md>), [react-native](<https://devfeed.tech/tags/react-native.md>), [sdk](<https://devfeed.tech/tags/sdk.md>), [typescript](<https://devfeed.tech/tags/typescript.md>)

### AI overview

Espressif announces the ESP RainMaker Phone App Development Kit, combining a cross-platform TypeScript SDK, Central Data Framework, and React Native reference app. The kit is intended to help developers build branded mobile applications with customizable interfaces and workflows while using ESP RainMaker infrastructure for device management and secure communication.

### Source excerpt

Espressif announces the ESP RainMaker Phone App Development Kit, a comprehensive cross-platform toolkit combining a TypeScript SDK, Central Data Framework (CDF), and React Native reference app. This production-ready kit enables developers to rapidly build branded mobile applications with customisable UI and workflows, whilst leveraging Espressif's robust RainMaker cloud infrastructure for device management and secure communication.

## Matter: Device-to-Device Automations

DevFeed: [Matter: Device-to-Device Automations](<https://devfeed.tech/articles/matter-device-to-device-automations-13913.md>)

Original publisher: [Read original article](<https://developer.espressif.com/blog/matter-device-to-device-automations/>)

Author: John Lee

Published: 2021-12-07T00:00:00Z

Content type: article

Language: en

Sources: [Blog on Developer Portal](<https://devfeed.tech/sources/blog-on-developer-portal.md>)

Topics: [Matter](<https://devfeed.tech/topics/matter.md>), [Network](<https://devfeed.tech/topics/network.md>), [client](<https://devfeed.tech/topics/client.md>), [Server](<https://devfeed.tech/topics/server.md>)

Tags: [app](<https://devfeed.tech/tags/app.md>), [article](<https://devfeed.tech/tags/article.md>), [blog](<https://devfeed.tech/tags/blog.md>), [communication](<https://devfeed.tech/tags/communication.md>), [devices](<https://devfeed.tech/tags/devices.md>), [esp32](<https://devfeed.tech/tags/esp32.md>), [iot](<https://devfeed.tech/tags/iot.md>), [local](<https://devfeed.tech/tags/local.md>), [matter](<https://devfeed.tech/tags/matter.md>), [network](<https://devfeed.tech/tags/network.md>), [phone-app](<https://devfeed.tech/tags/phone-app.md>), [subscriber](<https://devfeed.tech/tags/subscriber.md>)

### AI overview

This article explains how Matter devices can interact directly over a local network to create automations. It covers device binding, synchronous control, and asynchronous notification through publisher-subscriber relationships.

### Source excerpt

[This is article #3 in the Espressif Matter Series of articles. You may read the second part here.] In the previous article we looked at the data model of Matter. Today, let us talk about how Matter devices within a network can interact with each other leading to useful automations. For instance, you may want a light switch at your home to control one or more light bulbs. Or even a thermostat to turn on or off based on reports from the occupancy sensor.

## TIP: Adapting to Tablets

DevFeed: [TIP: Adapting to Tablets](<https://devfeed.tech/articles/tip-adapting-to-tablets-19561.md>)

Original publisher: [Read original article](<https://www.codenameone.com/blog/tip-adapting-to-tablets/>)

Author: Shai Almog

Published: 2019-03-04T00:00:00Z

Content type: tutorial

Language: en

Sources: [CodeName One](<https://devfeed.tech/sources/codename-one.md>)

Topics: [App](<https://devfeed.tech/topics/app.md>), [Development](<https://devfeed.tech/topics/development.md>), [API](<https://devfeed.tech/topics/api.md>)

Tags: [api](<https://devfeed.tech/tags/api.md>), [app-development](<https://devfeed.tech/tags/app-development.md>), [classes](<https://devfeed.tech/tags/classes.md>), [compilation](<https://devfeed.tech/tags/compilation.md>), [development](<https://devfeed.tech/tags/development.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [phone-app](<https://devfeed.tech/tags/phone-app.md>), [phones](<https://devfeed.tech/tags/phones.md>), [subclass](<https://devfeed.tech/tags/subclass.md>)

### AI overview

This tutorial presents a "phone first" approach for adapting Codename One applications to tablets. It describes building the phone version first, then restructuring forms and subclasses to support a tablet layout with a permanent side menu and replaceable content. The author notes that generalizing the approach into a standardized API has been difficult.

### Source excerpt

A while back someone asked on stackoverflow how to adapt a Codename One app to tablets. I provided quite a few references in the answer and following discussion but I think a better approach is to explain what we did with the recent Codename One Build app because that's what I've been doing in all recent apps I worked on. I call this approach the "phone first" approach for universal app development. It starts by forgetting about the tablet and focusing on building a good looking phone app. In this app I usually subclass Form for all the classes which instantly creates an app that's very suitable for phones.