# Featherweight UI — App for all FW BLE Hardware

> Bluetooth interface for Featherweight Altimeters and GPS trackers. (iPhone/iPad app by Featherweight Altimeters LLC.)

- Source: https://appshunter.io/ios/app/featherweight-ui/id1641310058 (this page in markdown: same URL + `.md`)
- Developer: [Featherweight Altimeters LLC](https://appshunter.io/developer/1641310060)
- Category: Lifestyle, Utilities
- Price: Free
- Rating: 4.30/5 from 12 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 100 MB
- Languages: American English
- Released: 2023-07-30
- Data updated: 2026-09-08
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/featherweight-ui/id1641310058/reviews.md

## What is Featherweight UI?

The Featherweight Interface app connects any of your Bluetooth-enabled Featherweight Altimeters products to your phone.  For the Blue Raven flight computer, use your phone to see live sensor data, set up deployment conditions, download and review recorded flight data, and more!  For the Featherweight GPS tracker, your phone points to your rocket and provides all the rocket position, velocity, link quality and tracker health data you would want at your fingertips.  Live map feature plots the ground station and tracker locations to plan your recovery.

## Key features

- Connects to BLE Featherweight Altimeters
- View live sensor data
- Set deployment conditions
- Download and review flight data
- Track rocket position and velocity
- Live map for recovery planning

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/featherweight-ui/id1641310058/reviews.md

### 1/5 — lies to you

*2024-11-06*

the app will say a channel is armed and green even when the flight computer isn’t! there is not consistency. did the authors even test this?

### 5/5 — Integrated App!!!

*2024-06-23*

So great to see a fully integrated app for both Blue Raven and GPS tracker. The UI is clean and I appreciate the full App Store integration so update can be automated. Well done.

## Frequently asked questions about Featherweight UI

### What devices does Featherweight UI support?

Featherweight UI is compatible with iPhone, iPad, and iPod devices. It connects to any Bluetooth-enabled Featherweight Altimeters products, including the Blue Raven flight computer and Featherweight GPS tracker.

### How does Featherweight UI help with rocket recovery?

The app provides live tracking of your rocket's position and velocity via the Featherweight GPS tracker. Its live map feature plots both the ground station and tracker locations, aiding in recovery planning.

### Can I review past flights with Featherweight UI?

Yes, Featherweight UI allows you to download and review recorded flight data from your Featherweight Altimeters products. This enables detailed analysis of your flight performance.

### Is Featherweight UI free to use?

Featherweight UI is available for free. There are no costs associated with downloading or using the application.

### What is the age rating for Featherweight UI?

Featherweight UI has an age rating of 4+. This indicates it is suitable for a wide range of users.

### How often is Featherweight UI updated?

The latest version of Featherweight UI is 1.0.25, last updated on January 13, 2026. While the last update date is in the future, this suggests ongoing development and support.

### What kind of data can I see live with Featherweight UI?

When connected to the Blue Raven flight computer, you can see live sensor data. For the Featherweight GPS tracker, you can view real-time rocket position, velocity, link quality, and tracker health.

### Does Featherweight UI have ads?

No, Featherweight UI does not contain advertisements. Users can expect an ad-free experience while using the application.

## Version history (last 5 releases)

### 1.1.7 — 2026-09-02

New Swift firmware version 8c8fc8f (8/26/2026)
-Increased Bluetooth transmission power for the Swift tracker and ground station
-Improved launch detection
-Improved data recording
-LoRa packets with CRC errors are recorded in GS log with CRC error status marked
-Simulation updates the horizontal position
-Watchdog timer protects against software hangs
UI updates:
-Time since last packet added to tracker screen
-Tracker GPS status is shown over Bluetooth when it is available and a GS LoRa connection is not
Known issues:
-Update the firmware one unit at a time to avoid needing to power cycle
-Excel formatted version of tracker recorded flight requires Excel repairs when opened

### 1.1.6 — 2026-07-28

-A low-power sleep mode for the Swift tracker that you can control from the phone, which cuts the power consumption by about a factor of 4. Good for making a small battery last longer between flights.
-Lost rocket mode for the Swift tracker. If the Swift lands and doesn't hear from the ground station or the phone for 5 minutes, it starts a sleep/wake cycle that includes a transmission on the original paired tracker channel and the lost & found channel so that other Featherweight trackers can pass along its location. A Swift tracker in lost rocket mode can last longer than 25 hours when using a 400 mAhr battery.
-Improved over-the-air firmware updates
Bug fixes:
-Detect the end of a channel scan
-Preserve the Swift channel number when changing channel plans
-More reliable voice telemetry
-Original tracker channel scan now covers all channels in the original channel plan

### 1.1.5 — 2026-07-08

New features:
-Flight data (10 Hz+) recorded on-board the Swift tracker, with downloading via Bluetooth
-Simulated flights for the Swift tracker
-The Swift tracker now forwards data from lost original trackers
-Updated UI for lost rocket data

### 1.1.4 — 2026-06-12

-Fixes a bug that prevented the phone from displaying data from an original tracker if the original tracker's name is less than 11 characters.
-Improves the download interface with a new widget that shows download progress in all screens

No changes to the latest firmware versions

Known issues:
-The ground station log stops recording data prematurely

### 1.1.3 — 2026-05-28

New features:
Full inter-operability between original ground stations and trackers and Swift ground stations and trackers when using the original channels
Fast scanning of all 3 channel plans when using Swift GS
Swift tracker scans for an open channel before transmitting

Bugs fixed:
Swift LoRa comm is more reliable now with improved time synchronization 
Voice telemetry on original trackers and GS is available again
Downloading recorded data is more reliable

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## Related topics

[featherweight ui](https://appshunter.io/ios/topics/featherweight-ui) · [featherweight](https://appshunter.io/ios/topics/featherweight)

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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 2026-09-08.*