# Featherweight UI vs Bloo Ink

The clearest difference is update cadence: Featherweight UI at every 3 weeks against Bloo Ink's every 6 months. Featherweight UI also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.5). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Featherweight UI ships an update every 3 weeks, Bloo Ink every 6 months. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Featherweight UI | Bloo Ink |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (12 ratings)](https://appshunter.io/ios/app/featherweight-ui/id1641310058/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Monetization | Free | — |
| Size | 101 MB | 1 MB |
| Requires iOS | **15.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Featherweight Altimeters LLC](https://appshunter.io/developer/1641310060) | [BLOO LLC](https://appshunter.io/developer/1206675217) |

## What reviewers say

### Featherweight UI

[App page](https://appshunter.io/ios/app/featherweight-ui/id1641310058)

Connect your Bluetooth-enabled Featherweight Altimeters products to your phone. View live sensor data, configure settings, download flight information, and track your rocket's position and velocity with a live map.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Bloo Ink

[App page](https://appshunter.io/ios/app/bloo-ink/id6451118533)

**In-app purchases:** none


## Frequently asked questions

### Is Featherweight UI free?

Featherweight UI is free to download, with no in-app purchases.

### Is Bloo Ink free?

Bloo Ink is free to download, with no in-app purchases.

### Do Featherweight UI or Bloo Ink have ads?

Neither Featherweight UI nor Bloo Ink shows ads.

### Which is updated more often, Featherweight UI or Bloo Ink?

Featherweight UI ships an update every 3 weeks, and Bloo Ink every 6 months. Most recently, Featherweight UI was updated on October 25, 2026 and Bloo Ink on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*