# HB-A03

> HB-A03 (iPhone/iPad app by 海洋 刘.)

- Source: https://appshunter.io/ios/app/hb-a03/id6751175506 (this page in markdown: same URL + `.md`)
- Developer: [海洋 刘](https://appshunter.io/developer/1736870190)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 30 MB
- Languages: American English, Japanese, Chinese (Simplified, China)
- Released: 2025-08-29
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/hb-a03/id6751175506/reviews.md

## What is HB?

HB-A03 Heated Socks App "is an intelligent application that precisely controls heated socks through BLE Bluetooth technology, providing users with a warm and comfortable wearing experience. The app supports free temperature adjustment (35 ℃ -70 ℃) to meet the needs of different seasons and scenarios -35 ℃ -45 ℃ is suitable for daily warmth, and 50 ℃ -70 ℃ can quickly relieve cold feet. The 6-speed timer function (15 minutes to 2 hours) balances safety and convenience, and can be turned on for 1.5 hours before bedtime to enjoy warmth throughout the night.
Adopting low-power Bluetooth 5.0 technology, the hardware device can be adjusted from 35 ℃ to 70 ℃, with 4 default settings (42 ℃/50 ℃/60 ℃/70 ℃). Timer 6 (15min/30min/45min/60min/1.5H/2H), automatic power-off after 30 seconds of countdown. The device reports the remaining battery level (without historical record storage).
Whether you are a skiing enthusiast, a winter outdoor worker, or a person with a cold body, you can always keep your feet in the best temperature state through one click operation on your mobile phone. Combined with the control of the app, it redefines the way modern people keep warm.


## Version history (last 4 releases)

### 1.3 — 2025-09-09

Optimize the connection speed of the app

### 1.2 — 2025-09-05

This version has optimized the process of connecting devices and displaying battery levels

### 1.1 — 2025-09-03

This version optimizes the process of connecting devices

### 1.0 — 2025-08-29

No release notes.

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## More apps by 海洋 刘

- [Warm U](https://appshunter.io/ios/app/warm-u/id6504526300)
- [Update DIY](https://appshunter.io/ios/app/update-diy/id6740467469)
- [Compression Leg Massager](https://appshunter.io/ios/app/compression-leg-massager/id6745699701)
- [Go Evolution](https://appshunter.io/ios/app/go-evolution/id6755924300)

All apps by 海洋 刘: https://appshunter.io/developer/1736870190

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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 2026-05-17.*