# Hum — Brown Noise — One button. Deep focus.

> One button. Deep focus. (iPhone/iPad app by WonHyeong Chang.)

- Source: https://appshunter.io/ios/app/hum-brown-noise/id6800964125 (this page in markdown: same URL + `.md`)
- Developer: [WonHyeong Chang](https://appshunter.io/developer/6791676100)
- Category: Health & Fitness, Lifestyle
- Price: $1.99
- Age rating: 4+
- Requires: iOS 16.4 · 28 MB
- Languages: American English
- Released: 2026-08-20
- Data updated: 2026-10-25

## What is Hum?

One button. No ads. No subscription. No account.
Press it and deep brown noise flows within a second.
Buy once, keep forever.

Three sounds — brown, pink, white. Swipe to switch.
Everything is generated on your device in real time:
no audio files, no streaming, no loop seams.

Private by design: Hum never uses the network.
No tracking, no sign-up, no cloud. Nothing leaves your phone.

• Background playback with Lock Screen & Control Center controls
• Lock Screen and Home Screen widgets — toggle without opening the app
• Sleep timer you set in hours and minutes, with a gentle fade-out
• Volume tuned for the low, quiet range that noise needs

## Is Hum safe?

Not enough ratings yet to assess Hum.

## Is Hum legit?

Hum — Brown Noise has limited verification signals. The AppsHunter Legitimacy Score for Hum is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.1 — 2026-09-15

• Refreshed design with cleaner, clearer type
• A ring around the button shows how much of your sleep timer is left
• New sleep timer: set hours and minutes, down to the minute
• Turn the timer off in one tap
• Smoother scrolling in the timer wheel

### 1.0 — 2026-08-20

No release notes.

## More apps by WonHyeong Chang

- [Nakseojangssi: One Line a Day](https://appshunter.io/ios/app/nakseojangssi-one-line-a-day/id6791676098)

All apps by WonHyeong Chang: https://appshunter.io/developer/6791676100

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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 2026-10-25.*