Support

Help Center

Getting Started

How Hum Works

Hum plays sound that's synthesized on your iPhone in real time — nothing is a recording, and nothing ever loops. Choose Sleep mode to wind down with a timer and a gentle fade-out, or Study mode to hold focus for as long as you need.

Previewing Sounds

Every sound in Hum can be previewed for free. Tap any locked sound and it plays for 60 seconds, with a live countdown, before pausing and showing the option to subscribe.

System Requirements

  • iOS 17.0 or later
  • iPhone (not optimized for iPad)

Subscription & Pricing

Free Tier

The free version of Hum includes 60-second previews of every sound. No account or sign-in is required.

Hum Premium

Premium unlocks unlimited playback of all sounds in both Sleep and Study modes.

  • Yearly: $19.99/year, with a 7-day free trial for new subscribers — auto-renews unless canceled

Subscribing

Tap any locked sound, or open Settings within the app, and choose Start Free Trial. You'll be charged nothing for 7 days; after that, your subscription renews automatically at $19.99/year unless you cancel first.

Managing or Canceling Your Subscription

Subscriptions are managed through your Apple ID. To change or cancel:

  • Open the Settings app on your iPhone
  • Tap your name at the top, then tap Subscriptions
  • Select Hum and choose your preferred option
  • Cancel at least 24 hours before your renewal date to avoid being charged

Restoring Purchases

If you've already subscribed on this or another device, open Settings within Hum and tap Restore Purchases. Your Premium access will be restored automatically once verified with Apple.

Refunds

All purchases are processed by Apple. To request a refund, visit reportaproblem.apple.com (opens in new tab) and sign in with your Apple ID.

Using Hum

Sleep Timer

In Sleep mode, set a timer for however long you want sound to play. As the timer winds down, Hum fades the volume out smoothly instead of stopping abruptly, so you aren't jolted awake.

Background Playback & Lock Screen

Hum keeps playing when you lock your phone or switch apps. Play, pause, and the timer are all available from the lock screen and Control Center. Playback automatically pauses if you receive a phone call or your Bluetooth audio device disconnects, and you can resume it manually afterward.

Why the Sounds Are Synthesized

Every sound in Hum — rain, ocean, colored noise, and more — is generated on your device with audio synthesis, not played back from a recording. That means each session is seamless, with no audible loop point, and no audio files ever need to be downloaded or stored.

Troubleshooting

No Audio Playing

  • Check that your iPhone's side switch or Focus mode isn't silencing media
  • Check the volume using the physical buttons or Control Center
  • If using Bluetooth, confirm your headphones or speaker are connected
  • Force-quit and reopen Hum

Playback Stopped Unexpectedly

Hum automatically pauses playback during phone calls or when a connected Bluetooth audio device disconnects. Reopen the app or use the lock screen controls to resume.

Subscription Not Recognized

  • Make sure you're signed in with the Apple ID used for the purchase
  • Open Settings within Hum and tap Restore Purchases
  • Go to Settings → App Store → tap your Apple ID → check subscriptions
  • If the issue persists, contact us (see below)

App Running Slowly or Crashing

  • Make sure you're running the latest version of Hum
  • Update to the latest version of iOS
  • Restart your iPhone

Contact Us

Need more help? Reach out to us:

wintongee@gmail.com

To help us resolve your issue quickly, please include:

  • Your iPhone model and iOS version
  • A description of the issue
  • Steps to reproduce the problem