Sundown vs VolumeGlass
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Sundown compared with VolumeGlass
| Detail | 
Sundown | 
VolumeGlass |
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| What it does | Block blue light and remove screen flicker on your Mac so you can feel better, think clearer and sleep deeper
| Elegant iOS-style volume control for macOS with glass design and quick actions
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Freemium
| Free trial
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| Pricing | Monthly $4.99/mo (after 7-day free trial), Annual $39/year (after 7-day free trial, saves 34% vs monthly), Lifetime $79 once (pay once, own forever, works on 2 computers)
| Free 3-day trial; $7.99 one-time lifetime license
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| Key features | - Filters blue light down to 500K deep red
- Removes screen flicker with Flicker-Free Mode
- Anti-Dithering to smooth visual display
- Automated scheduling with up to six time-based steps
- Seven presets plus custom schedule options
- Runs natively on Apple Silicon and Intel Macs
- No tracking or telemetry
- Supports macOS 12 Monterey through macOS 26 Tahoe
| - Hover-to-reveal interface that appears when cursor approaches screen edge
- Smooth drag-to-adjust functionality with haptic feedback
- Quick actions for mute, volume presets, and audio device switching
- Customizable from 5 different screen positions
- Automatic light and dark mode adaptation
- Multi-device audio output switching
- Native Swift performance with minimal CPU impact
- Only 10MB in size
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| What makes it different | - Reaches 500K deep red, far deeper than Night Shift's 2700K limit
- Only blue light app with Anti-Dithering for Apple Silicon Macs
- Harvard-backed science: blocks blue light that delays circadian clock by 3 hours
- Produces ~58% more melatonin and ~24 min longer sleep
- Gentle automated scheduling that eases changes gradually in background
| - iOS-style glass design elegance specifically for macOS
- Hover-to-reveal keeps desktop uncluttered and invisible when not needed
- Highly customizable with five screen position options
- Apple notarized with zero analytics or data collection
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 26 ▲ +2 (up) since last check | 4 ▼ −1 (down) since last check |
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| Trust Flow (Majestic) | 6 | 3 |
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| Citation Flow (Majestic) | 27 | 10 |
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| Referring domains (Majestic) | 35 | 10 |
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5 details filled in for both companies.
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