big O'Clock vs Sleep Vibrations
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
big O'Clock
A full-screen clock, timer, and stopwatch app featuring large, clear digits. It offers high-quality visuals, sounds, and vibrations, serving as a stylish nightstand or work clock.
- Full-screen display
- Large, clear digits
- Customizable sounds and vibrations
- Timer functionality
- Stopwatch functionality
- Nightstand mode
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Big O'Clock is a clock, timer or stop watch with big digits in full screen with high quality images, sounds and vibrations Beautiful night stand or working clock
Sleep Vibrations
This Apple Watch app uses gentle, rhythmic vibrations to help you relax and fall asleep faster. It provides a silent, tactile anchor for your attention, guiding you away from racing thoughts without disturbing others or requiring headphones.
- Adjustable vibration timer
- Customizable vibration speed and style
- Pitch black, minimalist interface
- Completely silent, haptic-only operation
- Standalone Apple Watch functionality
- Battery efficient design
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Struggling to quiet your mind at night? Let your wrist lead the way to sleep. Sleep Vibrations is a standalone Apple Watch app designed to help you relax, decompress, and fall asleep faster using the power of haptic feedback. By utilizing the haptics in your Apple Watch, the app generates a soothing, rhythmic vibration that acts as a physical anchor for your attention, pulling you away from racing thoughts and into a state of deep relaxation. Whether you need to focus on your breath, calm anxiety, or simply need a gentle distraction to drift off, Sleep Vibrations provides a silent, non-intrusive solution. Why Use Haptics for Sleep? Unlike white noise apps or guided meditations that require headphones or audio, Sleep Vibrations is completely silent. It allows you to fall asleep without disturbing your partner, and without the need to wear uncomfortable earbuds in bed. It is a purely tactile experience designed to ground you in the present moment. Key Features: Adjustable Timer: Set your vibration session for up to 10 minutes, perfect for a quick wind-down routine. Speed and Style: Set your desired type of vibration and its speed. Pitch Black Design: A minimal, dark interface designed specifically for bedtime usage to reduce eye strain and blue light exposure. Completely Silent: Uses only vibration (haptics), making it perfect for shared beds or quiet environments. Standalone Experience: Runs entirely on your Apple Watch. No need to touch your iPhone and risk getting distracted by notifications. Battery Efficient: The session ends automatically when the timer runs out, ensuring your watch battery is preserved for morning tracking. How to Use: Open Sleep Vibrations on your Apple Watch while in bed. Set vibration type. Set desired speed. Select your desired duration (e.g., 5 or 10 minutes). Close your eyes, rest your hand comfortably, and focus on the rhythmic sensation on your wrist. Drift off to sleep. Download Sleep Vibrations tonight and feel the difference.
Screenshots
Verdict
The clearest difference is in-app purchases: Sleep Vibrations at none against big O'Clock's 3. Sleep Vibrations also leads on rating (5.0 vs 4.5) and update cadence (every 2 months vs every 12 months). big O'Clock's advantage is ratings volume (11 vs 1). On price, ads, monetization model and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
big O'Clock costs $0.99 and Sleep Vibrations $0.99 up front. big O'Clock sells 3 one-off in-app purchases. Sleep Vibrations asks for nothing beyond the download.
Sleep Vibrations holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: big O'Clock has 11 ratings behind it against 1, so its average is the more settled of the two.
big O'Clock ships an update every 12 months, Sleep Vibrations every 2 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | big O'Clock | Sleep Vibrations |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 4.5 (11 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 11 — better | 1 |
| Update frequency | Every 12 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Best chart rank | — | #53 — better |
| Devices | iPhone, iPad | iPhone, iPod, Apple Watch — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | john bogaert | Ian Akio Melo Shimabukuro |
Customer experience
big O'Clock
Sleep Vibrations
In-app purchases
big O'Clock
- I Love Big O'Clock$1.99
- I Deeply Love Big O'Clock$3.99
- I Adore Big O'Clock$6.99
Sleep Vibrations
No in-app purchases
Questions
Is big O'Clock free?
Is Sleep Vibrations free?
Which has better reviews, big O'Clock or Sleep Vibrations?
Do big O'Clock or Sleep Vibrations have ads?
Which is updated more often, big O'Clock or Sleep Vibrations?
Other comparisons
