big O'Clock vs DotDecoClock
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
DotDecoClock
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DotDecoClock is a unique app that blends pixel-style design into both a clock and an interior decor piece. While decorating your room with pixel art, you can easily customize the display with simple controls, creating a design that is uniquely yours. Main Features: ・Pixel Art Design: Displays time in a retro pixel art style, functioning both as a clock and as a design element. DotDecoClock is a new type of app that combines a stylish interior design with the functionality of a digital clock. It adds a personal touch to your living space while bringing the joy of viewing time in a unique way. Image provided by : Unsplash（Arnel Hasanovic https://unsplash.com/arnelhasanovic, Alexandra Gorn https://unsplash.com/alexagorn, Roman Bozhko https://unsplash.com/romanbozhko）, rawpixel.com / Freepik
Screenshots
Verdict
The clearest difference is price: DotDecoClock at Free against big O'Clock's $0.99. DotDecoClock also leads on in-app purchases (none vs 3) and update cadence (monthly vs every 12 months). big O'Clock's advantage is ads (none vs shown). On 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
DotDecoClock is free to download; big O'Clock costs $0.99 up front. big O'Clock sells 3 one-off in-app purchases. DotDecoClock asks for nothing beyond the download.
big O'Clock ships an update every 12 months, DotDecoClock monthly. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.
| Parameter | big O'Clock | DotDecoClock |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.5 (11 ratings) — better | — |
| Number of ratings | 11 — better | — |
| Update frequency | Every 12 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 73 MB |
| Age rating | 4+ | 4+ |
| Developer | john bogaert | Haruya Ishiguro |
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
DotDecoClock
No in-app purchases
Questions
Is big O'Clock free?
Is DotDecoClock free?
Do big O'Clock or DotDecoClock have ads?
Which is updated more often, big O'Clock or DotDecoClock?
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