Big Red Clock vs Ops Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Big Red Clock
This app provides a large, easily readable digital clock with both 12-hour and 24-hour formats. It also includes a countdown timer and a stopwatch function for various timekeeping needs.
- Large digital clock display
- 12-hour and 24-hour formats
- Countdown timer
- Stopwatch functionality
- Red color theme
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The perfect BIG NUMBER digital clock ...and red is just the beginning! Features: 12 hour or 24 hour Clock / Timer / Stopwatch Premium features (with subscription): Time Zone Assistant / Learn 24 Hour Time / Learn 12 Hour Time / Multi-Timer / Multi-Stopwatch Delightful set of colors and fonts to choose from Big Red Clock uses the standard Apple Terms of Use End User License Agreement (EULA): http://www.apple.com/legal/itunes/appstore/dev/stdeula
Ops Clock
A versatile utility app offering a world clock with over 400 cities, unlimited timers, and three powerful calculators for time zone, time, and date arithmetic. It also features an event log to track real-time occurrences and elapsed times.
- World clock with 400+ cities
- Unlimited count-up and countdown timers
- Time zone, time, and date calculators
- Event log with elapsed time tracking
- Customizable labels and notifications
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Professional grade clock and timer tool with four functions in one app: • World clock • Digital seconds display • Compact format • Over 400 cities • Set custom labels • Clocks sorted automatically • Unlimited number of timers • Count-up timers • Countdown timers • Wall clock timers • End-time notifications • Pre-notifications • Elapsed time and ETA in any zone • Three calculators • Time zone calculator helps plan multi-city conf calls • Time calculator for time arithmetic, including across different time zones • Date calculator for date arithmetic • Event Log • Stores a record of real-time events • Shows elapsed time between events This app is free, shows no advertisements, makes no use of the network and collects no personal information. Available in English, Spanish, French, Italian and Portuguese.
Screenshots
Verdict
The clearest difference is in-app purchases: Ops Clock at none against Big Red Clock's 2. Ops Clock also leads on review sentiment (100% vs 77%) and iOS requirement (15.0 vs 18.6). Big Red Clock's advantage is update cadence (every 2 weeks vs every 5 months) and ratings volume (183 vs 11). On price, rating, ads and monetization model 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
Both are free to download. Big Red Clock sells 2 in-app purchases, starting at $0.99 per month. Ops Clock asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.6 for Big Red Clock against 4.7 for Ops Clock. That said, the two scores are not equally well evidenced: Big Red Clock has 183 ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 77% of Big Red Clock's written reviews are positive against 100% of Ops Clock's.
Big Red Clock ships an update every 2 weeks, Ops Clock every 5 months. The most recent releases landed on October 18, 2026 and October 13, 2026 respectively.
| Parameter | Big Red Clock | Ops Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (183 ratings) | 4.7 (11 ratings) — better |
| Positive reviews | 77.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 183 — better | 11 |
| Update frequency | Every 2 weeks — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Mac, Apple TV — better | iPhone, iPad, iPod |
| Requires iOS | 18.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Single Sail Software, LLC | James Kretchmar |
Customer experience
Big Red Clock
Ops Clock
In-app purchases
Big Red Clock
- Monthly1 Month trial$0.991 Month
- Yearly1 Month trial$5.991 Year
Ops Clock
No in-app purchases
Questions
Is Big Red Clock free?
Is Ops Clock free?
Which has better reviews, Big Red Clock or Ops Clock?
Do Big Red Clock or Ops Clock have ads?
Which is updated more often, Big Red Clock or Ops Clock?
Other comparisons
