# Big Red Clock vs Ops Clock

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.

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 21, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Big Red Clock | Ops Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (183 ratings)](https://appshunter.io/ios/app/big-red-clock/id1056306447/reviews) | **[4.7 (11 ratings)](https://appshunter.io/ios/app/ops-clock/id1352786229/reviews)** |
| Number of ratings | **183** | 11 |
| Positive reviews | 77.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | Free | Free |
| Size | 15 MB | 2 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | **iPhone, iPad, Mac, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Single Sail Software, LLC](https://appshunter.io/developer/359715495) | [James Kretchmar](https://appshunter.io/developer/1352786228) |

## What reviewers say

### Big Red Clock

[App page](https://appshunter.io/ios/app/big-red-clock/id1056306447)

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.

**Highlights:** Large digital clock display, 12-hour and 24-hour formats, Countdown timer, Stopwatch functionality, Red color theme

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $5.99 | per year |


### Ops Clock

[App page](https://appshunter.io/ios/app/ops-clock/id1352786229)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Big Red Clock free?

Big Red Clock is free to download, with in-app purchases available.

### Is Ops Clock free?

Ops Clock is free to download, with no in-app purchases.

### Which has better reviews, Big Red Clock or Ops Clock?

Ops Clock is rated higher. Big Red Clock averages 4.6 out of 5 from 183 ratings, while Ops Clock averages 4.7 from 11 ratings.

### Do Big Red Clock or Ops Clock have ads?

Neither Big Red Clock nor Ops Clock shows ads.

### Which is updated more often, Big Red Clock or Ops Clock?

Big Red Clock ships an update every 2 weeks, and Ops Clock every 5 months. Most recently, Big Red Clock was updated on October 21, 2026 and Ops Clock on October 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*