# Combat Clock 2a vs Essential Sci

The clearest difference is price: Essential Sci at Free against Combat Clock 2a's $0.99. Combat Clock 2a's advantage is in-app purchases (none vs 2) and ads (none vs shown). On rating, ratings volume and device support there is nothing between them.

Essential Sci is free to download; Combat Clock 2a costs $0.99 up front. Essential Sci sells 2 in-app purchases, starting at $5.99 per month. Combat Clock 2a asks for nothing beyond the download.

Essential Sci holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 28 and 31 respectively.

Combat Clock 2a ships an update every 6 days, Essential Sci every 6 weeks. Both last shipped on September 17, 2026.

## The numbers

| Metric | Combat Clock 2a | Essential Sci |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.3 (28 ratings)](https://appshunter.io/ios/app/combat-clock-2a/id1471648729/reviews) | **[4.5 (31 ratings)](https://appshunter.io/ios/app/essential-sci-fi-channel/id1635437392/reviews)** |
| Number of ratings | 28 | **31** |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Every 6 weeks |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#170** | — |
| Size | 13 MB | 8 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple TV** |
| Age rating | 4+ | 12+ |
| Developer | [JOHN W GRANHOLM](https://appshunter.io/developer/1464746158) | [MacMillan Interactive Communications, LLC](https://appshunter.io/developer/820481297) |

## What reviewers say

### Combat Clock 2a

[App page](https://appshunter.io/ios/app/combat-clock-2a/id1471648729)

**Currently charting:** #170 Top Paid · Entertainment (US App Store)

This app replicates a 1957 Air Force 24-hour analog clock. It displays current GPS coordinates, heading, and compass bearing, indicating direction in portrait mode. The application is active only when in the foreground and does not save or transmit any personal data.

**Highlights:** 24-hour analog clock display, Sweeping second hand, GPS coordinate display, Heading and compass bearing, Portrait mode directional indicator, Foreground active only

**Features:** macOS Compatibility

**In-app purchases:** none


### Essential Sci

[App page](https://appshunter.io/ios/app/essential-sci-fi-channel/id1635437392)

Stream a vast library of science fiction movies and TV shows for free. Subscribe monthly to enjoy an ad-free viewing experience and access premium content.

**Highlights:** Hundreds of hours of sci-fi content, Free streaming, Monthly ad-free subscription, Watch on Apple TV, iPhone, iPad, iPod

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Essential Sci-Fi Subscription | $5.99 | per month |
| Essential Sci-Fi Yearly Sub | $69.99 | per year |


## Frequently asked questions

### Is Combat Clock 2a free?

Combat Clock 2a costs $0.99, with no in-app purchases.

### Is Essential Sci free?

Essential Sci is free to download, with in-app purchases available.

### Which has better reviews, Combat Clock 2a or Essential Sci?

Essential Sci is rated higher. Combat Clock 2a averages 4.3 out of 5 from 28 ratings, while Essential Sci averages 4.5 from 31 ratings.

### Do Combat Clock 2a or Essential Sci have ads?

Essential Sci shows ads; Combat Clock 2a does not.

### Which is updated more often, Combat Clock 2a or Essential Sci?

Combat Clock 2a ships an update every 6 days, and Essential Sci every 6 weeks. Most recently, Combat Clock 2a was updated on September 17, 2026 and Essential Sci on September 17, 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.*