# Thunderstorm Simulator vs Combat Clock 1a

The clearest difference is review sentiment: Thunderstorm Simulator at 100% against Combat Clock 1a's 56%. Thunderstorm Simulator also leads on rating (4.5 vs 3.9). Combat Clock 1a's advantage is ratings volume (69 vs 2) and update cadence (every 2 months vs every 4 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

Thunderstorm Simulator costs $1.99 and Combat Clock 1a $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Thunderstorm Simulator holds the better App Store score, 4.5 against 3.9. That said, the two scores are not equally well evidenced: Combat Clock 1a has 69 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Thunderstorm Simulator's written reviews are positive against 56% of Combat Clock 1a's.

Thunderstorm Simulator ships an update every 4 months, Combat Clock 1a every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Thunderstorm Simulator | Combat Clock 1a |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/thunderstorm-simulator/id1200949907/reviews)** | [3.9 (69 ratings)](https://appshunter.io/ios/app/combat-clock-1a/id1464746159/reviews) |
| Number of ratings | 2 | **69** |
| Positive reviews | **100.0% of reviews** | 56.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 72 MB | 10 MB |
| Requires iOS | 15.0.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Scott Dodson](https://appshunter.io/developer/1033778296) | [JOHN W GRANHOLM](https://appshunter.io/developer/1464746158) |

## What reviewers say

### Thunderstorm Simulator

[App page](https://appshunter.io/ios/app/thunderstorm-simulator/id1200949907)

Create a personalized thunderstorm experience with adjustable rain, thunder, and lightning effects. Customize sound volumes, lightning occurrences, and light colors to relax or fall asleep. Includes a sleep timer and options for background nature sounds.

**Highlights:** Adjustable rain sounds and volume, Customizable thunder and lightning occurrences, Screen or camera flash lightning effects, Background nature sounds, Sleep timer with fade-out, Keep Awake mode, Lightning on Demand control

**In-app purchases:** none


### Combat Clock 1a

[App page](https://appshunter.io/ios/app/combat-clock-1a/id1464746159)

This app replicates a 12-hour analog ship's clock, displaying GPS coordinates, heading, and compass bearing. It features an alarm that rings every half hour based on traditional deck watch shifts. The application is active only in the foreground and does not save or transmit any user data.

**Highlights:** 12-hour analog clock with sweeping second hand, Displays GPS coordinates, Shows device heading and compass bearing, Half-hourly alarm (1-8 bells), Foreground active only, No data saving or transmission

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Thunderstorm Simulator free?

Thunderstorm Simulator costs $1.99, with no in-app purchases.

### Is Combat Clock 1a free?

Combat Clock 1a costs $0.99, with no in-app purchases.

### Which has better reviews, Thunderstorm Simulator or Combat Clock 1a?

Thunderstorm Simulator is rated higher. Thunderstorm Simulator averages 4.5 out of 5 from 2 ratings, while Combat Clock 1a averages 3.9 from 69 ratings.

### Do Thunderstorm Simulator or Combat Clock 1a have ads?

Neither Thunderstorm Simulator nor Combat Clock 1a shows ads.

### Which is updated more often, Thunderstorm Simulator or Combat Clock 1a?

Thunderstorm Simulator ships an update every 4 months, and Combat Clock 1a every 2 months. Most recently, Thunderstorm Simulator was updated on November 6, 2026 and Combat Clock 1a on November 3, 2026.

---

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