# Planet Gravity vs Captain’s Log

The clearest difference is price: Captain’s Log at Free against Planet Gravity's $11.00. Captain’s Log also leads on rating (5.0 vs 4.2) and ads (none vs shown). Planet Gravity's advantage is ratings volume (54 vs 1) and iOS requirement (15.6 vs 17.0). On in-app purchases and device support there is nothing between them.

Captain’s Log is free to download; Planet Gravity costs $11.00 up front. Planet Gravity sells 1 one-off in-app purchase and Captain’s Log sells 6 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Captain’s Log holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Planet Gravity has 54 ratings behind it against 1, so its average is the more settled of the two.

Planet Gravity ships an update every 4 months, Captain’s Log monthly. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Planet Gravity | Captain’s Log |
| --- | --- | --- |
| Price | $11.00 | **Free** |
| Rating | [4.2 (54 ratings)](https://appshunter.io/ios/app/planet-gravity-simulateorbit/id1566504157/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/captains-log-stardate/id6755225372/reviews)** |
| Number of ratings | **54** | 1 |
| Positive reviews | 44.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 108 MB | 85 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oscar Tsang](https://appshunter.io/developer/416987065) | [Hakan Cevik](https://appshunter.io/developer/1852694895) |

## What reviewers say

### Planet Gravity

[App page](https://appshunter.io/ios/app/planet-gravity-simulateorbit/id1566504157)

Engage in a physics-based game simulating asteroid flight and solar system creation. Complete missions to explore the universe and pass the time. Discover other titles for freeform universe building.

**Highlights:** Physics-based gameplay, Asteroid simulation, Solar system creation, Level-based missions, Universe exploration

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Golden Pass | $2.99 | one-time |


### Captain’s Log

[App page](https://appshunter.io/ios/app/captains-log-stardate/id6755225372)

This app transforms your device into a futuristic command center for space exploration fans. It offers tools for date conversion, 3D starship viewing, personal logging, and engaging quizzes, all within a sci-fi interface. Enjoy offline access and customization for an immersive experience.

**Highlights:** Stardate Converter with custom epochs, 3D Starship Viewer with AR previews, Captain & Crew Profile creation, Personal Captain's Log with Markdown, Memory Card Simulator challenges, Dynamic Galactic Quiz, Daily Mission Engine for habit tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $4.99 | per month |
| Yearly Premium | $29.99 | per year |
| 80 Dilithium | $0.99 | one-time |
| 500 Dilithium | $2.99 | one-time |
| 1200 Dilithium | $3.99 | one-time |
| 2500 Dilithium | $7.99 | one-time |


## Frequently asked questions

### Is Planet Gravity free?

Planet Gravity costs $11.00, and also offers in-app purchases.

### Is Captain’s Log free?

Captain’s Log is free to download, with in-app purchases available.

### Which has better reviews, Planet Gravity or Captain’s Log?

Captain’s Log is rated higher. Planet Gravity averages 4.2 out of 5 from 54 ratings, while Captain’s Log averages 5.0 from 1 ratings.

### Do Planet Gravity or Captain’s Log have ads?

Planet Gravity shows ads; Captain’s Log does not.

### Which is updated more often, Planet Gravity or Captain’s Log?

Planet Gravity ships an update every 4 months, and Captain’s Log monthly. Most recently, Planet Gravity was updated on September 23, 2026 and Captain’s Log on September 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.*